Commit Graph

5680 Commits

Author SHA1 Message Date
anand76 0fca5e31b4 Fix race between manifest error recovery and file ingestion (#12871)
Summary:
This PR fixes an assertion failure in `DBImpl::ResumeImpl` - `assert(!versions_->descriptor_log_)`. In `VersionSet`, `descriptor_log_` has a pointer to the current MANIFEST writer. When there's an error updating the manifest, `descriptor_log_` is reset, and the error recovery thread checks `io_status()` in `VersionSet` and attempts to write a new MANIFEST. If another DB manipulation happens at the same time (like external file ingestion, column family manipulation etc), it calls `LogAndApply`, which also attempts to write a new MANIFEST. The assertion in `ResumeImpl` might fail in this case since the other MANIFEST writer may have updated `descriptor_log_`. To prevent the assertion, this fix updates both `io_status_` and `descriptor_log_` while holding the DB mutex.

The other option would have been to simply remove the assert. But I think its important to have it to ensure the invariant that `io_status_` is cleared if the MANIFEST is written successfully, and this fix makes things easier to reason about.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12871

Test Plan: Existing tests and crash test

Reviewed By: hx235

Differential Revision: D59926947

Pulled By: anand1976

fbshipit-source-id: af9ad18da3e29fc62c7ec2e30e0738aa33d4e5f1
2024-07-19 10:37:51 -07:00
Peter Dillinger 93b163d1a2 Fix major bug with prefixes, SeekForPrev, and partitioned filters (#12872)
Summary:
Basically, the fix in https://github.com/facebook/rocksdb/issues/8137 was incomplete (and I missed it in the review), because if `whole_key_filtering` is false, then `last_prefix_str_` will never be set to non-empty and the fix doesn't work. Also related to https://github.com/facebook/rocksdb/issues/5835.

This is intended as a safe, simple fix that will regress CPU efficiency slightly (for `whole_key_filtering=false` cases, because of extra prefix string copies during flush & compaction). An efficient fix is not possible without some substantial refactoring.

Also in this PR: new test DBBloomFilterTest.FilterNumEntriesCoalesce tests an adjacent code path that was previously untested for its effect of ensuring the number of unique prefixes and keys is tracked properly when both prefixes and whole keys are going into a filter. (Test fails when either of the two code segments checking for duplicates is disabled.) In addition, the same test would fail before the main bug fix here because the code would inappropriately add the empty string to the filter (because of unmodified `last_prefix_str_`).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12872

Test Plan: In addition to DBBloomFilterTest.FilterNumEntriesCoalesce, extended DBBloomFilterTest.SeekForPrevWithPartitionedFilters to cover the broken case. (Mostly whitespace change.)

Reviewed By: jowlyzhang

Differential Revision: D59873793

Pulled By: pdillinger

fbshipit-source-id: 2a7b7f09ca73dc188fb4dab833826ad6da7ebb11
2024-07-17 14:08:35 -07:00
Hui Xiao 21db55f816 Move WAL sync before memtable insertion (#12869)
Summary:
**Context/Summary:**
WAL sync currently happens after memtable write. This causes inconvenience in stress test as we can't simply rollback the ExpectedState when write fails due to injected WAL sync error so something complicated like https://github.com/facebook/rocksdb/pull/12838 might be needed. After moving WAL sync before memtable insertion, there should not be injected IO error after memtable insertion so we can keep the current simple way of handling failed write in stress test with ExpectedState rollback.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12869

Test Plan:
1. Below command failed with `iterator has key 0000000000000207000000000000012B0000000000000013, but expected state does not.` before this PR and passes after
```
./db_stress  --WAL_size_limit_MB=0 --WAL_ttl_seconds=0 --acquire_snapshot_one_in=10000 --adaptive_readahead=1 --adm_policy=1 --advise_random_on_open=0 --allow_concurrent_memtable_write=0 --allow_data_in_errors=True --allow_fallocate=0 --async_io=0 --auto_readahead_size=0 --avoid_flush_during_recovery=0 --avoid_flush_during_shutdown=0 --avoid_unnecessary_blocking_io=0 --backup_max_size=104857600 --backup_one_in=0 --batch_protection_bytes_per_key=0 --bgerror_resume_retry_interval=1000000 --block_align=1 --block_protection_bytes_per_key=4 --block_size=16384 --bloom_before_level=4 --bloom_bits=56.810257702625165 --bottommost_compression_type=none --bottommost_file_compaction_delay=0 --bytes_per_sync=262144 --cache_index_and_filter_blocks=1 --cache_index_and_filter_blocks_with_high_priority=1 --cache_size=8388608 --cache_type=auto_hyper_clock_cache --charge_compression_dictionary_building_buffer=1 --charge_file_metadata=1 --charge_filter_construction=1 --charge_table_reader=0 --check_multiget_consistency=0 --check_multiget_entity_consistency=1 --checkpoint_one_in=10000 --checksum_type=kxxHash --clear_column_family_one_in=0 --column_families=1 --compact_files_one_in=1000 --compact_range_one_in=1000 --compaction_pri=4 --compaction_readahead_size=1048576 --compaction_ttl=10 --compress_format_version=1 --compressed_secondary_cache_ratio=0.0 --compressed_secondary_cache_size=0 --compression_checksum=0 --compression_max_dict_buffer_bytes=0 --compression_max_dict_bytes=0 --compression_parallel_threads=1 --compression_type=none --compression_use_zstd_dict_trainer=0 --compression_zstd_max_train_bytes=0 --continuous_verification_interval=0 --daily_offpeak_time_utc=04:00-08:00 --data_block_index_type=1 --db=/dev/shm/rocksdb_test/rocksdb_crashtest_blackbox --db_write_buffer_size=0 --default_temperature=kWarm --default_write_temperature=kCold --delete_obsolete_files_period_micros=30000000 --delpercent=0 --delrangepercent=0 --destroy_db_initially=0 --detect_filter_construct_corruption=0 --disable_file_deletions_one_in=10000 --disable_manual_compaction_one_in=1000000 --disable_wal=0 --dump_malloc_stats=0 --enable_checksum_handoff=1 --enable_compaction_filter=0 --enable_custom_split_merge=0 --enable_do_not_compress_roles=0 --enable_index_compression=1 --enable_memtable_insert_with_hint_prefix_extractor=0 --enable_pipelined_write=0 --enable_sst_partitioner_factory=0 --enable_thread_tracking=0 --enable_write_thread_adaptive_yield=0 --error_recovery_with_no_fault_injection=1 --exclude_wal_from_write_fault_injection=1 --expected_values_dir=/dev/shm/rocksdb_test/rocksdb_crashtest_expected --fail_if_options_file_error=1 --fifo_allow_compaction=0 --file_checksum_impl=crc32c --fill_cache=1 --flush_one_in=1000000 --format_version=3 --get_all_column_family_metadata_one_in=1000000 --get_current_wal_file_one_in=0 --get_live_files_apis_one_in=1000000 --get_properties_of_all_tables_one_in=1000000 --get_property_one_in=100000 --get_sorted_wal_files_one_in=0 --hard_pending_compaction_bytes_limit=274877906944 --high_pri_pool_ratio=0.5 --index_block_restart_interval=4 --index_shortening=2 --index_type=0 --ingest_external_file_one_in=0 --initial_auto_readahead_size=16384 --inplace_update_support=0 --iterpercent=50 --key_len_percent_dist=1,30,69 --key_may_exist_one_in=100 --last_level_temperature=kWarm --level_compaction_dynamic_level_bytes=1 --lock_wal_one_in=10000 --log_file_time_to_roll=60 --log_readahead_size=16777216 --long_running_snapshots=1 --low_pri_pool_ratio=0 --lowest_used_cache_tier=0 --manifest_preallocation_size=0 --manual_wal_flush_one_in=0 --mark_for_compaction_one_file_in=10 --max_auto_readahead_size=16384 --max_background_compactions=1 --max_bytes_for_level_base=67108864 --max_key=100000 --max_key_len=3 --max_log_file_size=1048576 --max_manifest_file_size=32768 --max_sequential_skip_in_iterations=1 --max_total_wal_size=0 --max_write_batch_group_size_bytes=16 --max_write_buffer_number=10 --max_write_buffer_size_to_maintain=8388608 --memtable_insert_hint_per_batch=1 --memtable_max_range_deletions=0 --memtable_prefix_bloom_size_ratio=0.01 --memtable_protection_bytes_per_key=1 --memtable_whole_key_filtering=1 --memtablerep=skip_list --metadata_charge_policy=1 --metadata_read_fault_one_in=32 --metadata_write_fault_one_in=0 --min_write_buffer_number_to_merge=1 --mmap_read=1 --mock_direct_io=False --nooverwritepercent=1 --num_file_reads_for_auto_readahead=1 --open_files=-1 --open_metadata_read_fault_one_in=0 --open_metadata_write_fault_one_in=0 --open_read_fault_one_in=0 --open_write_fault_one_in=0 --ops_per_thread=100000000 --optimize_filters_for_hits=1 --optimize_filters_for_memory=1 --optimize_multiget_for_io=1 --paranoid_file_checks=0 --partition_filters=0 --partition_pinning=3 --pause_background_one_in=1000000 --periodic_compaction_seconds=2 --prefix_size=7 --prefixpercent=0 --prepopulate_block_cache=0 --preserve_internal_time_seconds=0 --progress_reports=0 --promote_l0_one_in=0 --read_amp_bytes_per_bit=0 --read_fault_one_in=1000 --readahead_size=524288 --readpercent=0 --recycle_log_file_num=1 --reopen=0 --report_bg_io_stats=0 --reset_stats_one_in=1000000 --sample_for_compression=0 --secondary_cache_fault_one_in=0 --set_options_one_in=0 --skip_stats_update_on_db_open=1 --snapshot_hold_ops=100000 --soft_pending_compaction_bytes_limit=68719476736 --sqfc_name=foo --sqfc_version=0 --sst_file_manager_bytes_per_sec=104857600 --sst_file_manager_bytes_per_truncate=0 --stats_dump_period_sec=10 --stats_history_buffer_size=0 --strict_bytes_per_sync=1 --subcompactions=4 --sync=1 --sync_fault_injection=0 --table_cache_numshardbits=6 --target_file_size_base=16777216 --target_file_size_multiplier=1 --test_batches_snapshots=0 --top_level_index_pinning=2 --uncache_aggressiveness=239 --universal_max_read_amp=-1 --unpartitioned_pinning=1 --use_adaptive_mutex=1 --use_adaptive_mutex_lru=1 --use_attribute_group=0 --use_delta_encoding=0 --use_direct_io_for_flush_and_compaction=0 --use_direct_reads=0 --use_full_merge_v1=0 --use_get_entity=0 --use_merge=0 --use_multi_cf_iterator=0 --use_multi_get_entity=0 --use_multiget=0 --use_put_entity_one_in=0 --use_sqfc_for_range_queries=1 --use_timed_put_one_in=0 --use_write_buffer_manager=0 --user_timestamp_size=0 --value_size_mult=32 --verification_only=0 --verify_checksum=1 --verify_checksum_one_in=1000000 --verify_compression=0 --verify_db_one_in=100000 --verify_file_checksums_one_in=1000000 --verify_iterator_with_expected_state_one_in=5 --verify_sst_unique_id_in_manifest=1 --wal_bytes_per_sync=0 --wal_compression=none --write_buffer_size=33554432 --write_dbid_to_manifest=0 --write_fault_one_in=128 --writepercent=50

Reviewed By: jowlyzhang

Differential Revision: D59825730

Pulled By: hx235

fbshipit-source-id: 7d77aaf177ded2f99bf1ce19f5a4bd0783b9ca92
2024-07-17 13:39:14 -07:00
Hui Xiao 9e4ee7f0c6 Fix non-okay status being ignored in write path under two_write_queues_ (#12866)
Summary:
Context/Summary: see above, though the impact is small.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12866

Test Plan: exiting UT

Reviewed By: anand1976

Differential Revision: D59782913

Pulled By: hx235

fbshipit-source-id: ec02843645cce49466bde602035d2e61c31965b8
2024-07-16 10:55:08 -07:00
anand76 5aa675457e Fix unhandled MANIFEST write errors (#12865)
Summary:
The failure of `WriteCurrentStateToManifest()` in `VersionSet::ProcessManifestWrites()` was not handled properly. If it failed, `manifest_io_status` was not updated, leading to `manifest_file_number_` being updated to the newly created manifest even though its bad. This would lead to the bad manifest immediately getting deleted, and also the good manifest (referenced by `CURRENT`) getting deleted by obsolete file deletion because of `manifest_file_number_` not referencing its number.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12865

Reviewed By: hx235

Differential Revision: D59782940

Pulled By: anand1976

fbshipit-source-id: f752fb9a1c23fd3d734616e273613cbac204301b
2024-07-15 19:13:29 -07:00
Hui Xiao 4ff35afb42 Fix a bug where `OnErrorRecoveryBegin()` is not called before auto-recovery (#12860)
Summary:
**Context/Summary:**
`*auto_recovery` needs to be set true in order for `OnErrorRecoveryBegin()` to be called before auto-recovery
3db030d7ee/db/event_helpers.cc (L64-L66)
Currently it's set false for auto-recovery. This PR fixes it.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12860

Test Plan:
- Manual observation that it is called
- Existing UT

Reviewed By: jowlyzhang

Differential Revision: D59693315

Pulled By: hx235

fbshipit-source-id: 3f428c5b1e9818bb7697fdcd7f245d11378eb14a
2024-07-15 17:00:14 -07:00
WangQian 755010f8d3 Fix the bug with using the user comparator to compare prefix. (#12862)
Summary:
Fixes https://github.com/facebook/rocksdb/issues/12855

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12862

Reviewed By: cbi42

Differential Revision: D59771651

Pulled By: jowlyzhang

fbshipit-source-id: ffe0025143f51f9ce1b46900c3fef6a20eb34f4a
2024-07-15 15:13:29 -07:00
Peter Dillinger 0e3e43f4d1 FaultInjectionTestFS follow-up and clean-up (#12861)
Summary:
In follow-up to https://github.com/facebook/rocksdb/issues/12852:
* Use std::copy in place of copy_n for potentially overlapping buffer
* Get rid of troublesome -1 idiom from `pos_at_last_append_` and `pos_at_last_sync_`
* Small improvements to test FaultInjectionFSTest.ReadUnsyncedData

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12861

Test Plan: CI, crash test, etc.

Reviewed By: cbi42

Differential Revision: D59757484

Pulled By: pdillinger

fbshipit-source-id: c6fbdc2e97c959983184925a855cc8b0285fa23f
2024-07-15 10:28:34 -07:00
Peter Dillinger 72438a6788 Support read & write with unsynced data in FaultInjectionTestFS (#12852)
Summary:
Follow-up to https://github.com/facebook/rocksdb/issues/12729 and others to fix FaultInjectionTestFS handling the case where a live WAL is being appended to and synced while also being copied for checkpoint or backup, up to a known flushed (but not necessarily synced) prefix of the file. It was tricky to structure the code in a way that could handle a tricky race with Sync in another thread (see code comments, thanks Changyu) while maintaining good performance and test-ability.

For more context, see the call to FlushWAL() in DBImpl::GetLiveFilesStorageInfo().

Also, the unit test for https://github.com/facebook/rocksdb/issues/12729 was neutered by https://github.com/facebook/rocksdb/issues/12797, and this re-enables the functionality it is testing.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12852

Test Plan:
unit test expanded/updated. Local runs of blackbox_crash_test.

The implementation is structured so that a multi-threaded unit test is not needed to cover at least the code lines, as the race handling is folded into "catch up after returning unsynced and then a sync."

Reviewed By: cbi42

Differential Revision: D59594045

Pulled By: pdillinger

fbshipit-source-id: 94667bb72255e2952586c53bae2c2dd384e85a50
2024-07-12 16:01:57 -07:00
Konstantin Ilin 5ecb92760a Create C API function to iterate over WriteBatch for custom Column Families (#12718)
Summary:
Create C API function for iterating over WriteBatch for custom Column Families
Adding function to C API that exposes column family specific methods to iterate over WriteBatch: put_cf, delete_cf and merge_cf. This is required when the one needs to read changes for any non-default column family. Without that functionality it is impossible to iterate over changes in WAL that are relevant to custom column families.

Fixes https://github.com/facebook/rocksdb/issues/12790

Testing:
Added WriteBatch iteration test to "columnfamilies" section of C API unit tests

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12718

Reviewed By: cbi42

Differential Revision: D59483601

Pulled By: ajkr

fbshipit-source-id: b68b900636304528a38620a8c3ad82fdce4b60cb
2024-07-09 12:05:08 -07:00
w41ter b837d41ab1 Expose SizeApproximationFlags to C API (#12836)
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/12836

Reviewed By: cbi42

Differential Revision: D59502673

Pulled By: ajkr

fbshipit-source-id: fc9f77d6740d8efa45d9357662f0f827dbd0511f
2024-07-09 12:00:50 -07:00
Chdy 110ce5f4a3 fix: Round-Robin pri under leveled compaction allows subcompactions b… (#12843)
Summary:
### Summary: Round-Robin pri under leveled compaction allows subcompactions by default is not compatible with PlainTable

```c++
bool Compaction::ShouldFormSubcompactions() const {
  if (cfd_ == nullptr) {
    return false;
  }

  // Round-Robin pri under leveled compaction allows subcompactions by default
  // and the number of subcompactions can be larger than max_subcompactions_
  if (cfd_->ioptions()->compaction_pri == kRoundRobin &&
      cfd_->ioptions()->compaction_style == kCompactionStyleLevel) {
    return output_level_ > 0;
  }

  if (max_subcompactions_ <= 1) {
    return false;
  }
```

PlainTable does not support Subcompaction, including when AdaptiveTable is applied to PlainTable.  subcompaction by default will result in the following error in some scenarios.

```c++
void PlainTableIterator::Seek(const Slice& target) {
  if (use_prefix_seek_ != !table_->IsTotalOrderMode()) {
    // This check is done here instead of NewIterator() to permit creating an
    // iterator with total_order_seek = true even if we won't be able to Seek()
    // it. This is needed for compaction: it creates iterator with
    // total_order_seek = true but usually never does Seek() on it,
    // only SeekToFirst().
    status_ = Status::InvalidArgument(
        "total_order_seek not implemented for PlainTable.");
    offset_ = next_offset_ = table_->file_info_.data_end_offset;
    return;
  }
```

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12843

Reviewed By: ajkr

Differential Revision: D59433477

Pulled By: cbi42

fbshipit-source-id: fb780ba7f7e8efdfedb7480abf14dd38e0b63677
2024-07-08 12:25:11 -07:00
Peter Dillinger 0bb939611d Avoid unnecessary work in internal calls to GetSortedWalFiles (#12831)
Summary:
We are seeing a number of crash test failures coming from checkpoint and backup code, likely from WalManager::GetSortedWalFiles -> ... -> WalManager::ReadFirstLine and this code path is not needed, because we don't need to know the sequence numbers of WAL files going into a checkpoint or backup. We can minimize the impact of whatever inconsistency is causing that problem by not relying on it where it's not needed.

Similarly, when we only need a roughly accurate set of current WAL files, we don't need to query all the archived WAL files (and redundantly the live ones again).

So this reduces filesystem queries and DB mutex acquires in creating backups and checkpoints.

Needed follow-up:
Figure out what is causing various failures with an apparent inconsistency where GetSortedWalFiles fails on reading a WAL file. If it's an injected failure, perhaps it's not propagating that injected failure appropriately. It might also be an inconsistency between what the DB knows is flushed and what WalManager reads from the filesystem (which we know is dubious and should be phased out, which this is arguably another step toward). Or completing that phase-out might solve the problem without a full diagnosis.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12831

Test Plan:
existing tests (easily caught when I went too far in initally developing this change)

Update to BackupUsingDirectIO test so that there's a WAL file in what is backed up. (Was relying on some oddity.)

Reviewed By: cbi42

Differential Revision: D59252649

Pulled By: pdillinger

fbshipit-source-id: 7ad4187a1c70caa59a6d6c1c643ef95232b929f5
2024-07-01 23:29:02 -07:00
Jeffery 093f4ef82c Fix db_rate_limiter_test for win (#12816)
Summary:
We didn't implement file system prefetch for OS Win. During table open, it uses `FilePrefetchBuffer` instead and only do 1 read instead of 4 in BufferedIO.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12816

Reviewed By: jaykorean

Differential Revision: D59181835

Pulled By: ajkr

fbshipit-source-id: 18b8f0247408cd1a80f289357ede5232ae5a3c66
2024-07-01 16:14:19 -07:00
HypenZou 5bb7f95ed6 Don't take archived log size into account when calculating log size for flush (#12680)
Summary:
**Context/Summary:**
It seems unreasonable to take the archived log size into account when calculating log size **for flush** in method CreateCheckpoint. If the user sets WAL_ttl_seconds or WAL_size_limit_MB, the argument _log_size_for_flush_ can easily be reached due to the size of the archived dir. As a result, the flush may always be triggered.
**Test**
corverd by ./checkpoint_test

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12680

Reviewed By: jaykorean

Differential Revision: D59097904

Pulled By: ajkr

fbshipit-source-id: 0ed29c1b078d8f40b85288541b008e00dbc517d3
2024-06-28 11:56:26 -07:00
Changyu Bi a31fe52173 Remove the return value of `SetBGError()` (#12792)
Summary:
the return value for `ErrorHandler::SetBGError(error)` seems to be not well-defined, it can be `bg_error_` (no matter if the `bg_error_` is set to the input error), ok status or [`recovery_error_`](3ee4d5a11a/db/error_handler.cc (L669)) from `StartRecoverFromRetryableBGIOError()`.  The `recovery_error_` returned may be an OK status.

We have only a few places that use the return value of  `SetBGError()` and they don't need to do so. Using the return value may even be wrong for example in 3ee4d5a11a/db/db_impl/db_impl_write.cc (L2365) where a non-ok `s` could be overwritten to OK. This PR changes SetBGError() to return void and clean up relevant code.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12792

Test Plan: existing unit tests and go over all places where return value of `SetBGError()` is used.

Reviewed By: hx235

Differential Revision: D58904898

Pulled By: cbi42

fbshipit-source-id: d58a20ba5a40e3f35367c6034a32c755088c3653
2024-06-26 18:17:05 -07:00
Jason Volk 8bf1f6f87f Add info logging via callback to C api. (#12537)
Summary:
I'd like to get this in so the Rust folks can integrate with their splendid logging/tracing frameworks; will be hugely appreciated. 🙏🏻
The infolog capabilities for C embeddings are quite spartan. LOG files were generated involuntarily until redirection to stderr was added by https://github.com/facebook/rocksdb/issues/12262; still insufficient for apps which cannot tolerate pollution of their stdio and tend to have existing logging frameworks to tie into for that.

Adds a very minimal derive of Logger around a C callback, written in the spirit, useful for FFI interfaces from other languages to integrate infolog.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12537

Reviewed By: ajkr

Differential Revision: D57597766

Pulled By: cbi42

fbshipit-source-id: ec684ce4ddf77a0a6ebbf013a1bacb4ff2e49eb0
2024-06-26 10:29:05 -07:00
Peter Dillinger 39455974cb Fix possible double-free on TruncatedRangeDelIterator (#12805)
Summary:
Not sure where or how it happens, but using a recent CircleCI failure I got a reliable db_stress reproducer.

Using std::unique_ptr appropriately for managing them has apparently (and unsurprisingly) fixed the problem without needing to know exactly where the problem was.

Suggested follow-up:
* Three or even four levels of pointers is very confusing to work with. Surely this part can be cleaned up to be simpler.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12805

Test Plan:
Reproducer passes, plus ASAN test and crash test runs. I don't think it's worth the extra work to track down the details and create a careful unit test.

```
./db_stress --WAL_size_limit_MB=1 --WAL_ttl_seconds=60 --acquire_snapshot_one_in=10000 --adaptive_readahead=1 --adm_policy=2 --advise_random_on_open=1 --allow_data_in_errors=True --allow_fallocate=1 --async_io=0 --auto_readahead_size=1 --avoid_flush_during_recovery=0 --avoid_flush_during_shutdown=1 --avoid_unnecessary_blocking_io=1 --backup_max_size=104857600 --backup_one_in=100000 --batch_protection_bytes_per_key=0 --bgerror_resume_retry_interval=1000000 --block_align=1 --block_protection_bytes_per_key=4 --block_size=16384 --bloom_before_level=2147483646 --bloom_bits=15 --bottommost_compression_type=none --bottommost_file_compaction_delay=3600 --bytes_per_sync=262144 --cache_index_and_filter_blocks=0 --cache_index_and_filter_blocks_with_high_priority=0 --cache_size=33554432 --cache_type=tiered_lru_cache --charge_compression_dictionary_building_buffer=0 --charge_file_metadata=1 --charge_filter_construction=0 --charge_table_reader=0 --check_multiget_consistency=1 --check_multiget_entity_consistency=1 --checkpoint_one_in=10000 --checksum_type=kxxHash --clear_column_family_one_in=0 --compact_files_one_in=1000000 --compact_range_one_in=1000 --compaction_pri=0 --compaction_readahead_size=0 --compaction_ttl=0 --compress_format_version=2 --compressed_secondary_cache_ratio=0.2 --compressed_secondary_cache_size=0 --compression_checksum=0 --compression_max_dict_buffer_bytes=0 --compression_max_dict_bytes=0 --compression_parallel_threads=1 --compression_type=none --compression_use_zstd_dict_trainer=0 --compression_zstd_max_train_bytes=0 --continuous_verification_interval=0 --daily_offpeak_time_utc= --data_block_index_type=0 --db=/dev/shm/rocksdb.gpxs/rocksdb_crashtest_blackbox --db_write_buffer_size=0 --default_temperature=kWarm --default_write_temperature=kCold --delete_obsolete_files_period_micros=21600000000 --delpercent=4 --delrangepercent=1 --destroy_db_initially=0 --detect_filter_construct_corruption=0 --disable_file_deletions_one_in=10000 --disable_manual_compaction_one_in=1000000 --disable_wal=0 --dump_malloc_stats=1 --enable_checksum_handoff=1 --enable_compaction_filter=0 --enable_custom_split_merge=0 --enable_do_not_compress_roles=0 --enable_index_compression=0 --enable_memtable_insert_with_hint_prefix_extractor=0 --enable_pipelined_write=1 --enable_sst_partitioner_factory=0 --enable_thread_tracking=1 --enable_write_thread_adaptive_yield=0 --error_recovery_with_no_fault_injection=0 --expected_values_dir=/dev/shm/rocksdb.gpxs/rocksdb_crashtest_expected --fail_if_options_file_error=0 --fifo_allow_compaction=0 --file_checksum_impl=none --fill_cache=1 --flush_one_in=1000000 --format_version=3 --get_all_column_family_metadata_one_in=1000000 --get_current_wal_file_one_in=0 --get_live_files_apis_one_in=10000 --get_properties_of_all_tables_one_in=100000 --get_property_one_in=100000 --get_sorted_wal_files_one_in=0 --hard_pending_compaction_bytes_limit=274877906944 --high_pri_pool_ratio=0 --index_block_restart_interval=4 --index_shortening=0 --index_type=0 --ingest_external_file_one_in=0 --initial_auto_readahead_size=16384 --inplace_update_support=0 --iterpercent=10 --key_len_percent_dist=1,30,69 --key_may_exist_one_in=100 --last_level_temperature=kHot --level_compaction_dynamic_level_bytes=0 --lock_wal_one_in=1000000 --log_file_time_to_roll=0 --log_readahead_size=0 --long_running_snapshots=1 --low_pri_pool_ratio=0 --lowest_used_cache_tier=2 --manifest_preallocation_size=5120 --manual_wal_flush_one_in=1000 --mark_for_compaction_one_file_in=10 --max_auto_readahead_size=16384 --max_background_compactions=20 --max_bytes_for_level_base=10485760 --max_key=2500000 --max_key_len=3 --max_log_file_size=0 --max_manifest_file_size=1073741824 --max_sequential_skip_in_iterations=1 --max_total_wal_size=0 --max_write_batch_group_size_bytes=16 --max_write_buffer_number=3 --max_write_buffer_size_to_maintain=0 --memtable_insert_hint_per_batch=1 --memtable_max_range_deletions=100 --memtable_prefix_bloom_size_ratio=0 --memtable_protection_bytes_per_key=4 --memtable_whole_key_filtering=0 --memtablerep=skip_list --metadata_charge_policy=0 --metadata_read_fault_one_in=32 --metadata_write_fault_one_in=0 --min_write_buffer_number_to_merge=2 --mmap_read=1 --mock_direct_io=False --nooverwritepercent=1 --num_file_reads_for_auto_readahead=0 --open_files=100 --open_metadata_read_fault_one_in=0 --open_metadata_write_fault_one_in=8 --open_read_fault_one_in=0 --open_write_fault_one_in=16 --ops_per_thread=100000000 --optimize_filters_for_hits=1 --optimize_filters_for_memory=0 --optimize_multiget_for_io=1 --paranoid_file_checks=1 --partition_filters=0 --partition_pinning=1 --pause_background_one_in=1000000 --periodic_compaction_seconds=0 --prefix_size=-1 --prefixpercent=0 --prepopulate_block_cache=1 --preserve_internal_time_seconds=60 --progress_reports=0 --promote_l0_one_in=0 --read_amp_bytes_per_bit=0 --read_fault_one_in=32 --readahead_size=524288 --readpercent=50 --recycle_log_file_num=1 --reopen=0 --report_bg_io_stats=1 --reset_stats_one_in=10000 --sample_for_compression=5 --secondary_cache_fault_one_in=32 --secondary_cache_uri= --set_options_one_in=10000 --skip_stats_update_on_db_open=0 --snapshot_hold_ops=100000 --soft_pending_compaction_bytes_limit=68719476736 --sqfc_name=bar --sqfc_version=1 --sst_file_manager_bytes_per_sec=104857600 --sst_file_manager_bytes_per_truncate=0 --stats_dump_period_sec=0 --stats_history_buffer_size=1048576 --strict_bytes_per_sync=1 --subcompactions=3 --sync=0 --sync_fault_injection=1 --table_cache_numshardbits=0 --target_file_size_base=524288 --target_file_size_multiplier=2 --test_batches_snapshots=0 --test_cf_consistency=1 --top_level_index_pinning=1 --uncache_aggressiveness=5 --universal_max_read_amp=-1 --unpartitioned_pinning=2 --use_adaptive_mutex=0 --use_adaptive_mutex_lru=0 --use_attribute_group=1 --use_delta_encoding=1 --use_direct_io_for_flush_and_compaction=0 --use_direct_reads=0 --use_full_merge_v1=0 --use_get_entity=0 --use_merge=0 --use_multi_cf_iterator=0 --use_multi_get_entity=0 --use_multiget=1 --use_put_entity_one_in=1 --use_sqfc_for_range_queries=1 --use_timed_put_one_in=0 --use_write_buffer_manager=0 --user_timestamp_size=0 --value_size_mult=32 --verification_only=0 --verify_checksum=1 --verify_checksum_one_in=1000000 --verify_compression=1 --verify_db_one_in=100000 --verify_file_checksums_one_in=0 --verify_iterator_with_expected_state_one_in=0 --verify_sst_unique_id_in_manifest=1 --wal_bytes_per_sync=0 --wal_compression=none --write_buffer_size=1048576 --write_dbid_to_manifest=1 --write_fault_one_in=0 --writepercent=35
```

Reviewed By: cbi42

Differential Revision: D58958390

Pulled By: pdillinger

fbshipit-source-id: 1271cfdcc3c574f78cd59f3c68148f7ed4a19c47
2024-06-24 11:51:16 -07:00
Yu Zhang fa4ffc816c Fix race condition between event listener and error handler (#12803)
Summary:
Fix a race for accessing `bg_error_` after mutex is released. We make some copies before releasing to avoid this.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12803

Reviewed By: cbi42

Differential Revision: D58957557

Pulled By: jowlyzhang

fbshipit-source-id: 3c7369a3b8c8707aebc0044ff98288c898c05cb8
2024-06-24 11:45:28 -07:00
Hui Xiao 9d64ca55b7 Proceed for new memtable on okay status (#12798)
Summary:
**Context/Summary:**
The relevant code logs info of newly created WAL and proceeds to "ConstructFragmentedRangeTombstones()" even when the previous step fails. This PR fixes it.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12798

Test Plan: Existing tests

Reviewed By: cbi42

Differential Revision: D58917246

Pulled By: hx235

fbshipit-source-id: f395210d91e50617195cb9a8047cf5d82db0c40e
2024-06-22 16:17:59 -07:00
Changyu Bi b4a84efb4e Fix assertion failure in ConstructFragmentedRangeTombstones() (#12796)
Summary:
the assertion `assert(!IsFragmentedRangeTombstonesConstructed(false));` assumes ConstructFragmentedRangeTombstones() is called only once for a memtable. This is not true since SwitchMemtable() can be called multiple times on the same live memtable, if a previous attempt fails. So remove the assertion in this PR and simplify relevant code.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12796

Test Plan: the exact condition to trigger manifest write in SwitchMemtable() is complicated. Will monitor crash test to see if there's no more failure.

Reviewed By: hx235

Differential Revision: D58913310

Pulled By: cbi42

fbshipit-source-id: 458bb9eebcf6743e9001186fcb757e4b50e8a5d2
2024-06-22 11:31:16 -07:00
Peter Dillinger 3ee4d5a11a Fix possible crash in failure to sync some WALs (#12789)
Summary:
I believe this was possible with recyclable logs before recent work like https://github.com/facebook/rocksdb/issues/12734, but this cleans up a couple of possible crashes revealed by the crash test.  A WAL with a nullptr file writer (already closed) can persist in `logs_` if a later WAL fails to sync. In case of any WAL sync failures, we don't record WAL syncs to the manifest. Thus, even if a WAL is fully synced and closed, we might need to keep it on the `logs_` list so that we know to record its sync to the manifest if there should be a successful sync next time. (However, I believe that's future-looking because currently any failure in WAL sync is considered non-recoverable.)

I don't believe this was likely enough before recent changes to warrant a release note (if it was possible).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12789

Test Plan: A unit test that would reveal the crashes, now fixed

Reviewed By: cbi42

Differential Revision: D58874154

Pulled By: pdillinger

fbshipit-source-id: bc69407cd9cbcd080af9585d502d4e33dafc3d29
2024-06-21 12:56:21 -07:00
Jay Huh cce51f0664 Fix heap-use-after-free in MultiCfIteratorImpl (#12784)
Summary:
# Summary

When changing the direction of the multi-cf-iter, we do this by `Seek(current_key)` (if changing from backward to forward) or `SeekForPrev(current_key)` (if forward -> backward) in the child iters and rebuild the heap.

`Slice target` is just a pointer and contents are not guaranteed to be the same after re-init the heap.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12784

Test Plan:
I was able to steadily repro by building with `COMPILE_WITH_ASAN=1` running db_stress.
```
COMPILE_WITH_ASAN=1 make -j64 dbg
```
```
./db_stress --WAL_size_limit_MB=1 --WAL_ttl_seconds=60 --acquire_snapshot_one_in=10000 --adaptive_readahead=0 --adm_policy=2 --advise_random_on_open=1 --allow_data_in_errors=True --allow_fallocate=0 --async_io=0 --auto_readahead_size=1 --avoid_flush_during_recovery=0 --avoid_flush_during_shutdown=1 --avoid_unnecessary_blocking_io=1 --backup_max_size=104857600 --backup_one_in=1000 --batch_protection_bytes_per_key=0 --bgerror_resume_retry_interval=100 --block_align=1 --block_protection_bytes_per_key=8 --block_size=16384 --bloom_before_level=2147483646 --bloom_bits=62.9095874568401 --bottommost_compression_type=none --bottommost_file_compaction_delay=600 --bytes_per_sync=0 --cache_index_and_filter_blocks=0 --cache_index_and_filter_blocks_with_high_priority=0 --cache_size=33554432 --cache_type=lru_cache --charge_compression_dictionary_building_buffer=0 --charge_file_metadata=1 --charge_filter_construction=1 --charge_table_reader=0 --check_multiget_consistency=0 --check_multiget_entity_consistency=0 --checkpoint_one_in=10000 --checksum_type=kxxHash64 --clear_column_family_one_in=0 --compact_files_one_in=1000000 --compact_range_one_in=1000000 --compaction_pri=1 --compaction_readahead_size=0 --compaction_ttl=100 --compress_format_version=2 --compressed_secondary_cache_size=8388608 --compression_checksum=1 --compression_max_dict_buffer_bytes=1099511627775 --compression_max_dict_bytes=16384 --compression_parallel_threads=1 --compression_type=none --compression_use_zstd_dict_trainer=1 --compression_zstd_max_train_bytes=0 --continuous_verification_interval=0 --daily_offpeak_time_utc= --data_block_index_type=1 --db=/dev/shm/rocksdb_test/rocksdb_crashtest_whitebox --db_write_buffer_size=0 --default_temperature=kUnknown --default_write_temperature=kWarm --delete_obsolete_files_period_micros=21600000000 --delpercent=4 --delrangepercent=1 --destroy_db_initially=0 --detect_filter_construct_corruption=1 --disable_file_deletions_one_in=1000000 --disable_manual_compaction_one_in=10000 --disable_wal=0 --dump_malloc_stats=1 --enable_checksum_handoff=0 --enable_compaction_filter=0 --enable_custom_split_merge=1 --enable_do_not_compress_roles=0 --enable_index_compression=0 --enable_memtable_insert_with_hint_prefix_extractor=0 --enable_pipelined_write=1 --enable_sst_partitioner_factory=1 --enable_thread_tracking=1 --enable_write_thread_adaptive_yield=1 --error_recovery_with_no_fault_injection=0 --expected_values_dir=/dev/shm/rocksdb_test/rocksdb_crashtest_expected --fail_if_options_file_error=0 --fifo_allow_compaction=1 --file_checksum_impl=crc32c --fill_cache=0 --flush_one_in=1000000 --format_version=4 --get_all_column_family_metadata_one_in=1000000 --get_current_wal_file_one_in=0 --get_live_files_apis_one_in=10000 --get_properties_of_all_tables_one_in=1000000 --get_property_one_in=1000000 --get_sorted_wal_files_one_in=0 --hard_pending_compaction_bytes_limit=274877906944 --high_pri_pool_ratio=0 --index_block_restart_interval=4 --index_shortening=1 --index_type=0 --ingest_external_file_one_in=0 --initial_auto_readahead_size=524288 --inplace_update_support=0 --iterpercent=10 --key_len_percent_dist=1,30,69 --key_may_exist_one_in=100000 --kill_random_test=888887 --last_level_temperature=kHot --level_compaction_dynamic_level_bytes=1 --lock_wal_one_in=10000 --log2_keys_per_lock=10 --log_file_time_to_roll=60 --log_readahead_size=0 --long_running_snapshots=1 --low_pri_pool_ratio=0 --lowest_used_cache_tier=0 --manifest_preallocation_size=5120 --manual_wal_flush_one_in=0 --mark_for_compaction_one_file_in=0 --max_auto_readahead_size=16384 --max_background_compactions=20 --max_bytes_for_level_base=10485760 --max_key=100000 --max_key_len=3 --max_log_file_size=0 --max_manifest_file_size=1073741824 --max_sequential_skip_in_iterations=1 --max_total_wal_size=0 --max_write_batch_group_size_bytes=64 --max_write_buffer_number=3 --max_write_buffer_size_to_maintain=0 --memtable_insert_hint_per_batch=0 --memtable_max_range_deletions=0 --memtable_prefix_bloom_size_ratio=0 --memtable_protection_bytes_per_key=8 --memtable_whole_key_filtering=0 --memtablerep=skip_list --metadata_charge_policy=0 --metadata_read_fault_one_in=1000 --metadata_write_fault_one_in=128 --min_write_buffer_number_to_merge=1 --mmap_read=0 --mock_direct_io=True --nooverwritepercent=1 --num_file_reads_for_auto_readahead=1 --open_files=-1 --open_metadata_read_fault_one_in=0 --open_metadata_write_fault_one_in=0 --open_read_fault_one_in=0 --open_write_fault_one_in=16 --ops_per_thread=20000000 --optimize_filters_for_hits=0 --optimize_filters_for_memory=0 --optimize_multiget_for_io=0 --paranoid_file_checks=1 --partition_filters=0 --partition_pinning=3 --pause_background_one_in=1000000 --periodic_compaction_seconds=0 --persist_user_defined_timestamps=1 --prefix_size=-1 --prefixpercent=0 --prepopulate_block_cache=1 --preserve_internal_time_seconds=36000 --progress_reports=0 --promote_l0_one_in=0 --read_amp_bytes_per_bit=0 --read_fault_one_in=0 --readahead_size=0 --readpercent=50 --recycle_log_file_num=0 --reopen=20 --report_bg_io_stats=1 --reset_stats_one_in=10000 --sample_for_compression=0 --secondary_cache_fault_one_in=0 --secondary_cache_uri= --skip_stats_update_on_db_open=0 --snapshot_hold_ops=100000 --soft_pending_compaction_bytes_limit=68719476736 --sqfc_name=bar --sqfc_version=0 --sst_file_manager_bytes_per_sec=0 --sst_file_manager_bytes_per_truncate=0 --stats_dump_period_sec=10 --stats_history_buffer_size=1048576 --strict_bytes_per_sync=0 --subcompactions=1 --sync=0 --sync_fault_injection=1 --table_cache_numshardbits=6 --target_file_size_base=2097152 --target_file_size_multiplier=2 --test_batches_snapshots=0 --test_cf_consistency=0 --top_level_index_pinning=0 --uncache_aggressiveness=14 --universal_max_read_amp=-1 --unpartitioned_pinning=2 --use_adaptive_mutex=1 --use_adaptive_mutex_lru=0 --use_attribute_group=0 --use_delta_encoding=1 --use_direct_io_for_flush_and_compaction=0 --use_direct_reads=1 --use_full_merge_v1=0 --use_get_entity=1 --use_merge=0 --use_multi_cf_iterator=1 --use_multi_get_entity=1 --use_multiget=1 --use_put_entity_one_in=0 --use_sqfc_for_range_queries=1 --use_timed_put_one_in=0 --use_txn=0 --use_write_buffer_manager=0 --user_timestamp_size=8 --value_size_mult=32 --verification_only=0 --verify_checksum=1 --verify_checksum_one_in=1000000 --verify_compression=1 --verify_db_one_in=10000 --verify_file_checksums_one_in=1000 --verify_iterator_with_expected_state_one_in=5 --verify_sst_unique_id_in_manifest=1 --wal_bytes_per_sync=0 --wal_compression=zstd --write_buffer_size=4194304 --write_dbid_to_manifest=1 --write_fault_one_in=0 --writepercent=35
```
```
==1606272==ERROR: AddressSanitizer: heap-use-after-free on address 0x6060000b0cc0 at pc 0x7f733469c7de bp 0x7f7311bfcfe0 sp 0x7f7311bfc790
READ of size 40 at 0x6060000b0cc0 thread T57
    #0 0x7f733469c7dd in __interceptor_memcpy /home/engshare/third-party2/gcc/11.x/src/gcc-11.x/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:827
    https://github.com/facebook/rocksdb/issues/1 0x7f7331f65f7e in rocksdb::IterKey::SetInternalKey(rocksdb::Slice const&, rocksdb::Slice const&, unsigned long, rocksdb::ValueType, rocksdb::Slice const*) db/dbformat.h:761
    https://github.com/facebook/rocksdb/issues/2 0x7f7331f661ee in rocksdb::IterKey::SetInternalKey(rocksdb::Slice const&, unsigned long, rocksdb::ValueType, rocksdb::Slice const*) db/dbformat.h:776
    https://github.com/facebook/rocksdb/issues/3 0x7f73323039ff in rocksdb::DBIter::SetSavedKeyToSeekTarget(rocksdb::Slice const&) db/db_iter.cc:1462
    https://github.com/facebook/rocksdb/issues/4 0x7f7332304eb8 in rocksdb::DBIter::Seek(rocksdb::Slice const&) db/db_iter.cc:1540
    https://github.com/facebook/rocksdb/issues/5 0x7f7331d94abd in rocksdb::ArenaWrappedDBIter::Seek(rocksdb::Slice const&) (/data/users/jewoongh/rocksdb/librocksdb.so.9.4+0x1394abd)
    https://github.com/facebook/rocksdb/issues/6 0x7f73320f1a52 in rocksdb::MultiCfIteratorImpl::Seek(rocksdb::Slice const&)::{lambda(rocksdb::Iterator*)https://github.com/facebook/rocksdb/issues/2}::operator()(rocksdb::Iterator*) const db/multi_cf_iterator_impl.h:73
    https://github.com/facebook/rocksdb/issues/7 0x7f73320fccf0 in void rocksdb::MultiCfIteratorImpl::SeekCommon<rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::greater<int> > >, rocksdb::MultiCfIteratorImpl::Seek(rocksdb::Slice const&)::{lambda(rocksdb::Iterator*)https://github.com/facebook/rocksdb/issues/2}>(rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::greater<int> > >&, rocksdb::MultiCfIteratorImpl::Seek(rocksdb::Slice const&)::{lambda(rocksdb::Iterator*)https://github.com/facebook/rocksdb/issues/2}) (/data/users/jewoongh/rocksdb/librocksdb.so.9.4+0x16fccf0)
    https://github.com/facebook/rocksdb/issues/8 0x7f73320f1a93 in rocksdb::MultiCfIteratorImpl::Seek(rocksdb::Slice const&) db/multi_cf_iterator_impl.h:73
    https://github.com/facebook/rocksdb/issues/9 0x7f73320f1dbe in rocksdb::MultiCfIteratorImpl::Next()::{lambda()https://github.com/facebook/rocksdb/issues/1}::operator()() const db/multi_cf_iterator_impl.h:90
    https://github.com/facebook/rocksdb/issues/10 0x7f73320fe159 in rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::greater<int> > >& rocksdb::MultiCfIteratorImpl::GetHeap<rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::greater<int> > >, rocksdb::MultiCfIteratorImpl::Next()::{lambda()https://github.com/facebook/rocksdb/issues/1}>(rocksdb::MultiCfIteratorImpl::Next()::{lambda()https://github.com/facebook/rocksdb/issues/1}) (/data/users/jewoongh/rocksdb/librocksdb.so.9.4+0x16fe159)
    https://github.com/facebook/rocksdb/issues/11 0x7f73320f1ec9 in rocksdb::MultiCfIteratorImpl::Next() db/multi_cf_iterator_impl.h:87
    https://github.com/facebook/rocksdb/issues/12 0x7f73320f3255 in rocksdb::CoalescingIterator::Next() db/coalescing_iterator.h:34
    https://github.com/facebook/rocksdb/issues/13 0x66f28a in TestIterateImpl<rocksdb::Iterator, rocksdb::StressTest::TestIterate(rocksdb::ThreadState*, const rocksdb::ReadOptions&, const std::vector<int>&, const std::vector<long int>&)::<lambda(const rocksdb::ReadOptions&)>, rocksdb::StressTest::TestIterate(rocksdb::ThreadState*, const rocksdb::ReadOptions&, const std::vector<int>&, const std::vector<long int>&)::<lambda(rocksdb::Iterator*)> > db_stress_tool/db_stress_test_base.cc:1718
    https://github.com/facebook/rocksdb/issues/14 0x6440b4 in rocksdb::StressTest::TestIterate(rocksdb::ThreadState*, rocksdb::ReadOptions const&, std::vector<int, std::allocator<int> > const&, std::vector<long, std::allocator<long> > const&) db_stress_tool/db_stress_test_base.cc:1504
    https://github.com/facebook/rocksdb/issues/15 0x640cb0 in rocksdb::StressTest::OperateDb(rocksdb::ThreadState*) db_stress_tool/db_stress_test_base.cc:1376
    https://github.com/facebook/rocksdb/issues/16 0x6004f6 in rocksdb::ThreadBody(void*) db_stress_tool/db_stress_driver.cc:39
    https://github.com/facebook/rocksdb/issues/17 0x7f73327caed4 in StartThreadWrapper env/env_posix.cc:469
    https://github.com/facebook/rocksdb/issues/18 0x7f733029abc8 in start_thread /home/engshare/third-party2/glibc/2.34/src/glibc-2.34/nptl/pthread_create.c:434
    https://github.com/facebook/rocksdb/issues/19 0x7f733032cf5b in __GI___clone3 (/usr/local/fbcode/platform010/lib/libc.so.6+0x12cf5b)

0x6060000b0cc0 is located 0 bytes inside of 55-byte region [0x6060000b0cc0,0x6060000b0cf7)
freed by thread T57 here:
    #0 0x7f73346d1d77 in operator delete[](void*) /home/engshare/third-party2/gcc/11.x/src/gcc-11.x/libsanitizer/asan/asan_new_delete.cpp:163
    https://github.com/facebook/rocksdb/issues/1 0x7f7331d9274b in rocksdb::IterKey::ResetBuffer() db/dbformat.h:830
    https://github.com/facebook/rocksdb/issues/2 0x7f73323146b9 in rocksdb::IterKey::EnlargeBuffer(unsigned long) db/dbformat.cc:278
    https://github.com/facebook/rocksdb/issues/3 0x7f7331f33031 in rocksdb::IterKey::EnlargeBufferIfNeeded(unsigned long) db/dbformat.h:846
    https://github.com/facebook/rocksdb/issues/4 0x7f7331f65ee0 in rocksdb::IterKey::SetInternalKey(rocksdb::Slice const&, rocksdb::Slice const&, unsigned long, rocksdb::ValueType, rocksdb::Slice const*) db/dbformat.h:757
    https://github.com/facebook/rocksdb/issues/5 0x7f7331f661ee in rocksdb::IterKey::SetInternalKey(rocksdb::Slice const&, unsigned long, rocksdb::ValueType, rocksdb::Slice const*) db/dbformat.h:776
    https://github.com/facebook/rocksdb/issues/6 0x7f73323039ff in rocksdb::DBIter::SetSavedKeyToSeekTarget(rocksdb::Slice const&) db/db_iter.cc:1462
    https://github.com/facebook/rocksdb/issues/7 0x7f7332304eb8 in rocksdb::DBIter::Seek(rocksdb::Slice const&) db/db_iter.cc:1540
    https://github.com/facebook/rocksdb/issues/8 0x7f7331d94abd in rocksdb::ArenaWrappedDBIter::Seek(rocksdb::Slice const&) (/data/users/jewoongh/rocksdb/librocksdb.so.9.4+0x1394abd)
    https://github.com/facebook/rocksdb/issues/9 0x7f73320f1a52 in rocksdb::MultiCfIteratorImpl::Seek(rocksdb::Slice const&)::{lambda(rocksdb::Iterator*)https://github.com/facebook/rocksdb/issues/2}::operator()(rocksdb::Iterator*) const db/multi_cf_iterator_impl.h:73
    https://github.com/facebook/rocksdb/issues/10 0x7f73320fccf0 in void rocksdb::MultiCfIteratorImpl::SeekCommon<rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::greater<int> > >, rocksdb::MultiCfIteratorImpl::Seek(rocksdb::Slice const&)::{lambda(rocksdb::Iterator*)https://github.com/facebook/rocksdb/issues/2}>(rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::greater<int> > >&, rocksdb::MultiCfIteratorImpl::Seek(rocksdb::Slice const&)::{lambda(rocksdb::Iterator*)https://github.com/facebook/rocksdb/issues/2}) (/data/users/jewoongh/rocksdb/librocksdb.so.9.4+0x16fccf0)
    https://github.com/facebook/rocksdb/issues/11 0x7f73320f1a93 in rocksdb::MultiCfIteratorImpl::Seek(rocksdb::Slice const&) db/multi_cf_iterator_impl.h:73
    https://github.com/facebook/rocksdb/issues/12 0x7f73320f1dbe in rocksdb::MultiCfIteratorImpl::Next()::{lambda()https://github.com/facebook/rocksdb/issues/1}::operator()() const db/multi_cf_iterator_impl.h:90
    https://github.com/facebook/rocksdb/issues/13 0x7f73320fe159 in rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::greater<int> > >& rocksdb::MultiCfIteratorImpl::GetHeap<rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::greater<int> > >, rocksdb::MultiCfIteratorImpl::Next()::{lambda()https://github.com/facebook/rocksdb/issues/1}>(rocksdb::MultiCfIteratorImpl::Next()::{lambda()https://github.com/facebook/rocksdb/issues/1}) (/data/users/jewoongh/rocksdb/librocksdb.so.9.4+0x16fe159)
    https://github.com/facebook/rocksdb/issues/14 0x7f73320f1ec9 in rocksdb::MultiCfIteratorImpl::Next() db/multi_cf_iterator_impl.h:87
    https://github.com/facebook/rocksdb/issues/15 0x7f73320f3255 in rocksdb::CoalescingIterator::Next() db/coalescing_iterator.h:34
    https://github.com/facebook/rocksdb/issues/16 0x66f28a in TestIterateImpl<rocksdb::Iterator, rocksdb::StressTest::TestIterate(rocksdb::ThreadState*, const rocksdb::ReadOptions&, const std::vector<int>&, const std::vector<long int>&)::<lambda(const rocksdb::ReadOptions&)>, rocksdb::StressTest::TestIterate(rocksdb::ThreadState*, const rocksdb::ReadOptions&, const std::vector<int>&, const std::vector<long int>&)::<lambda(rocksdb::Iterator*)> > db_stress_tool/db_stress_test_base.cc:1718
    https://github.com/facebook/rocksdb/issues/17 0x6440b4 in rocksdb::StressTest::TestIterate(rocksdb::ThreadState*, rocksdb::ReadOptions const&, std::vector<int, std::allocator<int> > const&, std::vector<long, std::allocator<long> > const&) db_stress_tool/db_stress_test_base.cc:1504
    https://github.com/facebook/rocksdb/issues/18 0x640cb0 in rocksdb::StressTest::OperateDb(rocksdb::ThreadState*) db_stress_tool/db_stress_test_base.cc:1376
    https://github.com/facebook/rocksdb/issues/19 0x6004f6 in rocksdb::ThreadBody(void*) db_stress_tool/db_stress_driver.cc:39
    https://github.com/facebook/rocksdb/issues/20 0x7f73327caed4 in StartThreadWrapper env/env_posix.cc:469
    https://github.com/facebook/rocksdb/issues/21 0x7f733029abc8 in start_thread /home/engshare/third-party2/glibc/2.34/src/glibc-2.34/nptl/pthread_create.c:434

previously allocated by thread T57 here:
    #0 0x7f73346d13b7 in operator new[](unsigned long) /home/engshare/third-party2/gcc/11.x/src/gcc-11.x/libsanitizer/asan/asan_new_delete.cpp:102
    https://github.com/facebook/rocksdb/issues/1 0x7f73323146c5 in rocksdb::IterKey::EnlargeBuffer(unsigned long) db/dbformat.cc:279
    https://github.com/facebook/rocksdb/issues/2 0x7f7331f33031 in rocksdb::IterKey::EnlargeBufferIfNeeded(unsigned long) db/dbformat.h:846
    https://github.com/facebook/rocksdb/issues/3 0x7f7331f65ee0 in rocksdb::IterKey::SetInternalKey(rocksdb::Slice const&, rocksdb::Slice const&, unsigned long, rocksdb::ValueType, rocksdb::Slice const*) db/dbformat.h:757
    https://github.com/facebook/rocksdb/issues/4 0x7f7331f661ee in rocksdb::IterKey::SetInternalKey(rocksdb::Slice const&, unsigned long, rocksdb::ValueType, rocksdb::Slice const*) db/dbformat.h:776
    https://github.com/facebook/rocksdb/issues/5 0x7f7332303e1e in rocksdb::DBIter::SetSavedKeyToSeekForPrevTarget(rocksdb::Slice const&) db/db_iter.cc:1479
    https://github.com/facebook/rocksdb/issues/6 0x7f7332306302 in rocksdb::DBIter::SeekForPrev(rocksdb::Slice const&) db/db_iter.cc:1615
    https://github.com/facebook/rocksdb/issues/7 0x7f7331d94b0f in rocksdb::ArenaWrappedDBIter::SeekForPrev(rocksdb::Slice const&) (/data/users/jewoongh/rocksdb/librocksdb.so.9.4+0x1394b0f)
    https://github.com/facebook/rocksdb/issues/8 0x7f73320f1c5a in rocksdb::MultiCfIteratorImpl::SeekForPrev(rocksdb::Slice const&)::{lambda(rocksdb::Iterator*)https://github.com/facebook/rocksdb/issues/2}::operator()(rocksdb::Iterator*) const db/multi_cf_iterator_impl.h:82
    https://github.com/facebook/rocksdb/issues/9 0x7f73320fdc1e in void rocksdb::MultiCfIteratorImpl::SeekCommon<rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::less<int> > >, rocksdb::MultiCfIteratorImpl::SeekForPrev(rocksdb::Slice const&)::{lambda(rocksdb::Iterator*)https://github.com/facebook/rocksdb/issues/2}>(rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::less<int> > >&, rocksdb::MultiCfIteratorImpl::SeekForPrev(rocksdb::Slice const&)::{lambda(rocksdb::Iterator*)https://github.com/facebook/rocksdb/issues/2}) (/data/users/jewoongh/rocksdb/librocksdb.so.9.4+0x16fdc1e)
    https://github.com/facebook/rocksdb/issues/10 0x7f73320f1c9b in rocksdb::MultiCfIteratorImpl::SeekForPrev(rocksdb::Slice const&) db/multi_cf_iterator_impl.h:81
    https://github.com/facebook/rocksdb/issues/11 0x7f73320f2002 in rocksdb::MultiCfIteratorImpl::Prev()::{lambda()https://github.com/facebook/rocksdb/issues/1}::operator()() const db/multi_cf_iterator_impl.h:99
    https://github.com/facebook/rocksdb/issues/12 0x7f73320ff223 in rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::less<int> > >& rocksdb::MultiCfIteratorImpl::GetHeap<rocksdb::BinaryHeap<rocksdb::MultiCfIteratorInfo, rocksdb::MultiCfIteratorImpl::MultiCfHeapItemComparator<std::less<int> > >, rocksdb::MultiCfIteratorImpl::Prev()::{lambda()https://github.com/facebook/rocksdb/issues/1}>(rocksdb::MultiCfIteratorImpl::Prev()::{lambda()https://github.com/facebook/rocksdb/issues/1}) (/data/users/jewoongh/rocksdb/librocksdb.so.9.4+0x16ff223)
    https://github.com/facebook/rocksdb/issues/13 0x7f73320f210d in rocksdb::MultiCfIteratorImpl::Prev() db/multi_cf_iterator_impl.h:96
    https://github.com/facebook/rocksdb/issues/14 0x7f73320f3275 in rocksdb::CoalescingIterator::Prev() db/coalescing_iterator.h:35
    https://github.com/facebook/rocksdb/issues/15 0x66f440 in TestIterateImpl<rocksdb::Iterator, rocksdb::StressTest::TestIterate(rocksdb::ThreadState*, const rocksdb::ReadOptions&, const std::vector<int>&, const std::vector<long int>&)::<lambda(const rocksdb::ReadOptions&)>, rocksdb::StressTest::TestIterate(rocksdb::ThreadState*, const rocksdb::ReadOptions&, const std::vector<int>&, const std::vector<long int>&)::<lambda(rocksdb::Iterator*)> > db_stress_tool/db_stress_test_base.cc:1725
    https://github.com/facebook/rocksdb/issues/16 0x6440b4 in rocksdb::StressTest::TestIterate(rocksdb::ThreadState*, rocksdb::ReadOptions const&, std::vector<int, std::allocator<int> > const&, std::vector<long, std::allocator<long> > const&) db_stress_tool/db_stress_test_base.cc:1504
    https://github.com/facebook/rocksdb/issues/17 0x640cb0 in rocksdb::StressTest::OperateDb(rocksdb::ThreadState*) db_stress_tool/db_stress_test_base.cc:1376
    https://github.com/facebook/rocksdb/issues/18 0x6004f6 in rocksdb::ThreadBody(void*) db_stress_tool/db_stress_driver.cc:39
    https://github.com/facebook/rocksdb/issues/19 0x7f73327caed4 in StartThreadWrapper env/env_posix.cc:469
    https://github.com/facebook/rocksdb/issues/20 0x7f733029abc8 in start_thread /home/engshare/third-party2/glibc/2.34/src/glibc-2.34/nptl/pthread_create.c:434

Thread T57 created by T0 here:
    #0 0x7f7334642136 in __interceptor_pthread_create /home/engshare/third-party2/gcc/11.x/src/gcc-11.x/libsanitizer/asan/asan_interceptors.cpp:216
    https://github.com/facebook/rocksdb/issues/1 0x7f73327cb008 in StartThread env/env_posix.cc:479
    https://github.com/facebook/rocksdb/issues/2 0x7f733276b406 in rocksdb::CompositeEnvWrapper::StartThread(void (*)(void*), void*) env/composite_env_wrapper.h:316
    https://github.com/facebook/rocksdb/issues/3 0x7f733276b406 in rocksdb::CompositeEnvWrapper::StartThread(void (*)(void*), void*) env/composite_env_wrapper.h:316
    https://github.com/facebook/rocksdb/issues/4 0x6013d9 in rocksdb::RunStressTestImpl(rocksdb::SharedState*) db_stress_tool/db_stress_driver.cc:108
    https://github.com/facebook/rocksdb/issues/5 0x603083 in rocksdb::RunStressTest(rocksdb::SharedState*) db_stress_tool/db_stress_driver.cc:248
    https://github.com/facebook/rocksdb/issues/6 0x4e6ab3 in rocksdb::db_stress_tool(int, char**) db_stress_tool/db_stress_tool.cc:365
    https://github.com/facebook/rocksdb/issues/7 0x4e260a in main db_stress_tool/db_stress.cc:23
    https://github.com/facebook/rocksdb/issues/8 0x7f733022c656 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
    https://github.com/facebook/rocksdb/issues/9 0x7f733022c717 in __libc_start_main_impl ../csu/libc-start.c:409
    https://github.com/facebook/rocksdb/issues/10 0x4e2530 in _start (/data/users/jewoongh/rocksdb/db_stress+0x4e2530)
```

`heap-use-after-free` was no longer happening with the same command after making the change.

Reviewed By: pdillinger

Differential Revision: D58871081

Pulled By: jaykorean

fbshipit-source-id: 0194c34ffec5f16a6556c6bf3941a27253a4ecb4
2024-06-21 11:56:10 -07:00
Hui Xiao 1adb935720 Inject more errors to more files in stress test (#12713)
Summary:
**Context:**
We currently have partial error injection:
- DB operation: all read, SST write
- DB open: all read, SST write, all metadata write.

This PR completes the error injection (with some limitations below):
- DB operation & open: all read, all write, all metadata write, all metadata read

**Summary:**
- Inject retryable metadata read, metadata write error concerning directory (e.g, dir sync, ) or file metadata (e.g, name, size, file creation/deletion...)
- Inject retryable errors to all major file types: random access file, sequential file, writable file
- Allow db stress test operations to handle above injected errors gracefully without crashing
- Change all error injection to thread-local implementation for easier disabling and enabling in the same thread. For example, we can control error handling thread to have no error injection. It's also cleaner in code.
   - Limitation: compared to before, we now don't have write fault injection for backup/restore CopyOrCreateFiles work threads since they use anonymous background threads as well as read injection for db open bg thread
- Add a new flag to test error recovery without error injection so we can test the path where error recovery actually succeeds
- Some Refactory & fix to db stress test framework (see PR review comments)
- Fix some minor bugs surfaced (see PR review comments)
- Limitation: had to disable backup restore with metadata read/write injection since it surfaces too many testing issues. Will add it back later to focus on surfacing actual code/internal bugs first.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12713

Test Plan:
- Existing UT
- CI with no trivial error failure

Reviewed By: pdillinger

Differential Revision: D58326608

Pulled By: hx235

fbshipit-source-id: 011b5195aaeb6011641ae0a9194f7f2a0e325ad7
2024-06-19 08:42:00 -07:00
Yu Zhang c73cf7a878 Add CompactForTieringCollector to support automatically trigger compaction for tiering use case (#12760)
Summary:
This PR adds user property collector factory `CompactForTieringCollectorFactory` to support observe SST file and mark it as need compaction for fast tracking data to the proper tier.

A triggering ratio `compaction_trigger_ratio_` can be configured to achieve the following:
1) Setting the ratio to be equal to or smaller than 0 disables this collector
2) Setting the ratio to be within (0, 1] will write the number of observed eligible entries into a user property and marks a file as need-compaction when aforementioned condition is met.
3) Setting the ratio to be higher than 1 can be used to just writes the user table property, and not mark any file as need compaction.
 For a column family that does not enable tiering feature, even if an effective configuration is provided, this collector is still disabled. For a file that is already on the last level, this collector is also disabled.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12760

Test Plan: Added unit tests

Reviewed By: pdillinger

Differential Revision: D58734976

Pulled By: jowlyzhang

fbshipit-source-id: 6daab2c4f62b5c6689c3c03e3b3907bbbe6b7a81
2024-06-18 10:51:29 -07:00
Jonah Gao 9f95aa8269 `GetAggregatedIntProperty` accumulates property once per block cache (#12755)
Summary:
Fix issue https://github.com/facebook/rocksdb/issues/12687.

A block cache may be shared by multiple column families. Therefore, when getting the aggregated property of the block cache, we need to deduplicate by instances of the block cache, meaning the same instance should only be counted once.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12755

Reviewed By: jowlyzhang

Differential Revision: D58508819

Pulled By: ajkr

fbshipit-source-id: 3b746841d7eac59f900387ec3b8c19dbcd20aae4
2024-06-18 10:46:55 -07:00
Peter Dillinger 3758e31f3f Fix rare failure in DBBlockCacheTypeTest.Uncache (#12775)
Summary:
Following up on https://github.com/facebook/rocksdb/issues/12748 after seeing recurrence in https://github.com/facebook/rocksdb/actions/runs/9522985253/job/26253605587?pr=12774

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12775

Test Plan: Was able to reproduce failure and verify fix this time using COERCE_CONTEXT_SWITCH=1 :)

Reviewed By: jowlyzhang

Differential Revision: D58623461

Pulled By: pdillinger

fbshipit-source-id: d93a5e6a4977675eac54bbd42e70ae7b29b950a4
2024-06-14 20:50:36 -07:00
Jay Huh 0ab60b8a8c MultiCfIterator - Handle case of invalid key from child iter manual prefix iteration (#12773)
Summary:
Instead of completely disallowing `MultiCfIterator` when one or more child iterators will do manual prefix iteration (as suggested in https://github.com/facebook/rocksdb/issues/12770 ), just let `MultiCfIterator` operate as is even when there's a possibility of undefined result from child iterators. If one or more child iterators cause the heap to be empty, just return early and `Valid()` will return false.

It is still possible that heap is not empty when one or more child iterators are returning wrong keys. Basically, MultiCfIterator behaves the same as what we described in https://github.com/facebook/rocksdb/wiki/Prefix-Seek#manual-prefix-iterating - "RocksDB will not return error when it is misused and the iterating result will be undefined."

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12773

Test Plan:
MultiCfIterator added back to the stress test
```
python3 tools/db_crashtest.py blackbox --simple --max_key=25000000 --write_buffer_size=4194304 --use_attribute_group=0 --use_put_entity_one_in=1 --use_multi_get=1 --use_multi_cf_iterator=1 --verify_iterator_with_expected_state_one_in=2
```

Reviewed By: cbi42

Differential Revision: D58612055

Pulled By: jaykorean

fbshipit-source-id: e0dd942bed98382c59d463412dd8f163e6790b93
2024-06-14 15:59:17 -07:00
Yu Zhang f5e44f3490 Fix manual flush hanging on waiting for no stall for UDT in memtable … (#12771)
Summary:
This PR fix a possible manual flush hanging scenario because of its expectation that others will clear out excessive memtables was not met. The root cause is the FlushRequest rescheduling logic is using a stricter criteria for what a write stall is about to happen means than `WaitUntilFlushWouldNotStallWrites` does. Currently, the former thinks a write stall is about to happen when the last memtable is half full, and it will instead reschedule queued FlushRequest and not actually proceed with the flush. While the latter thinks if we already start to use the last memtable, we should wait until some other background flush jobs clear out some memtables before proceed this manual flush.

If we make them use the same criteria, we can guarantee that at any time when`WaitUntilFlushWouldNotStallWrites` is waiting, it's not because the rescheduling logic is holding it back.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12771

Test Plan: Added unit test

Reviewed By: ajkr

Differential Revision: D58603746

Pulled By: jowlyzhang

fbshipit-source-id: 9fa1c87c0175d47a40f584dfb1b497baa576755b
2024-06-14 13:37:37 -07:00
Yu Zhang 13c758f986 Change the behavior of manual flush to not retain UDT (#12737)
Summary:
When user-defined timestamps in Memtable only feature is enabled, all scheduled flushes go through a check to see if it's eligible to be rescheduled to retain user-defined timestamps. However when the user makes a manual flush request, their intention is for all the in memory data to be persisted into SST files as soon as possible. These two sides have some conflict of interest, the user can implement some workaround like https://github.com/facebook/rocksdb/issues/12631 to explicitly mark which one takes precedence. The implementation for this can be nuanced since the user needs to be aware of all the scenarios that can trigger a manual flush and handle the concurrency well etc.

In this PR, we updated the default behavior to give manual flush precedence when it's requested. The user-defined timestamps rescheduling mechanism is turned off when a manual flush is requested. Likewise, all error recovery triggered flushes skips the rescheduling mechanism too.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12737

Test Plan: Add unit tests

Reviewed By: ajkr

Differential Revision: D58538246

Pulled By: jowlyzhang

fbshipit-source-id: 0b9b3d1af3e8d882f2d6a2406adda19324ba0694
2024-06-13 13:18:10 -07:00
Peter Dillinger 0646ec6e2d Ensure Close() before LinkFile() for WALs in Checkpoint (#12734)
Summary:
POSIX semantics for LinkFile (hard links) allow linking a file
that is still being written two, with both the source and destination
showing any subsequent writes to the source. This may not be practical
semantics for some FileSystem implementations such as remote storage.
They might only link the flushed or sync-ed file contents at time of
LinkFile, or might even have undefined behavior if LinkFile is called on
a file still open for write (not yet "sealed"). This change builds on https://github.com/facebook/rocksdb/issues/12731
to bring more hygiene to our handling of WAL files in Checkpoint.

Specifically, we now Close WAL files as soon as they are either
(a) inactive and fully synced, or (b) inactive and obsolete (so maybe
never fully synced), rather than letting Close() happen in handling
obsolete files (maybe a background thread). This should not be a
performance issue as Close() should be trivial cost relative to other
IO ops, but just in case:
* We don't Close() while holding a mutex, to avoid blocking, and
* The old behavior is available with a new kill switch option
  `background_close_inactive_wals`.

Stacked on https://github.com/facebook/rocksdb/issues/12731

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12734

Test Plan:
Extended existing unit test, especially adding a hygiene
check to FaultInjectionTestFS to detect LinkFile() on a file still open
for writes. FaultInjectionTestFS already has relevant tracking data, and
tests can opt out of the new check, as in a smoke test I have left for
the old, deprecated functionality `background_close_inactive_wals=true`.

Also ran lengthy blackbox_crash_test to ensure the hygiene check is OK
with the crash test. (The only place I can find we use LinkFile in
production is Checkpoint.)

Reviewed By: cbi42

Differential Revision: D58295284

Pulled By: pdillinger

fbshipit-source-id: 64d90ed8477e2366c19eaf9c4c5ad60b82cac5c6
2024-06-12 11:48:45 -07:00
Peter Dillinger 21eb82ebec Disable "uncache" behavior in DB shutdown (#12751)
Summary:
Crash test showed a potential use-after-free where a file marked as obsolete and eligible for uncache on destruction is destroyed in the VersionSet destructor, which only happens as part of DB shutdown. At that point, the in-memory column families have already been destroyed, so attempting to uncache could use-after-free on stuff like getting the `user_comparator()` from the `internal_comparator()`.

I attempted to make it smarter, but wasn't able to untangle the destruction dependencies in a way that was safe, understandable, and maintainable.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12751

Test Plan:
Reproduced by adding uncache_aggressiveness to an existing (but otherwise unrelated) test. This makes it a fair regression test.

Also added testing to ensure that trivial moves and DB close & reopen are well behaved with uncache_aggressiveness. Specifically, this issue doesn't seem to be because things are uncached inappropriately in those cases.

Reviewed By: ltamasi

Differential Revision: D58390058

Pulled By: pdillinger

fbshipit-source-id: 66ac9cb13bf02638fa80ee5b7218153d8bc7cfd3
2024-06-11 15:57:40 -07:00
Evan Jones af50823069 c.h: Add set_track_and_verify_wals_in_manifest to C API (#12749)
Summary:
This option is recommended to be set for production use:

    We recommend to set track_and_verify_wals_in_manifest to true
    for production

https://github.com/facebook/rocksdb/wiki/Track-WAL-in-MANIFEST

This adds this setting to the C API, so it can be used by other languages.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12749

Reviewed By: ltamasi

Differential Revision: D58382892

Pulled By: ajkr

fbshipit-source-id: 885de4539745a3119b6b2a162ab4fca9fa975283
2024-06-10 16:26:52 -07:00
Peter Dillinger 68112b3beb Attempt fix rare failure in DBBlockCacheTypeTest.Uncache (#12748)
Summary:
I haven't been able to reproduce the failure, seen in https://github.com/facebook/rocksdb/actions/runs/9420830905/job/25953696902?pr=12734

```
[ RUN      ] DBBlockCacheTypeTestInstance/DBBlockCacheTypeTest.Uncache/2
db/db_block_cache_test.cc:1415: Failure
Expected equality of these values:
  cache->GetOccupancyCount()
    Which is: 37
  kBaselineCount + kNumDataBlocks + meta_blocks_per_file
    Which is: 15
Google Test trace:
db/db_block_cache_test.cc:1346: ua=10000
db/db_block_cache_test.cc:1344: partitioned=1
db/db_block_cache_test.cc:1418: Failure
...
```

But it's consistent with a SuperVersion reference sticking around beyond the CompactRange, as I can reproduce the result with a dangling Iterator. Like some other tests have had trouble with periodic stats popping up randomly, I suspect that could be the explanation in this case.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12748

Test Plan: Watch for similar future failures

Reviewed By: ltamasi

Differential Revision: D58366031

Pulled By: pdillinger

fbshipit-source-id: b812ca8837b8c8b9cbda1b201d76316d145fa3ec
2024-06-10 13:31:46 -07:00
Evan Jones 32e6825bc6 c.h: Add GetDbIdentity, Options::write_dbid_to_manifest (#12736)
Summary:
The write_dbid_to_manifest option is documented as "We recommend setting this flag to true". However, there is no way to set this flag from the C API.

Add the following functions to the C API:

* rocksdb_get_db_identity
* rocksdb_options_get_write_dbid_to_manifest
* rocksdb_options_set_write_dbid_to_manifest

Add a test that this option preserves the ID across checkpoints.

c.cc:
* Remove outdated comments about missing C API functions that exist.
* Document that CopyString is intended for binary data and is not NUL terminated.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12736

Reviewed By: ltamasi

Differential Revision: D58202117

Pulled By: ajkr

fbshipit-source-id: 707b110df5c4bd118d65548327428a53a9dc3019
2024-06-07 16:53:43 -07:00
Peter Dillinger b34cef57b7 Support pro-actively erasing obsolete block cache entries (#12694)
Summary:
Currently, when files become obsolete, the block cache entries associated with them just age out naturally. With pure LRU, this is not too bad, as once you "use" enough cache entries to (re-)fill the cache, you are guranteed to have purged the obsolete entries. However, HyperClockCache is a counting clock cache with a somewhat longer memory, so could be more negatively impacted by previously-hot cache entries becoming obsolete, and taking longer to age out than newer single-hit entries.

Part of the reason we still have this natural aging-out is that there's almost no connection between block cache entries and the file they are associated with. Everything is hashed into the same pool(s) of entries with nothing like a secondary index based on file. Keeping track of such an index could be expensive.

This change adds a new, mutable CF option `uncache_aggressiveness` for erasing obsolete block cache entries. The process can be speculative, lossy, or unproductive because not all potential block cache entries associated with files will be resident in memory, and attempting to remove them all could be wasted CPU time. Rather than a simple on/off switch, `uncache_aggressiveness` basically tells RocksDB how much CPU you're willing to burn trying to purge obsolete block cache entries. When such efforts are not sufficiently productive for a file, we stop and move on.

The option is in ColumnFamilyOptions so that it is dynamically changeable for already-open files, and customizeable by CF.

Note that this block cache removal happens as part of the process of purging obsolete files, which is often in a background thread (depending on `background_purge_on_iterator_cleanup` and `avoid_unnecessary_blocking_io` options) rather than along CPU critical paths.

Notable auxiliary code details:
* Possibly fixing some issues with trivial moves with `only_delete_metadata`: unnecessary TableCache::Evict in that case and missing from the ObsoleteFileInfo move operator. (Not able to reproduce an current failure.)
* Remove suspicious TableCache::Erase() from VersionSet::AddObsoleteBlobFile() (TODO follow-up item)

Marked EXPERIMENTAL until more thorough validation is complete.

Direct stats of this functionality are omitted because they could be misleading. Block cache hit rate is a better indicator of benefit, and CPU profiling a better indicator of cost.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12694

Test Plan:
* Unit tests added, including refactoring an existing test to make better use of parameterized tests.
* Added to crash test.
* Performance, sample command:
```
for I in `seq 1 10`; do for UA in 300; do for CT in lru_cache fixed_hyper_clock_cache auto_hyper_clock_cache; do rm -rf /dev/shm/test3; TEST_TMPDIR=/dev/shm/test3 /usr/bin/time ./db_bench -benchmarks=readwhilewriting -num=13000000 -read_random_exp_range=6 -write_buffer_size=10000000 -bloom_bits=10 -cache_type=$CT -cache_size=390000000 -cache_index_and_filter_blocks=1 -disable_wal=1 -duration=60 -statistics -uncache_aggressiveness=$UA 2>&1 | grep -E 'micros/op|rocksdb.block.cache.data.(hit|miss)|rocksdb.number.keys.(read|written)|maxresident' | awk '/rocksdb.block.cache.data.miss/ { miss = $4 } /rocksdb.block.cache.data.hit/ { hit = $4 } { print } END { print "hit rate = " ((hit * 1.0) / (miss + hit)) }' | tee -a results-$CT-$UA; done; done; done
```

Averaging 10 runs each case, block cache data block hit rates

```
lru_cache
UA=0   -> hit rate = 0.327, ops/s = 87668, user CPU sec = 139.0
UA=300 -> hit rate = 0.336, ops/s = 87960, user CPU sec = 139.0

fixed_hyper_clock_cache
UA=0   -> hit rate = 0.336, ops/s = 100069, user CPU sec = 139.9
UA=300 -> hit rate = 0.343, ops/s = 100104, user CPU sec = 140.2

auto_hyper_clock_cache
UA=0   -> hit rate = 0.336, ops/s = 97580, user CPU sec = 140.5
UA=300 -> hit rate = 0.345, ops/s = 97972, user CPU sec = 139.8
```

Conclusion: up to roughly 1 percentage point of improved block cache hit rate, likely leading to overall improved efficiency (because the foreground CPU cost of cache misses likely outweighs the background CPU cost of erasure, let alone I/O savings).

Reviewed By: ajkr

Differential Revision: D57932442

Pulled By: pdillinger

fbshipit-source-id: 84a243ca5f965f731f346a4853009780a904af6c
2024-06-07 08:57:11 -07:00
Yu Zhang 44aceb88d0 Add a OnManualFlushScheduled callback in event listener (#12631)
Summary:
As titled. Also added the newest user-defined timestamp into the `MemTableInfo`. This can be a useful info in the callback.

Added some unit tests as examples for how users can use two separate approaches to allow manual flush / manual compactions to go through when the user-defined timestamps in memtable only feature is enabled. One approach relies on selectively increase cutoff timestamp in `OnMemtableSeal` callback when it's initiated by a manual flush. Another approach is to increase cutoff timestamp in `OnManualFlushScheduled` callback. The caveats of the approaches are also documented in the unit test.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12631

Reviewed By: ajkr

Differential Revision: D58260528

Pulled By: jowlyzhang

fbshipit-source-id: bf446d7140affdf124744095e0a179fa6e427532
2024-06-06 17:29:01 -07:00
Hui Xiao 390fc55ba1 Revert PR 12684 and 12556 (#12738)
Summary:
**Context/Summary:** a better API design is decided lately so we decided to revert these two changes.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12738

Test Plan: - CI

Reviewed By: ajkr

Differential Revision: D58162165

Pulled By: hx235

fbshipit-source-id: 9bbe4d2fe9fbe39213f4cf137a2d419e6ffb8e16
2024-06-06 11:46:16 -07:00
Peter Dillinger 98393f0139 Fix Checkpoint hard link of inactive but unsynced WAL (#12731)
Summary:
Background: there is one active WAL file but there can be
several more WAL files in various states. Those other WALs are always
in a "flushed" state but could be on the `logs_` list not yet fully
synced. We currently allow any WAL that is not the active WAL to be
hard-linked when creating a Checkpoint, as although it might still be
open for write, we are not appending any more data to it.

The problem is that a created Checkpoint is supposed to be fully synced
on return of that function, and a hard-linked WAL in the state described
above might not be fully synced. (Through some prudence in https://github.com/facebook/rocksdb/issues/10083,
it would synced if using track_and_verify_wals_in_manifest=true.)

The fix is a step toward a long term goal of removing the need to query
the filesystem to determine WAL files and their state. (I consider it
dubious any time we independently read from or query metadata from a
file we have open for writing, as this makes us more susceptible to
FileSystem deficiencies or races.) More specifically:
* Detect which WALs might not be fully synced, according to our DBImpl
  metadata, and prevent hard linking those (with `trim_to_size=true`
  from `GetLiveFilesStorageInfo()`. And while we're at it, use our known
  flushed sizes for those WALs.
* To avoid a race between that and GetSortedWalFiles(), track a maximum
  needed WAL number for the Checkpoint/GetLiveFilesStorageInfo.
* Because of the level of consistency provided by those two, we no
  longer need to consider syncing as part of the FlushWAL in
  GetLiveFilesStorageInfo. (We determine the max WAL number consistent
  with the manifest file size, while holding DB mutex. Should make
  track_and_verify_wals_in_manifest happy.) This makes the premise of
  test PutRaceWithCheckpointTrackedWalSync obsolete (sync point callback
  no longer hit) so the test is removed, with crash test as backstop for
  related issues. See https://github.com/facebook/rocksdb/issues/10185

Stacked on https://github.com/facebook/rocksdb/issues/12729

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12731

Test Plan:
Expanded an existing test, which now fails before fix.
Also long runs of blackbox_crash_test with amplified checkpoint frequency.

Reviewed By: cbi42

Differential Revision: D58199629

Pulled By: pdillinger

fbshipit-source-id: 376e55f4a2b082cd2adb6408a41209de14422382
2024-06-05 17:40:09 -07:00
Peter Dillinger 9f4c597d83 FaultInjectionTestFS read unsynced data by default (#12729)
Summary:
In places (e.g. GetSortedWals()) RocksDB relies on querying the file size or even reading the contents of files currently open for writing, and as in POSIX semantics, expects to see the flushed size and contents regardless of what has been synced. FaultInjectionTestFS historically did not emulate this behavior, only showing synced data from such read operations. (Different from FaultInjectionTestEnv--sigh.)

This change makes the "proper" behavior the default behavior, at least for GetFileSize and FSSequentialFile. However, this new functionality is disabled in db_stress because of undiagnosed, unresolved issues.

Also removes unused and confusing field `pos_at_last_flush_`

This change is needed to support testing a relevant bug fix (in a follow-up diff).  Other suggested follow-up:
* Fix db_stress not to rely on the old behavior, and fix a related FIXME in db_stress_test_base.cc in LockWAL testing.
* Fill in some corner cases in the FileSystem API for reading unsynced data (see new TODO items).
* Consider deprecating and removing Flush() API functions from FileSystem APIs. It is not clear to me that there is a supported scenario in which they do anything but confuse API users and developers. If there is a use for them, it doesn't appear to be tested.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12729

Test Plan: applies to all unit tests successfully, just updating the unit test from https://github.com/facebook/rocksdb/issues/12556 due to relying on the errant behavior. Also added a specific unit test

Reviewed By: hx235

Differential Revision: D58091835

Pulled By: pdillinger

fbshipit-source-id: f47a63b2b000f5875b6293a98577bff663d7fd33
2024-06-04 15:25:23 -07:00
Yu Zhang 8523f0a86a Use extended file boundary for key range overlap check during file ingestion (#12735)
Summary:
When https://github.com/facebook/rocksdb/issues/12343 added support to bulk load external files while column family enables user-defined timestamps, it's a requirement that the external file doesn't overlap with the DB in key ranges. More specifically, the external file should not contain a user key (without timestamp) that already have some entries in the DB.

All the `*Overlap*` functions like `RangeOverlapWithMemtable`, `RangeOverlapWithCompaction` are using `CompareWithoutTimestamp` to check for overlap  already. One thing that is missing here is we need to extend the external file's user key boundary for this check to avoid missing the checks for the boundary user keys. For example, with the current way of checking things where `external_file_info.smallest.user_key()` is used as the left boundary, and `external_file_info.largest.user_key()` is used as the right boundary, a file with this entry: (b, 40) can fit into a DB with these two entries: (b, 30), (c, 20).

To avoid this, we extend the user key boundaries used for overlap check, by updating the left boundary with the maximum timestamp and the right boundary with the minimum timestamp.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12735

Test Plan: Added unit test

Reviewed By: ltamasi

Differential Revision: D58152117

Pulled By: jowlyzhang

fbshipit-source-id: 9cba61e7357f6d76ad44c258381c35073ebbf347
2024-06-04 13:39:51 -07:00
hgy@ruijie.com.cn 21a16f9e64 add c-api to get default cf handle (#12514)
Summary:
rocksdb_batched_multi_get_cf has performance improvement than normal multi_get, however it needs a cf_handle arg, so add a C-API to get and destroy the default cf_handle, as many user only use the default cf.

Fixes https://github.com/facebook/rocksdb/issues/12316

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12514

Reviewed By: hx235

Differential Revision: D55922517

Pulled By: ajkr

fbshipit-source-id: c4cc4289f2cfd9efbb8f390a44a9d8d1ed08d9f0
2024-06-03 11:09:35 -07:00
Yu Zhang fc59d8f9c6 Add public API `WriteWithCallback` to support custom callbacks (#12603)
Summary:
This PR adds a `DB::WriteWithCallback` API that does the same things as `DB::Write` while takes an argument `UserWriteCallback` to execute custom callback functions during the write.

We currently support two types of callback functions: `OnWriteEnqueued` and `OnWalWriteFinish`. The former is invoked   after the write is enqueued, and the later is invoked after WAL write finishes when applicable.

These callback functions are intended for users to use to improve synchronization between concurrent writes, their execution is on the write's critical path so it will impact the write's latency if not used properly. The documentation for the callback interface mentioned this and suggest user to keep these callback functions' implementation minimum.

Although transaction interfaces' writes doesn't yet allow user to specify such a user write callback argument, the `DBImpl::Write*` type of APIs do not differentiate between regular DB writes or writes coming from the transaction layer when it comes to supporting this `UserWriteCallback`. These callbacks works for all the write modes including: default write mode, Options.two_write_queues, Options.unordered_write, Options.enable_pipelined_write

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12603

Test Plan: Added unit test in ./write_callback_test

Reviewed By: anand1976

Differential Revision: D58044638

Pulled By: jowlyzhang

fbshipit-source-id: 87a84a0221df8f589ec8fc4d74597e72ce97e4cd
2024-05-31 19:30:19 -07:00
Peter Dillinger 7127119ae9 Refactor SyncWAL and SyncClosedLogs for code sharing (#12707)
Summary:
These functions were very similar and did not make sense for maintaining separately. This is not a pure refactor but I think bringing the behaviors closer together should reduce long term risk of unintentionally divergent behavior. This change is motivated by some forthcoming WAL handling fixes for Checkpoint and Backups.

* Sync() is always used on closed WALs, like the old SyncClosedWals. SyncWithoutFlush() is only used on the active (maybe) WAL. Perhaps SyncWithoutFlush() should be used whenever available, but I don't know which is preferred, as the previous state of the code was inconsistent.
* Syncing the WAL dir is selective based on need, like old SyncWAL, rather than done always like old SyncClosedLogs. This could be a performance improvement that was never applied to SyncClosedLogs but now is. We might still sync the dir more times than necessary in the case of parallel SyncWAL variants, but on a good FileSystem that's probably not too different performance-wise from us implementing something to have threads wait on each other.

Cosmetic changes:

* Rename internal function SyncClosedLogs to SyncClosedWals
* Merging the sync points into the common implementation between the two entry points isn't pretty, but should be fine.

Recommended follow-up:

* Clean up more confusing naming like log_dir_synced_

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12707

Test Plan: existing tests

Reviewed By: anand1976

Differential Revision: D57870856

Pulled By: pdillinger

fbshipit-source-id: 5455fba016d25dd5664fa41b253f18db2ca8919a
2024-05-30 14:53:13 -07:00
Rulin Huang 20777b96cb Optimizations in notify-one (#12545)
Summary:
We tested on icelake server (vcpu=160). The default configuration is allow_concurrent_memtable_write=1, thread number =activate core number. With our optimizations, the improvement can reach up to 184% in fillseq case. op/s is as the performance indicator in db_bench, and the following are performance improvements in some cases in db_bench.
| case name          | optimized/original  |
|-------------------:|--------------------:|
| fillrandom         | 182%                |
| fillseq            | 184%                |
| fillsync           | 136%                |
| overwrite          | 179%                |
| randomreplacekeys  | 180%                |
| randomtransaction  | 161%                |
| updaterandom       | 163%                |
| xorupdaterandom    | 165%                |

With analysis, we find that although the process of writing memtable is processed in parallel, the process of waking up the writers is not processed in parallel, which means that only one writers is responsible for the sequential waking up other writers. The following is our method to optimize this process.

Assume that there are currently n threads in total, we parallelize SetState in LaunchParallelMemTableWriters. To wake up each writer to write its own memtable, the leader writer first wakes up the (n^0.5-1) caller writers, and then those callers and the leader will wake up n/x separately to write to the memtable. This reduces the number for the leader's to SetState n-1 writers to 2*(n^0.5) writers in turn.

A reproduction script:
./db_bench --benchmarks="fillrandom"  --threads ${number of all activate vcpu}  --seed 1708494134896523  --duration 60

![image](https://github.com/facebook/rocksdb/assets/22110918/c5eca02f-93b3-4434-bba2-5155fc892a97)

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12545

Reviewed By: ajkr

Differential Revision: D57422827

Pulled By: cbi42

fbshipit-source-id: 94127937c0c61e4241720bd902c82c607b7b2431
2024-05-30 09:10:44 -07:00
Changyu Bi af3be5255a Fail DeleteRange() early when row_cache is configured (#12710)
Summary:
https://github.com/facebook/rocksdb/issues/12512 added the sanity check for this incompatible combination. However, it does the check during memtable insertion which can turn the DB into read-only mode. This PR moves the check earlier so that this write failure will not turn the DB into read-only mode and affect other DB operations.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12710

Test Plan: * updated unit test `DBRangeDelTest.RowCache` to write to DB after a failed DeleteRange(). The test fails before this PR.

Reviewed By: ajkr

Differential Revision: D57925188

Pulled By: cbi42

fbshipit-source-id: 8bf001bd3fcf05635411ba28bc4a037321942879
2024-05-29 15:03:15 -07:00
anand76 9cc6168c98 Add LDB command and option for follower instances (#12682)
Summary:
Add the `--leader_path` option to specify the directory path of the leader for a follower RocksDB instance. This PR also adds a `count` command to the repl shell. While not specific to followers, it is useful for testing purposes.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12682

Reviewed By: jowlyzhang

Differential Revision: D57642296

Pulled By: anand1976

fbshipit-source-id: 53767d496ecadc363ff92cd958b8e15a7bf3b151
2024-05-28 23:21:32 -07:00
HypenZou 8765a0f546 Fix version edit dump in json (#12703)
Summary:
**Context/Summary:**
the flag --json of manifest_dump in ldb tool has no effect
The bug may  be introduced by pr https://github.com/facebook/rocksdb/pull/8378

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12703

Reviewed By: cbi42

Differential Revision: D57848094

Pulled By: ajkr

fbshipit-source-id: 3d1ce65528bf4ce9c53593a7208406ab90e8994b
2024-05-28 16:44:25 -07:00
muthukrishnan24 259f21e695 Add WB, WBWI Create, UpdateTimestamp, Iterator::Refresh in C API (#10529)
Summary:
This PR adds UpdateTimestamp API of WriteBatch and WBWI, create WB, WBWI with all options and Iterator Refresh in C API

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10529

Reviewed By: cbi42

Differential Revision: D57826913

Pulled By: ajkr

fbshipit-source-id: d2ec840129f61a1d3a5a12e859728be98ebbad2f
2024-05-28 15:36:09 -07:00
Jaepil Jeong c115eb6162 Fix compile errors in C++23 (#12106)
Summary:
This PR fixes compile errors in C++23.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12106

Reviewed By: cbi42

Differential Revision: D57826279

Pulled By: ajkr

fbshipit-source-id: 594abfd8eceaf51eaf3bbabf7696c0bb5e0e9a68
2024-05-28 15:33:57 -07:00