Commit Graph

282 Commits

Author SHA1 Message Date
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
Jay Huh a901ef48f0 Introduce use_multi_cf_iterator in stress test (#12706)
Summary:
Introduce `use_multi_cf_iterator`, and when it's set, use `CoalescingIterator` in `TestIterate()`. Because all the column families contain the same data in today's Stress Test, we can compare `CoalescingIterator` against any `DBIter` from any of the column families. Currently, coalescing logic verification is done by unit tests, but we can extend the stress test to support different data in different column families in the future.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12706

Test Plan:
```
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
```

**More PRs to come**
- Use `AttributeGroupIterator` when both `use_multi_cf_iterator` and `use_attribute_group` are true
- Support `Refresh()` in `CoalescingIterator`
- Extend Stress Test to support different data in different CFs (Long-term)

Reviewed By: ltamasi

Differential Revision: D58020247

Pulled By: jaykorean

fbshipit-source-id: 8e2483b85cf2bb0f5a9bb44851601bbf063484ec
2024-05-31 10:50:15 -07:00
Peter Dillinger d2ef70872f Rename, deprecate `LogFile` and `VectorLogPtr` (#12695)
Summary:
These names are confusing with `Logger` etc. so moving to `WalFile` etc.

Other small, related name refactorings.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12695

Test Plan: Left most unit tests using old names as an API compatibility test. Non-test code compiles with deprecated names removed. No functional changes.

Reviewed By: ajkr

Differential Revision: D57747458

Pulled By: pdillinger

fbshipit-source-id: 7b77596b9c20d865d43b9dc66c30c8bd2b3b424f
2024-05-28 09:24:49 -07:00
Changyu Bi fecb10c2fa Improve universal compaction sorted-run trigger (#12477)
Summary:
Universal compaction currently uses `level0_file_num_compaction_trigger` for two purposes:
1. the trigger for checking if there is any compaction to do, and
2. the limit on the number of sorted runs. RocksDB will do compaction to keep the number of sorted runs no more than the value of this option.

This can make the option inflexible. A value that is too small causes higher write amp: more compactions to reduce the number of sorted runs. A value that is too big delays potential compaction work and causes worse read performance. This PR introduce an option `CompactionOptionsUniversal::max_read_amp` for only the second purpose: to specify
the hard limit on the number of sorted runs.

For backward compatibility, `max_read_amp = -1` by default, which means to fallback to the current behavior.
When `max_read_amp > 0`,`level0_file_num_compaction_trigger` will only serve as a trigger to find potential compaction.
When `max_read_amp = 0`, RocksDB will auto-tune the limit on the number of sorted runs. The estimation is based on DB size, write_buffer_size and size_ratio, so it is adaptive to the size change of the DB. See more in `UniversalCompactionBuilder::PickCompaction()`.
Alternatively, users now can configure `max_read_amp` to a very big value and keep `level0_file_num_compaction_trigger` small. This will allow `size_ratio` and `max_size_amplification_percent` to control the number of sorted runs. This essentially disables compactions with reason kUniversalSortedRunNum.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12477

Test Plan:
* new unit test
* existing unit test for default behavior
* updated crash test with the new option
* benchmark:
  * Create a DB that is roughly 24GB in the last level. When `max_read_amp = 0`, we estimate that the DB needs 9 levels to avoid excessive compactions to reduce the number of sorted runs.
  * We then run fillrandom to ingest another 24GB data to compare write amp.
     * case 1: small level0 trigger: `level0_file_num_compaction_trigger=5, max_read_amp=-1`
       * write-amp: 4.8
     * case 2: auto-tune: `level0_file_num_compaction_trigger=5, max_read_amp=0`
       *  write-amp: 3.6
     * case 3: auto-tune with minimal trigger: `level0_file_num_compaction_trigger=1, max_read_amp=0`
       *  write-amp: 3.8
     * case 4: hard-code a good value for trigger: `level0_file_num_compaction_trigger=9`
       * write-amp: 2.8
```
Case 1:
** Compaction Stats [default] **
Level    Files   Size     Score Read(GB)  Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  L0      0/0    0.00 KB   1.0      0.0     0.0      0.0      22.6     22.6       0.0   1.0      0.0    163.2    141.94            111.10       108    1.314       0      0       0.0       0.0
 L45      8/0    1.81 GB   0.0     39.6    11.1     28.5      39.3     10.8       0.0   3.5    209.0    207.3    194.25            191.29        43    4.517    348M  2498K       0.0       0.0
 L46     13/0    3.12 GB   0.0     15.3     9.5      5.8      15.0      9.3       0.0   1.6    203.1    199.3     77.13             75.88        16    4.821    134M  2362K       0.0       0.0
 L47     19/0    4.68 GB   0.0     15.4    10.5      4.9      14.7      9.8       0.0   1.4    204.0    194.9     77.38             76.15         8    9.673    135M  5920K       0.0       0.0
 L48     38/0    9.42 GB   0.0     19.6    11.7      7.9      17.3      9.4       0.0   1.5    206.5    182.3     97.15             95.02         4   24.287    172M    20M       0.0       0.0
 L49     91/0   22.70 GB   0.0      0.0     0.0      0.0       0.0      0.0       0.0   0.0      0.0      0.0      0.00              0.00         0    0.000       0      0       0.0       0.0
 Sum    169/0   41.74 GB   0.0     89.9    42.9     47.0     109.0     61.9       0.0   4.8    156.7    189.8    587.85            549.45       179    3.284    791M    31M       0.0       0.0

Case 2:
** Compaction Stats [default] **
Level    Files   Size     Score Read(GB)  Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  L0      1/0   214.47 MB   1.2      0.0     0.0      0.0      22.6     22.6       0.0   1.0      0.0    164.5    140.81            109.98       108    1.304       0      0       0.0       0.0
 L44      0/0    0.00 KB   0.0      1.3     1.3      0.0       1.2      1.2       0.0   1.0    206.1    204.9      6.24              5.98         3    2.081     11M    51K       0.0       0.0
 L45      4/0   844.36 MB   0.0      7.1     5.4      1.7       7.0      5.4       0.0   1.3    194.6    192.9     37.41             36.00        13    2.878     62M   489K       0.0       0.0
 L46     11/0    2.57 GB   0.0     14.6     9.8      4.8      14.3      9.5       0.0   1.5    193.7    189.8     77.09             73.54        17    4.535    128M  2411K       0.0       0.0
 L47     24/0    5.81 GB   0.0     19.8    12.0      7.8      18.8     11.0       0.0   1.6    191.4    181.1    106.19            101.21         9   11.799    174M  9166K       0.0       0.0
 L48     38/0    9.42 GB   0.0     19.6    11.8      7.9      17.3      9.4       0.0   1.5    197.3    173.6    101.97             97.23         4   25.491    172M    20M       0.0       0.0
 L49     91/0   22.70 GB   0.0      0.0     0.0      0.0       0.0      0.0       0.0   0.0      0.0      0.0      0.00              0.00         0    0.000       0      0       0.0       0.0
 Sum    169/0   41.54 GB   0.0     62.4    40.3     22.1      81.3     59.2       0.0   3.6    136.1    177.2    469.71            423.94       154    3.050    549M    32M       0.0       0.0

Case 3:
** Compaction Stats [default] **
Level    Files   Size     Score Read(GB)  Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  L0      0/0    0.00 KB   5.0      0.0     0.0      0.0      22.6     22.6       0.0   1.0      0.0    163.8    141.43            111.13       108    1.310       0      0       0.0       0.0
 L44      0/0    0.00 KB   0.0      0.8     0.8      0.0       0.8      0.8       0.0   1.0    201.4    200.2      4.26              4.19         2    2.130   7360K    33K       0.0       0.0
 L45      4/0   844.38 MB   0.0      6.3     5.0      1.2       6.2      5.0       0.0   1.2    202.0    200.3     31.81             31.50        12    2.651     55M   403K       0.0       0.0
 L46      7/0    1.62 GB   0.0     13.3     8.8      4.6      13.1      8.6       0.0   1.5    198.9    195.7     68.72             67.89        17    4.042    117M  1696K       0.0       0.0
 L47     24/0    5.81 GB   0.0     21.7    12.9      8.8      20.6     11.8       0.0   1.6    198.5    188.6    112.04            109.97        12    9.336    191M  9352K       0.0       0.0
 L48     41/0   10.14 GB   0.0     24.8    13.0     11.8      21.9     10.1       0.0   1.7    198.6    175.6    127.88            125.36         6   21.313    218M    25M       0.0       0.0
 L49     91/0   22.70 GB   0.0      0.0     0.0      0.0       0.0      0.0       0.0   0.0      0.0      0.0      0.00              0.00         0    0.000       0      0       0.0       0.0
 Sum    167/0   41.10 GB   0.0     67.0    40.5     26.4      85.4     58.9       0.0   3.8    141.1    179.8    486.13            450.04       157    3.096    589M    36M       0.0       0.0

Case 4:
** Compaction Stats [default] **
Level    Files   Size     Score Read(GB)  Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  L0      0/0    0.00 KB   0.7      0.0     0.0      0.0      22.6     22.6       0.0   1.0      0.0    158.6    146.02            114.68       108    1.352       0      0       0.0       0.0
 L42      0/0    0.00 KB   0.0      1.7     1.7      0.0       1.7      1.7       0.0   1.0    185.4    184.3      9.25              8.96         4    2.314     14M    67K       0.0       0.0
 L43      0/0    0.00 KB   0.0      2.5     2.5      0.0       2.5      2.5       0.0   1.0    197.8    195.6     13.01             12.65         4    3.253     22M   202K       0.0       0.0
 L44      4/0   844.40 MB   0.0      4.2     4.2      0.0       4.1      4.1       0.0   1.0    188.1    185.1     22.81             21.89         5    4.562     36M   503K       0.0       0.0
 L45     13/0    3.12 GB   0.0      7.5     6.5      1.0       7.2      6.2       0.0   1.1    188.7    181.8     40.69             39.32         5    8.138     65M  2282K       0.0       0.0
 L46     17/0    4.18 GB   0.0      8.3     7.1      1.2       7.9      6.6       0.0   1.1    192.2    181.8     44.23             43.06         4   11.058     73M  3846K       0.0       0.0
 L47     22/0    5.34 GB   0.0      8.9     7.5      1.4       8.2      6.8       0.0   1.1    189.1    174.1     48.12             45.37         3   16.041     78M  6098K       0.0       0.0
 L48     27/0    6.58 GB   0.0      9.2     7.6      1.6       8.2      6.6       0.0   1.1    195.2    172.9     48.52             47.11         2   24.262     81M  9217K       0.0       0.0
 L49     91/0   22.70 GB   0.0      0.0     0.0      0.0       0.0      0.0       0.0   0.0      0.0      0.0      0.00              0.00         0    0.000       0      0       0.0       0.0
 Sum    174/0   42.74 GB   0.0     42.3    37.0      5.3      62.4     57.1       0.0   2.8    116.3    171.3    372.66            333.04       135    2.760    372M    22M       0.0       0.0

setup:
./db_bench --benchmarks=fillseq,compactall,waitforcompaction --num=200000000 --compression_type=none --disable_wal=1 --compaction_style=1 --num_levels=50 --target_file_size_base=268435456 --max_compaction_bytes=6710886400 --level0_file_num_compaction_trigger=10 --write_buffer_size=268435456 --seed 1708494134896523

benchmark:
./db_bench --benchmarks=overwrite,waitforcompaction,stats --num=200000000 --compression_type=none --disable_wal=1 --compaction_style=1 --write_buffer_size=268435456 --level0_file_num_compaction_trigger=5 --target_file_size_base=268435456 --use_existing_db=1 --num_levels=50 --writes=200000000 --universal_max_read_amp=-1 --seed=1716488324800233

```

Reviewed By: ajkr

Differential Revision: D55370922

Pulled By: cbi42

fbshipit-source-id: 9be69979126b840d08e93e7059260e76a878bb2a
2024-05-24 10:10:31 -07:00
Levi Tamasi db0960800a Add Transaction::PutEntity to the stress tests (#12688)
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12688

As a first step of covering the wide-column transaction APIs, the patch adds `PutEntity` to the optimistic and pessimistic transaction stress tests (for the latter, only when the WriteCommitted policy is utilized). Other APIs and the multi-operation transaction test will be covered by subsequent PRs.

Reviewed By: jaykorean

Differential Revision: D57675781

fbshipit-source-id: bfe062ec5f6ab48641cd99a70f239ce4aa39299c
2024-05-22 11:30:33 -07:00
Peter Dillinger d89ab23bec Disallow memtable flush and sst ingest while WAL is locked (#12652)
Summary:
We recently noticed that some memtable flushed and file
ingestions could proceed during LockWAL, in violation of its stated
contract. (Note: we aren't 100% sure its actually needed by MySQL, but
we want it to be in a clean state nonetheless.)

Despite earlier skepticism that this could be done safely (https://github.com/facebook/rocksdb/issues/12666), I
found a place to wait to wait for LockWAL to be cleared before allowing
these operations to proceed: WaitForPendingWrites()

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12652

Test Plan:
Added to unit tests. Extended how db_stress validates LockWAL
and re-enabled combination of ingestion and LockWAL in crash test, in
follow-up to https://github.com/facebook/rocksdb/issues/12642

Ran blackbox_crash_test for a long while with relevant features
amplified.

Suggested follow-up: fix FaultInjectionTestFS to report file sizes
consistent with what the user has requested to be flushed.

Reviewed By: jowlyzhang

Differential Revision: D57622142

Pulled By: pdillinger

fbshipit-source-id: aef265fce69465618974b4ec47f4636257c676ce
2024-05-21 10:17:34 -07:00
Hui Xiao d7b938882e Sync WAL during db Close() (#12556)
Summary:
**Context/Summary:**
Below crash test found out we don't sync WAL upon DB close, which can lead to unsynced data loss. This PR syncs it.
```
./db_stress --threads=1 --disable_auto_compactions=1 --WAL_size_limit_MB=0 --WAL_ttl_seconds=0 --acquire_snapshot_one_in=0 --adaptive_readahead=0 --adm_policy=1 --advise_random_on_open=1 --allow_concurrent_memtable_write=1 --allow_data_in_errors=True --allow_fallocate=0 --async_io=0 --auto_readahead_size=0 --avoid_flush_during_recovery=1 --avoid_flush_during_shutdown=0 --avoid_unnecessary_blocking_io=1 --backup_max_size=104857600 --backup_one_in=0 --batch_protection_bytes_per_key=0 --bgerror_resume_retry_interval=1000000 --block_align=0 --block_protection_bytes_per_key=2 --block_size=16384 --bloom_before_level=1 --bloom_bits=29.895303579352174 --bottommost_compression_type=disable --bottommost_file_compaction_delay=0 --bytes_per_sync=0 --cache_index_and_filter_blocks=0 --cache_index_and_filter_blocks_with_high_priority=1 --cache_size=33554432 --cache_type=lru_cache --charge_compression_dictionary_building_buffer=1 --charge_file_metadata=0 --charge_filter_construction=1 --charge_table_reader=1 --checkpoint_one_in=0 --checksum_type=kxxHash64 --clear_column_family_one_in=0 --column_families=1 --compact_files_one_in=0 --compact_range_one_in=0 --compaction_pri=0 --compaction_readahead_size=0 --compaction_style=0 --compaction_ttl=0 --compress_format_version=2 --compressed_secondary_cache_ratio=0 --compressed_secondary_cache_size=0 --compression_checksum=1 --compression_max_dict_buffer_bytes=0 --compression_max_dict_bytes=0 --compression_parallel_threads=4 --compression_type=zstd --compression_use_zstd_dict_trainer=1 --compression_zstd_max_train_bytes=0 --continuous_verification_interval=0 --data_block_index_type=0 --db=/dev/shm/rocksdb_test/rocksdb_crashtest_whitebox --db_write_buffer_size=0 --default_temperature=kUnknown --default_write_temperature=kUnknown --delete_obsolete_files_period_micros=0 --delpercent=0 --delrangepercent=0 --destroy_db_initially=1 --detect_filter_construct_corruption=1 --disable_wal=0 --dump_malloc_stats=0 --enable_checksum_handoff=0 --enable_compaction_filter=0 --enable_custom_split_merge=0 --enable_do_not_compress_roles=1 --enable_index_compression=1 --enable_memtable_insert_with_hint_prefix_extractor=0 --enable_pipelined_write=0 --enable_sst_partitioner_factory=0 --enable_thread_tracking=1 --enable_write_thread_adaptive_yield=0 --expected_values_dir=/dev/shm/rocksdb_test/rocksdb_crashtest_expected --fail_if_options_file_error=0 --fifo_allow_compaction=1 --file_checksum_impl=none --fill_cache=0 --flush_one_in=1000 --format_version=5 --get_current_wal_file_one_in=0 --get_live_files_one_in=0 --get_property_one_in=0 --get_sorted_wal_files_one_in=0 --hard_pending_compaction_bytes_limit=274877906944 --high_pri_pool_ratio=0 --index_block_restart_interval=6 --index_shortening=0 --index_type=0 --ingest_external_file_one_in=0 --initial_auto_readahead_size=16384 --iterpercent=0 --key_len_percent_dist=1,30,69 --last_level_temperature=kUnknown --level_compaction_dynamic_level_bytes=1 --lock_wal_one_in=0 --log2_keys_per_lock=10 --log_file_time_to_roll=0 --log_readahead_size=16777216 --long_running_snapshots=0 --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=0 --max_background_compactions=1 --max_bytes_for_level_base=67108864 --max_key=2500000 --max_key_len=3 --max_log_file_size=0 --max_manifest_file_size=1073741824 --max_sequential_skip_in_iterations=8 --max_total_wal_size=0 --max_write_batch_group_size_bytes=64 --max_write_buffer_number=10 --max_write_buffer_size_to_maintain=0 --memtable_insert_hint_per_batch=0 --memtable_max_range_deletions=0 --memtable_prefix_bloom_size_ratio=0.5 --memtable_protection_bytes_per_key=1 --memtable_whole_key_filtering=1 --memtablerep=skip_list --metadata_charge_policy=0 --min_write_buffer_number_to_merge=1 --mmap_read=0 --mock_direct_io=True --nooverwritepercent=1 --num_file_reads_for_auto_readahead=0 --num_levels=1 --open_files=-1 --open_metadata_write_fault_one_in=0 --open_read_fault_one_in=0 --open_write_fault_one_in=0 --ops_per_thread=3 --optimize_filters_for_hits=1 --optimize_filters_for_memory=1 --optimize_multiget_for_io=0 --paranoid_file_checks=0 --partition_filters=0 --partition_pinning=1 --pause_background_one_in=0 --periodic_compaction_seconds=0 --prefix_size=1 --prefixpercent=0 --prepopulate_block_cache=0 --preserve_internal_time_seconds=3600 --progress_reports=0 --read_amp_bytes_per_bit=0 --read_fault_one_in=0 --readahead_size=16384 --readpercent=0 --recycle_log_file_num=0 --reopen=2 --report_bg_io_stats=1 --sample_for_compression=5 --secondary_cache_fault_one_in=0 --secondary_cache_uri= --skip_stats_update_on_db_open=1 --snapshot_hold_ops=0 --soft_pending_compaction_bytes_limit=68719476736 --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=3 --sync=0 --sync_fault_injection=1 --table_cache_numshardbits=6 --target_file_size_base=16777216 --target_file_size_multiplier=1 --test_batches_snapshots=0 --top_level_index_pinning=0 --unpartitioned_pinning=3 --use_adaptive_mutex=1 --use_adaptive_mutex_lru=0 --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_get_entity=0 --use_multiget=1 --use_put_entity_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=1000 --verify_compression=0 --verify_db_one_in=100000 --verify_file_checksums_one_in=0 --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=33554432 --write_dbid_to_manifest=0 --write_fault_one_in=0 --writepercent=100

 Verification failed for column family 0 key 000000000000B9D1000000000000012B000000000000017D (4756691): value_from_db: , value_from_expected: 010000000504070609080B0A0D0C0F0E111013121514171619181B1A1D1C1F1E212023222524272629282B2A2D2C2F2E313033323534373639383B3A3D3C3F3E, msg: Iterator verification: Value not found: NotFound:
Verification failed :(
```

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12556

Test Plan:
- New UT
- Same stress test command failed before this fix but pass after
- CI

Reviewed By: ajkr

Differential Revision: D56267964

Pulled By: hx235

fbshipit-source-id: af1b7e8769c129f64ba1c7f1ff17102f1239b929
2024-05-20 17:33:43 -07:00
Changyu Bi 2eb404de13 Print non-ok status for multi_ops_txns_stress test (#12660)
Summary:
Currently `assert(s.ok())` does not offer much information to debug.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12660

Test Plan:
revert https://github.com/facebook/rocksdb/issues/12639 and run `python3 ./tools/db_crashtest.py blackbox --write_policy write_prepared --recycle_log_file_num=1 --threads=1 --test_multiops_txn`

before this PR:
```
Exit Before Killing
stdout:

stderr:
 db_stress: db_stress_tool/multi_ops_txns_stress.cc:1529: void rocksdb::MultiOpsTxnsStressTest::PreloadDb(rocksdb::SharedState*, int, uint32_t, uint32_t, uint32_t, uint32_t): Assertion `s.ok()' failed.
```

after this PR:
```
Exit Before Killing
stdout:

stderr:
 Verification failed: PreloadDB failed: Invalid argument: WriteOptions::disableWAL option is not supported if DBOptions::recycle_log_file_num > 0
db_stress: db_stress_tool/db_stress_test_base.cc:517: void rocksdb::StressTest::ProcessStatus(rocksdb::SharedState*, std::string, rocksdb::Status, bool) const: Assertion `false' failed.
Received signal 6 (Aborted)
```

Reviewed By: ajkr

Differential Revision: D57410819

Pulled By: cbi42

fbshipit-source-id: a03c2202c3fd666eb2f58bae24e0c9e3e6ed4265
2024-05-15 21:14:41 -07:00
Hui Xiao 9bddac0dcf Add more public APIs to crash test (#12617)
Summary:
**Context/Summary:**
As titled. Bonus: found that PromoteL0 called with other concurrent PromoteL0 will return non-okay error so clarify the API.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12617

Test Plan: CI

Reviewed By: ajkr

Differential Revision: D56954428

Pulled By: hx235

fbshipit-source-id: 0e056153c515003fd241ffec59b0d8a27529db4c
2024-05-09 15:37:38 -07:00
Changyu Bi 5bf2c00a35 Clarify manual compaction and file ingestion behavior with FIFO compaction (#12618)
Summary:
For manual compaction, FIFO compaction will always skip key range overlapping checking with SST files. If CompactRange() is called with CompactionRangeOptions::change_level=true, a CF with FIFO compaction will now return Status::NotSupported.

For file ingestion, we will always ingest into L0. Previously, it's possible to ingest files into non-L0 levels with FIFO compaction.

These changes also help to fix [this](a178d15baf/db/db_impl/db_impl_compaction_flush.cc (L1269)) assertion failure in crash tests.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12618

Test Plan: added unit tests to verify the new behavior.

Reviewed By: hx235

Differential Revision: D56962401

Pulled By: cbi42

fbshipit-source-id: 19812a1509650b4162b379ca5bee02f2e9d9569d
2024-05-07 12:00:15 -07:00
Hui Xiao b312dbe920 Remove duplicate inplace_update_support crash/stress test flag (#12610)
Summary:
**Context/Summary:**
As titled. There were two flags serving the same purpose so removed one of them.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12610

Test Plan: CI

Reviewed By: jaykorean, ajkr

Differential Revision: D56916119

Pulled By: hx235

fbshipit-source-id: 011140a7945782cc613ca86d4b542db0cf7fb444
2024-05-03 11:33:33 -07:00
Hui Xiao 24a35b6e57 Add more public APIs to crash/stress test (#12541)
Summary:
**Context/Summary:**
This PR includes some public DB APIs not tested in crash/stress yet can be added in a straightforward way.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12541

Test Plan:
- Locally run crash test heavily stressing on these new APIs
- CI

Reviewed By: jowlyzhang

Differential Revision: D56164892

Pulled By: hx235

fbshipit-source-id: 8bb568c3e65aec39d642987033f1d76c52f69bd8
2024-04-16 15:43:26 -07:00
Jay Huh dfdc3b158e Add offpeak feature to crash test (#12549)
Summary:
As title. Add offpeak feature in stress test.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12549

Test Plan:
Ran stress test locally with the flag set
```
Running db_stress with pid=701060: ./db_stress ... --daily_offpeak_time_utc=04:00-08:00 ... --periodic_compaction_seconds=10 ...
...
KILLED 701060

stdout:
 Choosing random keys with no overwrite
Creating 6250000 locks
2024/04/16-11:38:19  Initializing db_stress
RocksDB version           : 9.2
Format version            : 5
TransactionDB             : false
Stacked BlobDB            : false
Read only mode            : false
Atomic flush              : false
Manual WAL flush          : true
Column families           : 1
Clear CFs one in          : 0
Number of threads         : 32
Ops per thread            : 100000000
Time to live(sec)         : unused
Read percentage           : 60%
Prefix percentage         : 0%
Write percentage          : 35%
Delete percentage         : 4%
Delete range percentage   : 1%
No overwrite percentage   : 1%
Iterate percentage        : 0%
Custom ops percentage     : 0%
DB-write-buffer-size      : 0
Write-buffer-size         : 4194304
Iterations                : 10
Max key                   : 25000000
Ratio #ops/#keys          : 128.000000
Num times DB reopens      : 0
Batches/snapshots         : 0
Do update in place        : 0
Num keys per lock         : 4
Compression               : LZ4
Bottommost Compression    : DisableOption
Checksum type             : kxxHash
File checksum impl        : none
Bloom bits / key          : 18.000000
Max subcompactions        : 4
Use MultiGet              : false
Use GetEntity             : false
Use MultiGetEntity        : false
Verification only         : false
Memtablerep               : skip_list
Test kill odd             : 0
Periodic Compaction Secs  : 10
Daily Offpeak UTC         : 04:00-08:00  <<<<<<<<<<<<<<< Newly added
Compaction TTL            : 0
Compaction Pri            : kMinOverlappingRatio
Background Purge          : 0
Write DB ID to manifest   : 0
Max Write Batch Group Size: 16
Use dynamic level         : 1
Read fault one in         : 0
Write fault one in        : 1000
Open metadata write fault one in:
                            8
Sync fault injection      : 0
Best efforts recovery     : 0
Fail if OPTIONS file error: 0
User timestamp size bytes : 0
Persist user defined timestamps : 1
WAL compression           : zstd
Try verify sst unique id  : 1
------------------------------------------------
```

Reviewed By: hx235

Differential Revision: D56203102

Pulled By: jaykorean

fbshipit-source-id: 11a9be7362b3b26940d74d41c8bf4ebac3f03a2d
2024-04-16 12:44:44 -07:00
Hui Xiao d41e568b1c Add inplace_update_support to crash/stress test (#12535)
Summary:
**Context/Summary:**
`inplace_update_support=true` is not tested in crash/stress test. Since it's not compatible with snapshots like compaction_filter, we need to sanitize its value in presence of snapshots-related options. A minor refactoring is added to centralize such sanitization in db_crashtest.py - see `check_multiget_consistency` and `check_multiget_entity_consistency`

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12535

Test Plan: CI

Reviewed By: ajkr

Differential Revision: D56102978

Pulled By: hx235

fbshipit-source-id: 2e2ab6685a65123b14a321b99f45f60bc6509c6b
2024-04-15 16:11:58 -07:00
Hui Xiao ef26d68e8d Renable kAdmPolicyThreeQueue in crash test (#12524)
Summary:
Context/Summary:

We need a `nvm_sec_cache` when `kAdmPolicyThreeQueue` is used otherwise a nullptr cache will be accessed causing us segfault in https://github.com/facebook/rocksdb/pull/12521

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12524

Test Plan: - Re-enabled `kAdmPolicyThreeQueue` and rehearsed stress test that failed before this fix and pass after

Reviewed By: jowlyzhang

Differential Revision: D55997093

Pulled By: hx235

fbshipit-source-id: e1c6f1015091b4cff0ce6a3fff981d5dece52a62
2024-04-11 14:53:11 -07:00
Hui Xiao ad423abbd1 Add more missing options in crash test (#12508)
Summary:
**Context/Summary:**
This is to improve our crash test coverage.

Bonus change:
- Added the missing Options string mapping for `CacheTier::kVolatileCompressedTier`
- Deprecated crash test options `enable_tiered_storage` mainly for setting `last_level_temperature` which is now covered in crash test by itself
- Intensified `verify_checksum_one_in\verify_file_checksums_one_in` as I found out these together with new coverage surface more issues

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12508

Test Plan: CI to look out for trivial failures

Reviewed By: jowlyzhang

Differential Revision: D55768594

Pulled By: hx235

fbshipit-source-id: 9b829da0309a7db3fcdb17992a524dd64498325c
2024-04-08 09:48:03 -07:00
Hui Xiao d985902ef4 Disallow refitting more than 1 file from non-L0 to L0 (#12481)
Summary:
**Context/Summary:**
We recently discovered that `CompactRange(change_level=true, target_level=0)` can possibly refit more than 1 files to L0. This refitting can cause read performance regression as we need to go through every file in L0, corruption in some edge case and false positive corruption caught by force consistency check. We decided to explicitly disallow such behavior.

A related change to OptionChangeMigration():
- When migrating to FIFO with `compaction_options_fifo.max_table_files_size > 0`, RocksDB will [CompactRange() all the to-be-migrate data into a couple L0 files](https://github.com/facebook/rocksdb/blob/main/utilities/option_change_migration/option_change_migration.cc#L164-L169) to avoid dropping all the data upon migration finishes when the migrated data is larger than max_table_files_size. This is achieved by first compacting all the data into a couple non-L0 files and refitting those files from non-L0 to L0 if needed. In that way, only some data instead of all data will be dropped immediately after migration to FIFO with a max_table_files_size.
- Since this type of refitting behavior is disallowed from now on, we won't do this trick anymore and explicitly state such risk in API comment.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12481

Test Plan:
- New UT
- Modified UT

Reviewed By: cbi42

Differential Revision: D55351178

Pulled By: hx235

fbshipit-source-id: 9d8854f2f81d7e8aff859c3a4e53b7d688048e80
2024-03-29 10:52:36 -07:00
Changyu Bi 3d5be596a5 Fix a bug in iterator with UDT + `ReadOptions::pin_data` (#12451)
Summary:
with https://github.com/facebook/rocksdb/issues/12414 enabling `ReadOptions::pin_data`, this bug surfaced as corrupted per key-value checksum during crash test. `saved_key_.GetUserKey()` could be pinned user key, so DBIter should not overwrite it.

In one case, it only surfaces when iterator skips many keys of the same user key. To stress that code path, this PR also added `max_sequential_skip_in_iterations` to crash test.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12451

Test Plan:
- Set ReadOptions::pin_data to true, the bug can be reproed quickly with `./db_stress --persist_user_defined_timestamps=1 --user_timestamp_size=8 --writepercent=35 --delpercent=4 --delrangepercent=1 --iterpercent=20 --nooverwritepercent=1 --prefix_size=8 --prefixpercent=10 --readpercent=30 --memtable_protection_bytes_per_key=8 --block_protection_bytes_per_key=2 --clear_column_family_one_in=0`.
    - Set max_sequential_skip_in_iterations to 1 for the other occurrence of the bug.

Reviewed By: jowlyzhang

Differential Revision: D55003766

Pulled By: cbi42

fbshipit-source-id: 23e1049129456684dafb028b6132b70e0afc07fb
2024-03-18 09:05:11 -07:00
Hui Xiao fa4978c566 Re-suppress tolerable manual compaction stress test failures (#12437)
Summary:
**Context/Summary:**
Previously manual compaction stress test failures won't terminate stress test. https://github.com/facebook/rocksdb/pull/12414 made more manual compaction failures terminate the stress test for signal boosting. A downside to that PR: some tolerable manual compaction stress test failures also unnecessarily terminate stress test.

Ideally we should exclude exactly those tolerable errors (left as a TODO) from being able to terminate. For now we approximate those errors by Aborted(), InvalidArgument(), NotSupported() etc. It's still an improvement to pre-https://github.com/facebook/rocksdb/pull/12414 situation.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12437

Test Plan: - No more tolerable manual compaction stress test failures terminating stress test.

Reviewed By: cbi42

Differential Revision: D54913010

Pulled By: hx235

fbshipit-source-id: c43fa79d8f9c1c8b4f8786f8f46508b0ad619a9e
2024-03-14 14:50:56 -07:00
Hui Xiao 30243c6573 Add missing db crash options (#12414)
Summary:
**Context/Summary:**
We are doing a sweep in all public options, including but not limited to the `Options`, `Read/WriteOptions`, `IngestExternalFileOptions`, cache options.., to find and add the uncovered ones into db crash. The options included in this PR require minimum changes to db crash other than adding the options themselves.

A bonus change: to surface new issues by improved coverage in stderror, we decided to fail/terminate crash test for manual compactions (CompactFiles, CompactRange()) on meaningful errors. See https://github.com/facebook/rocksdb/pull/12414/files#diff-5c4ced6afb6a90e27fec18ab03b2cd89e8f99db87791b4ecc6fa2694284d50c0R2528-R2532, https://github.com/facebook/rocksdb/pull/12414/files#diff-5c4ced6afb6a90e27fec18ab03b2cd89e8f99db87791b4ecc6fa2694284d50c0R2330-R2336 for more.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12414

Test Plan:
- Run `python3 ./tools/db_crashtest.py --simple blackbox` for 10 minutes to ensure no trivial failure
- Run `python3 tools/db_crashtest.py --simple blackbox --compact_files_one_in=1 --compact_range_one_in=1 --read_fault_one_in=1 --write_fault_one_in=1 --interval=50` for a while to ensure the bonus change does not result in trivial crash/termination of stress test

Reviewed By: ajkr, jowlyzhang, cbi42

Differential Revision: D54691774

Pulled By: hx235

fbshipit-source-id: 50443dfb6aaabd8e24c79a2e42b68c6de877be88
2024-03-12 17:24:12 -07:00
Peter Dillinger d780e7a561 Remove `bottommost_temperature` (#12389)
Summary:
deprecated option already replaced by `last_level_temperature`. (Keeping recognition of the option in old options files.)

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12389

Test Plan: tests updated

Reviewed By: jowlyzhang, cbi42

Differential Revision: D54267946

Pulled By: pdillinger

fbshipit-source-id: 65c49b15e7394829c1f3b44edd4179d2daff6017
2024-02-27 14:48:00 -08:00
Andrew Kryczka 8e29f243c9 No filesystem reads during `Merge()` writes (#12365)
Summary:
This occasional filesystem read in the write path has caused user pain. It doesn't seem very useful considering it only limits one component's merge chain length, and only helps merge uncached (i.e., infrequently read) values. This PR proposes allowing `max_successive_merges` to be exceeded when the value cannot be read from in-memory components. I included a rollback flag (`strict_max_successive_merges`) just in case.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12365

Test Plan:
"rocksdb.block.cache.data.add" is number of data blocks read from filesystem. Since the benchmark is write-only, compaction is disabled, and flush doesn't read data blocks, any nonzero value means the user write issued the read.

```
$ for s in false true; do echo -n "strict_max_successive_merges=$s: " && ./db_bench -value_size=64 -write_buffer_size=131072 -writes=128 -num=1 -benchmarks=mergerandom,flush,mergerandom -merge_operator=stringappend -disable_auto_compactions=true -compression_type=none -strict_max_successive_merges=$s -max_successive_merges=100 -statistics=true |& grep 'block.cache.data.add COUNT' ; done
strict_max_successive_merges=false: rocksdb.block.cache.data.add COUNT : 0
strict_max_successive_merges=true: rocksdb.block.cache.data.add COUNT : 1
```

Reviewed By: hx235

Differential Revision: D53982520

Pulled By: ajkr

fbshipit-source-id: e40f761a60bd601f232417ac0058e4a33ee9c0f4
2024-02-21 13:15:27 -08:00
Changyu Bi 42a8e583c9 Print zstd warning to stdout in stress test (#12338)
Summary:
so the stress test does not fail.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12338

Reviewed By: jaykorean

Differential Revision: D53542941

Pulled By: cbi42

fbshipit-source-id: 83b2eb3cb5cc4c5a268da386c22c4aadeb039a74
2024-02-07 14:17:51 -08:00
Peter Dillinger 54cb9c77d9 Prefer static_cast in place of most reinterpret_cast (#12308)
Summary:
The following are risks associated with pointer-to-pointer reinterpret_cast:
* Can produce the "wrong result" (crash or memory corruption). IIRC, in theory this can happen for any up-cast or down-cast for a non-standard-layout type, though in practice would only happen for multiple inheritance cases (where the base class pointer might be "inside" the derived object). We don't use multiple inheritance a lot, but we do.
* Can mask useful compiler errors upon code change, including converting between unrelated pointer types that you are expecting to be related, and converting between pointer and scalar types unintentionally.

I can only think of some obscure cases where static_cast could be troublesome when it compiles as a replacement:
* Going through `void*` could plausibly cause unnecessary or broken pointer arithmetic. Suppose we have
`struct Derived: public Base1, public Base2`.  If we have `Derived*` -> `void*` -> `Base2*` -> `Derived*` through reinterpret casts, this could plausibly work (though technical UB) assuming the `Base2*` is not dereferenced. Changing to static cast could introduce breaking pointer arithmetic.
* Unnecessary (but safe) pointer arithmetic could arise in a case like `Derived*` -> `Base2*` -> `Derived*` where before the Base2 pointer might not have been dereferenced. This could potentially affect performance.

With some light scripting, I tried replacing pointer-to-pointer reinterpret_casts with static_cast and kept the cases that still compile. Most occurrences of reinterpret_cast have successfully been changed (except for java/ and third-party/). 294 changed, 257 remain.

A couple of related interventions included here:
* Previously Cache::Handle was not actually derived from in the implementations and just used as a `void*` stand-in with reinterpret_cast. Now there is a relationship to allow static_cast. In theory, this could introduce pointer arithmetic (as described above) but is unlikely without multiple inheritance AND non-empty Cache::Handle.
* Remove some unnecessary casts to void* as this is allowed to be implicit (for better or worse).

Most of the remaining reinterpret_casts are for converting to/from raw bytes of objects. We could consider better idioms for these patterns in follow-up work.

I wish there were a way to implement a template variant of static_cast that would only compile if no pointer arithmetic is generated, but best I can tell, this is not possible. AFAIK the best you could do is a dynamic check that the void* conversion after the static cast is unchanged.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12308

Test Plan: existing tests, CI

Reviewed By: ltamasi

Differential Revision: D53204947

Pulled By: pdillinger

fbshipit-source-id: 9de23e618263b0d5b9820f4e15966876888a16e2
2024-02-07 10:44:11 -08:00
Jay Huh 0d68aff3a1 StressTest - Move some stderr messages to stdout (#12304)
Summary:
Moving some of the messages that we print out in `stderr` to `stdout` to make `stderr` more strictly related to errors.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12304

Test Plan:
```
$> python3 tools/db_crashtest.py blackbox --simple --max_key=25000000 --write_buffer_size=4194304
```

**Before**
```
...
stderr:
WARNING: prefix_size is non-zero but memtablerep != prefix_hash
Error : jewoongh injected test error This is not a real failure.
Verification failed :(
```

**After**

No longer seeing the `WARNING: prefix_size is non-zero but memtablerep != prefix_hash` message in stderr, but still appears in stdout.

```
WARNING: prefix_size is non-zero but memtablerep != prefix_hash
Integrated BlobDB: blob files enabled 0, min blob size 0, blob file size 268435456, blob compression type NoCompression, blob GC enabled 0, cutoff 0.250000, force threshold 1.000000, blob compaction readahead size 0, blob file starting level 0
Integrated BlobDB: blob cache disabled
DB path: [/tmp/jewoongh/rocksdb_crashtest_blackboxzztp281q]
(Re-)verified 0 unique IDs
2024/01/29-11:57:51  Initializing worker threads
Crash-recovery verification passed :)
2024/01/29-11:57:58  Starting database operations
2024/01/29-11:57:58  Starting verification
Stress Test : 245.167 micros/op 10221 ops/sec
            : Wrote 0.00 MB (0.10 MB/sec) (16% of 6 ops)
            : Wrote 1 times
            : Deleted 0 times
            : Single deleted 0 times
            : 4 read and 0 found the key
            : Prefix scanned 0 times
            : Iterator size sum is 0
            : Iterated 3 times
            : Deleted 0 key-ranges
            : Range deletions covered 0 keys
            : Got errors 0 times
            : 0 CompactFiles() succeed
            : 0 CompactFiles() did not succeed

stderr:
Error : jewoongh injected test error This is not a real failure.
Error : jewoongh injected test error This is not a real failure.
Error : jewoongh injected test error This is not a real failure.
Verification failed :(
```

Reviewed By: akankshamahajan15

Differential Revision: D53193587

Pulled By: jaykorean

fbshipit-source-id: 40d59f4c993c5ce043c571a207ccc9b74a0180c6
2024-01-29 12:52:59 -08:00
Yu Zhang c4228abdc0 Fix backup/checkpoint stress test failure (#12227)
Summary:
This PR fixes this type of stress test failure that could happen in either checkpoint or backup. Example failure messages are like this:

`Failure in a backup/restore operation with: Corruption: 0x00000000000001D5000000000000012B00000000000000FD exists in original db but not in restore`

`A checkpoint operation failed with: Corruption: 0x0000000000000365000000000000012B0000000000000067 exists in original db but not in checkpoint /...`

The internal task has an example test command to quickly reproduce this type of error.

The common symptom of these test failures are these expected keys do not exist in the original db either. The root cause is `TestCheckpoint` and `TestBackupRestore` both use the expected state as a proxy for the state of the original db when it comes to check a key's existence. 0758271d51/db_stress_tool/db_stress_test_base.cc (L1838)

This `ExpectedState::Exists` API returns true if a key has a pending write, such as a pending put. In usual case, this pending put should either soon materialize to an actual write when `PendingExpectedValue::Commit` is called to reflect a successful write to the DB, or test should be safely terminated if write to DB fails. All of which happens while a key is locked. So checkpoint and backup usually won't see the discrepancy between db and expected state caused by pending writes. However, the external file ingestion test currently has a path that will proceed the test after a failed ingestion caused by injected errors, leaving the pending put in the expected state. 0758271d51/db_stress_tool/no_batched_ops_stress.cc (L1577-L1589)

I think a proper and future proof fix for this is to explicitly rollback a pending state when a db write operation failed so that expected state do not diverge from db in the first place. I added a `PendingExpectedValue::Rollback` API so that we don't implicitly depend on thread termination to prevent test failures. Another place that could cause same divergence as external file ingestion is `PreloadDbAndReopenAsReadOnly`.
0758271d51/db_stress_tool/db_stress_test_base.cc (L616-L619)

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12227

Reviewed By: hx235

Differential Revision: D52705470

Pulled By: jowlyzhang

fbshipit-source-id: b21586b037caeeba29a2cff8c2fdc6f1d0bda9cf
2024-01-16 13:28:51 -08:00
Yu Zhang c2ab4e754b Add initial support to stress test persist_user_defined_timestamps (#12124)
Summary:
This PR adds initial stress testing for the user-defined timestamps in memtable only feature. Each flavor of the `*_ts` crash test get a 1 in 3 chance to run with timestamps not persisted, this setting is initialized once and kept consistent across the following re-runs.

This initial stress test included these things besides disabling incompatible feature combinations to make the test run more stably:
1) It currently only run test methods that validates db state with expected state. Not the ones that validate db state by comparing result from one API to another API. Such as `TestMultiGet` (compared with `Get`), similarly `TestMultiGetEntity`, `TestIterate` (compare src iterator to a control iterator). Due to timestamps being removed, results from one API to another API is not directly comparable as it is now. More test logic to handle that need to be added, will do that in a follow up.

2) Even when comparing db state to expected state, sometimes the db can receive `InvalidArgument` too due to timestamps getting flushed and removed. Added some logic to handle that.

3) When timestamps are not persisted, we don't try to read with older timestamp. Since that's making it easier to get `InvalidArgument`. And this capability is not yet needed by our customer so it's disabled for now.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12124

Test Plan: running multiple flavor of this test on continuous run for sometime before checkin

Reviewed By: ltamasi

Differential Revision: D51916267

Pulled By: jowlyzhang

fbshipit-source-id: 3f3eb5f9618d05d296062820e0ef5cb8edc7c2b2
2023-12-12 09:35:29 -08:00
Yu Zhang ba8fa0f546 internal_repo_rocksdb (4372117296613874540) (#12117)
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/12117

Reviewed By: ajkr

Differential Revision: D51745846

Pulled By: jowlyzhang

fbshipit-source-id: 51c806a484b3b43d174b06d2cfe9499191d09914
2023-12-04 11:17:32 -08:00
Changyu Bi 8505b26db1 Fix stress test error message for black/whitebox test to catch failures (#12039)
Summary:
black/whitebox crash test relies on error/fail keyword in stderr to catch stress test failure. If a db_stress run prints an error message without these keyword, and then is killed before it graceful exits and prints out "Verification failed" here (2648e0a747/db_stress_tool/db_stress_driver.cc (L256)), the error won't be caught. This is more likely to happen if db_stress is printing a stack trace. This PR fixes some error messages. Ideally in the future we should not rely on searching for keywords in stderr to determine failed stress tests.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12039

Test Plan:
```
Added the following change on top of this PR to simulate exit without relevant keyword:

@@ -1586,6 +1587,8 @@ class NonBatchedOpsStressTest : public StressTest {
     assert(thread);
     assert(!rand_column_families.empty());
     assert(!rand_keys.empty());
+    fprintf(stderr, "Inconsistency");
+    thread->shared->SafeTerminate();

python3 ./tools/db_crashtest.py blackbox --simple --verify_iterator_with_expected_state_one_in=1 --interval=10

will print a stack trace but continue to run db_stress.
```

Reviewed By: jaykorean

Differential Revision: D50960076

Pulled By: cbi42

fbshipit-source-id: 5c60a1be04ce4a43adbd33f040d54434f2ae24c9
2023-11-03 09:53:22 -07:00
Yu Zhang a42910537d Save the correct user comparator name in OPTIONS file (#12037)
Summary:
I noticed the user comparator name in OPTIONS file can be incorrect when working on a recent stress test failure. The name of the comparator retrieved via the "Comparator::GetRootComparator" API is saved in OPTIONS file as the user comparator. The intention was to get the user comparator wrapped in the internal comparator. However `ImmutableCFOptions.user_comparator` has always been a user comparator of type `Comparator`. The corresponding `GetRootComparator` API is also defined only for user comparator type `Comparator`, not the internal key comparator type `InternalKeyComparator`.

For built in comparator `BytewiseComparator` and `ReverseBytewiseComparator`, there is no difference between `Comparator::Name` and `Comparator::GetRootComparator::Name` because these built in comparators' root comparator is themselves. However, for built in comparator `BytewiseComparatorWithU64Ts` and `ReverseBytewiseComparatorWithU64Ts`, there are differences. So this change update the logic to persist the user comparator's name, not its root comparator's name.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12037

Test Plan:
The restore flow in stress test, which relies on converting Options object to string and back to Options object is updated to help validate comparator object can be correctly serialized and deserialized with the OPTIONS file mechanism

Updated unit test to use a comparator that has a root comparator that is not itself.

Reviewed By: cbi42

Differential Revision: D50909750

Pulled By: jowlyzhang

fbshipit-source-id: 9086d7135c7a6f4b5565fb47fce194ea0a024f52
2023-11-02 13:27:59 -07:00
Yu Zhang 0b057a7acc Initialize comparator explicitly in PrepareOptionsForRestoredDB() (#12034)
Summary:
This is to fix below error seeing in stress test:
```
Failure in DB::Open in backup/restore with: Invalid argument: Cannot open a column family and disable user-defined timestamps feature if its existing persist_user_defined_timestamps flag is not false.
```

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12034

Reviewed By: cbi42

Differential Revision: D50860689

Pulled By: jowlyzhang

fbshipit-source-id: ebc6cf0a75caa43d3d3bd58e3d5c2ac754cc637c
2023-10-31 16:10:48 -07:00
Changyu Bi 2818a74b95 Initialize merge operator explicitly in PrepareOptionsForRestoredDB() (#12033)
Summary:
We are seeing the following stress test failure: `Failure in DB::Get in backup/restore with: Invalid argument: merge_operator is not properly initialized. Verification failed: Backup/restore failed: Invalid argument: merge_operator is not properly initialized.`. The reason is likely that `GetColumnFamilyOptionsFromString()` does not set merge operator if it's a customized merge operator. Fixing it by initializing merge operator explicitly.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12033

Test Plan:
this repro gives the error consistently before this PR
```
./db_stress --acquire_snapshot_one_in=10000 --adaptive_readahead=0 --allow_concurrent_memtable_write=1 --allow_data_in_errors=True --async_io=0 --atomic_flush=1 --auto_readahead_size=1 --avoid_flush_during_recovery=0 --avoid_unnecessary_blocking_io=1 --backup_max_size=1048576000000 --backup_one_in=50 --batch_protection_bytes_per_key=8 --block_protection_bytes_per_key=2 --block_size=16384 --bloom_before_level=2147483646 --bloom_bits=31.014388066505518 --bottommost_compression_type=lz4hc --bottommost_file_compaction_delay=0 --bytes_per_sync=0 --cache_index_and_filter_blocks=0 --cache_size=33554432 --cache_type=fixed_hyper_clock_cache --charge_compression_dictionary_building_buffer=1 --charge_file_metadata=1 --charge_filter_construction=0 --charge_table_reader=1 --checkpoint_one_in=1000000 --checksum_type=kxxHash --clear_column_family_one_in=0 --column_families=1 --compact_files_one_in=1000000 --compact_range_one_in=1000000 --compaction_pri=3 --compaction_readahead_size=0 --compaction_ttl=10 --compressed_secondary_cache_ratio=0.0 --compressed_secondary_cache_size=0 --compression_checksum=1 --compression_max_dict_buffer_bytes=4095 --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 --data_block_index_type=0 --db=/dev/shm/rocksdb_test/rocksdb_crashtest_blackbox --db_write_buffer_size=0 --delpercent=4 --delrangepercent=1 --destroy_db_initially=1 --detect_filter_construct_corruption=0 --disable_wal=1 --enable_compaction_filter=0 --enable_pipelined_write=0 --enable_thread_tracking=0 --expected_values_dir=/dev/shm/rocksdb_test/rocksdb_crashtest_expected --fail_if_options_file_error=1 --fifo_allow_compaction=0 --file_checksum_impl=xxh64 --flush_one_in=1000000 --format_version=2 --get_current_wal_file_one_in=0 --get_live_files_one_in=1000000 --get_property_one_in=1000000 --get_sorted_wal_files_one_in=0 --index_block_restart_interval=10 --index_type=2 --ingest_external_file_one_in=0 --initial_auto_readahead_size=16384 --iterpercent=10 --key_len_percent_dist=1,30,69 --level_compaction_dynamic_level_bytes=1 --lock_wal_one_in=1000000 --long_running_snapshots=1 --manual_wal_flush_one_in=0 --mark_for_compaction_one_file_in=10 --max_auto_readahead_size=524288 --max_background_compactions=1 --max_bytes_for_level_base=67108864 --max_key=100 --max_key_len=3 --max_manifest_file_size=1073741824 --max_write_batch_group_size_bytes=1048576 --max_write_buffer_number=3 --max_write_buffer_size_to_maintain=8388608 --memtable_max_range_deletions=1000 --memtable_prefix_bloom_size_ratio=0 --memtable_protection_bytes_per_key=2 --memtable_whole_key_filtering=0 --memtablerep=skip_list --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=-1 --open_metadata_write_fault_one_in=0 --open_read_fault_one_in=0 --open_write_fault_one_in=16 --ops_per_thread=100000000 --optimize_filters_for_memory=1 --paranoid_file_checks=0 --partition_filters=0 --partition_pinning=0 --pause_background_one_in=1000000 --periodic_compaction_seconds=0 --prefix_size=-1 --prefixpercent=0 --prepopulate_block_cache=1 --preserve_internal_time_seconds=0 --progress_reports=0 --read_fault_one_in=0 --readahead_size=0 --readpercent=50 --recycle_log_file_num=0 --reopen=0 --secondary_cache_fault_one_in=0 --set_options_one_in=0 --snapshot_hold_ops=100000 --sst_file_manager_bytes_per_sec=0 --sst_file_manager_bytes_per_truncate=0 --stats_dump_period_sec=0 --subcompactions=1 --sync=0 --sync_fault_injection=1 --target_file_size_base=16777216 --target_file_size_multiplier=1 --test_batches_snapshots=0 --top_level_index_pinning=0 --unpartitioned_pinning=1 --use_direct_io_for_flush_and_compaction=0 --use_direct_reads=0 --use_full_merge_v1=0 --use_get_entity=0 --use_merge=1 --use_multi_get_entity=0 --use_multiget=1 --use_put_entity_one_in=10 --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_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=524288 --wal_compression=zstd --write_buffer_size=33554432 --write_dbid_to_manifest=0 --write_fault_one_in=0 --writepercent=35
```

Reviewed By: hx235

Differential Revision: D50825558

Pulled By: cbi42

fbshipit-source-id: 8468dc0444c112415a515af8291ef3abec8a42de
2023-10-31 07:39:41 -07:00
Hui Xiao 212b5bf826 Deep-copy Options in restored db for stress test to avoid race with SetOptions() (#12015)
Summary:
**Context**
DB open will persist the `Options` in memory to options file and verify the file right after the write. The verification is done by comparing the options from parsing the written options file against the `Options` object in memory. Upon inconsistency, corruption such as https://github.com/facebook/rocksdb/blob/main/options/options_parser.cc#L725 will be returned.

This verification assumes the `Options` object in memory is not changed from before the write till the verification. This assumption can break during [opening the restored db in stress test](0f141352d8/db_stress_tool/db_stress_test_base.cc (L1784-L1799)).

This [line](0f141352d8/db_stress_tool/db_stress_test_base.cc (L1770)) makes it shares some pointer options (e.g, `std::shared_ptr<const FilterPolicy> filter_policy`) with other threads (e.g, SetOptions()) in db stress.

And since https://github.com/facebook/rocksdb/pull/11838, filter_policy's field `bloom_before_level ` has now been mutable by SetOptions(). Therefore we started to see stress test failure like below:

```
Failure in DB::Open in backup/restore with: IO error: DB::Open() failed --- Unable to persist Options file: IO error: Unable to persist options.: Corruption: [RocksDBOptionsParser]:failed the verification on BlockBasedTable::: filter_policy.id

Verification failed: Backup/restore failed: IO error: DB::Open() failed --- Unable to persist Options file: IO error: Unable to persist options.: Corruption: [RocksDBOptionsParser]:failed the verification on BlockBasedTable::: filter_policy.id

db_stress: db_stress_tool/db_stress_test_base.cc:479: void rocksdb::StressTest::ProcessStatus(rocksdb::SharedState*, std::string, rocksdb::Status) const: Assertion `false' failed.
```

**Summary**
This PR uses "deep copy" of the `options_` by CreateXXXFromString() to avoid sharing pointer options.

**Test plan**
Run the below db stress command that failed before this PR and pass after
```
./db_stress --column_families=1 --threads=2 --preserve_unverified_changes=0 --acquire_snapshot_one_in=10000 --adaptive_readahead=0 --allow_data_in_errors=True --async_io=0 --auto_readahead_size=1 --avoid_flush_during_recovery=0 --avoid_unnecessary_blocking_io=0 --backup_max_size=104857600 --backup_one_in=10 --batch_protection_bytes_per_key=0 --block_protection_bytes_per_key=1 --block_size=16384 --bloom_before_level=2147483646 --bloom_bits=0 --bottommost_compression_type=disable --bottommost_file_compaction_delay=86400 --bytes_per_sync=0 --cache_index_and_filter_blocks=0 --cache_size=33554432 --cache_type=tiered_auto_hyper_clock_cache --charge_compression_dictionary_building_buffer=0 --charge_file_metadata=0 --charge_filter_construction=0 --charge_table_reader=1 --checkpoint_one_in=1000000 --checksum_type=kXXH3 --clear_column_family_one_in=0 --compact_files_one_in=1000000 --compact_range_one_in=1000000 --compaction_pri=2 --compaction_readahead_size=0 --compaction_ttl=0 --compressed_secondary_cache_ratio=0.3333333333333333 --compressed_secondary_cache_size=0 --compression_checksum=1 --compression_max_dict_buffer_bytes=0 --compression_max_dict_bytes=0 --compression_parallel_threads=1 --compression_type=lz4 --compression_use_zstd_dict_trainer=1 --compression_zstd_max_train_bytes=0 --continuous_verification_interval=0 --data_block_index_type=1 --db=/dev/shm/rocksdb_test/rocksdb_crashtest_blackbox --db_write_buffer_size=8388608 --delpercent=4 --delrangepercent=1 --destroy_db_initially=1 --detect_filter_construct_corruption=0 --disable_wal=0 --enable_compaction_filter=0 --enable_pipelined_write=0 --enable_thread_tracking=0 --expected_values_dir=/dev/shm/rocksdb_test/rocksdb_crashtest_expected --fail_if_options_file_error=1 --fifo_allow_compaction=1 --file_checksum_impl=big --flush_one_in=1000000 --format_version=2 --get_current_wal_file_one_in=0 --get_live_files_one_in=1000000 --get_property_one_in=1000000 --get_sorted_wal_files_one_in=0 --index_block_restart_interval=14 --index_type=0 --ingest_external_file_one_in=0 --initial_auto_readahead_size=524288 --iterpercent=10 --key_len_percent_dist=1,30,69 --level_compaction_dynamic_level_bytes=1 --lock_wal_one_in=1000000 --long_running_snapshots=1 --manual_wal_flush_one_in=1000 --mark_for_compaction_one_file_in=0 --max_auto_readahead_size=0 --max_background_compactions=20 --max_bytes_for_level_base=10485760 --max_key=2500 --max_key_len=3 --max_manifest_file_size=1073741824 --max_write_batch_group_size_bytes=16777216 --max_write_buffer_number=3 --max_write_buffer_size_to_maintain=4194304 --memtable_max_range_deletions=0 --memtable_prefix_bloom_size_ratio=0 --memtable_protection_bytes_per_key=0 --memtable_whole_key_filtering=0 --memtablerep=skip_list --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=500000 --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_memory=0 --paranoid_file_checks=1 --partition_filters=0 --partition_pinning=2 --pause_background_one_in=1000000 --periodic_compaction_seconds=0 --prefix_size=-1 --prefixpercent=0 --prepopulate_block_cache=0 --preserve_internal_time_seconds=3600 --progress_reports=0 --read_fault_one_in=1000 --readahead_size=0 --readpercent=50 --recycle_log_file_num=0 --reopen=0 --secondary_cache_fault_one_in=0 --secondary_cache_uri= --set_options_one_in=5 --snapshot_hold_ops=100000 --sst_file_manager_bytes_per_sec=104857600 --sst_file_manager_bytes_per_truncate=1048576 --stats_dump_period_sec=600 --subcompactions=3 --sync=0 --sync_fault_injection=0 --target_file_size_base=2097152 --target_file_size_multiplier=2 --test_batches_snapshots=0 --top_level_index_pinning=2 --unpartitioned_pinning=0 --use_direct_io_for_flush_and_compaction=0 --use_direct_reads=0 --use_full_merge_v1=0 --use_get_entity=0 --use_merge=1 --use_multi_get_entity=0 --use_multiget=1 --use_put_entity_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_db_one_in=100000 --verify_file_checksums_one_in=1000000 --verify_sst_unique_id_in_manifest=1 --wal_bytes_per_sync=524288 --wal_compression=zstd --write_buffer_size=4194304 --write_dbid_to_manifest=1 --write_fault_one_in=0 --writepercent=35
```

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12015

Reviewed By: pdillinger

Differential Revision: D50666136

Pulled By: hx235

fbshipit-source-id: 804acc23aecb4eedfe5c44f732e86291f2420b2b
2023-10-27 17:07:39 -07:00
anand76 20b4f1356e Enable write fault injection in db_stress (#11924)
Summary:
This PR depends on https://github.com/facebook/rocksdb/issues/11879 . Enable write fault injection for the basic whitebox, blackbox, and cf_consistency modes. For other test modes like multiops_txn, best_efforts_recovery etc., leave it disabled for now until we can do more testing.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11924

Reviewed By: ajkr

Differential Revision: D50178252

Pulled By: anand1976

fbshipit-source-id: 5794f81c14cded1eb28762b2de818dfff1c1a34c
2023-10-11 11:28:00 -07:00
anand76 5b11f5a3a2 Add TieredCache and compressed cache capacity change to db_stress (#11935)
Summary:
Add `TieredCache` to the cache types tested by db_stress. Also add compressed secondary cache capacity change, and `WriteBufferManager` integration with `TieredCache` for memory charging.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11935

Test Plan: Run whitebox/blackbox crash tests locally

Reviewed By: akankshamahajan15

Differential Revision: D50135365

Pulled By: anand1976

fbshipit-source-id: 7d73ed00c00a0953d86e49f35cce6bd550ba00f1
2023-10-10 13:12:18 -07:00
Andrew Kryczka 8a9cfd5292 Make stopped writes block on recovery (#11879)
Summary:
Relaxed the constraints for blocking when writes are stopped. When a recovery is already being attempted, we might as well let `!no_slowdown` writes wait on it in case it succeeds. This makes the user-visible behavior consistent across recovery flush and non-recovery flush.

This enables `db_stress` to inject retryable (soft) flush read errors without having to handle user write failures. I changed `db_stress` a bit to permit injected errors in much more foreground operations as more admin operations (like `GetLiveFiles()`) can fail on a retryable error during flush.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11879

Reviewed By: anand1976

Differential Revision: D49571196

Pulled By: ajkr

fbshipit-source-id: 5d516d6faf20d2c6bfe0594ab4f2706bca6d69b0
2023-10-10 06:29:01 -07:00
akankshamahajan 97f6f475bc Fix various failures in auto_readahead_size (#11884)
Summary:
1. **Error** in TestIterateAgainstExpected API - `Assertion index < pre_read_expected_values.size() && index < post_read_expected_values.size() failed.`
 **Fix** - `Prev` op is not supported with `auto_readahead_size`. So added support to Reseek in db_iter, if Prev is called. In BlockBasedTableIterator, index_iter_ already moves forward. So there is no way to do Prev from BlockBasedTableIterator.

2. **Error** - `void rocksdb::BlockBasedTableIterator::BlockCacheLookupForReadAheadSize(uint64_t, size_t, size_t&): Assertion index_iter_->value().handle.offset() == offset`
   **Fix** - Remove prefetch_buffer to be used when uncompressed dict is read.

3. ** Error in TestPrefixScan API - `db_stress: db/db_iter.cc:369: bool rocksdb::DBIter::FindNextUserEntryInternal(bool, const rocksdb::Slice*): Assertion !skipping_saved_key || CompareKeyForSkip(ikey_.user_key, saved_key_.GetUserKey()) > 0 failed.
Received signal 6 (Aborted)
Invoking GDB for stack trace...
db_stress: table/merging_iterator.cc:1036: bool rocksdb::MergingIterator::SkipNextDeleted(): Assertion comparator_->Compare(range_tombstone_iters_[i]->start_key(), pik) <= 0 failed`
  **Fix** -  SeekPrev also calls 1) SeekPrev , 2)Seek and then 3)Prev in some cases in db_iter.cc leading to failure of Prev operation. These backward operations also call Seek.  Added direction to disable lookup once direction is backwards in BlockBasedTableIterator.cc

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11884

Test Plan: Ran various flavors of crash tests locally for the whole duration

Reviewed By: anand1976

Differential Revision: D49834201

Pulled By: akankshamahajan15

fbshipit-source-id: 9a007b4d46a48002c43dc4623a400ecf47d997fe
2023-10-02 17:47:24 -07:00
Levi Tamasi 01e2d33565 Add the wide-column aware merge API to the stress tests (#11906)
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/11906

The patch adds stress test coverage for the wide-column aware `FullMergeV3` API by implementing a new `DBStressWideMergeOperator`. This operator is similar to `PutOperator` / `PutOperatorV2` in the sense that its result is based on the last merge operand; however, the merge result can be either a plain value or a wide-column entity, depending on the value base encoded into the operand and the value of the `use_put_entity_one_in` stress test parameter. Following the same rule for merge results that we do for writes ensures that the queries issued by the validation logic receive the expected results. The new operator is used instead of `PutOperatorV2` whenever `use_put_entity_one_in` is positive. Note that the patch also makes it possible to set `use_put_entity_one_in` and `use_merge` (but not `use_full_merge_v1`) at the same time, giving `use_put_entity_one_in` precedence, so the stress test will use `PutEntity` for writes passing the `use_put_entity_one_in` check described above and `Merge` for any other writes.

Reviewed By: jaykorean

Differential Revision: D49760024

fbshipit-source-id: 3893602c3e7935381b484f4f5026f1983e3a04a9
2023-09-29 08:54:50 -07:00
akankshamahajan 3d67b5e8e5 Lookup ahead in block cache ahead to tune Readaheadsize (#11860)
Summary:
Implement block cache lookup to determine readahead_size during scans. It's enabled if auto_readahead_size, block_cache and iterate_upper_bound - all three are set.

Design -
1. Whenever there is a cache miss and FilePrefetchBuffer is called, a callback is made to determine readahead_size for that prefetching.
2. The callback iterates over index and do block cache lookup for each data block handle until existing readahead_size is reached. Then It removes the cache hit data blocks from end to calculate optimized readahead_size.
3. Since index_iter_ is moved, it stores block handles in a queue, and use that queue to get block handle instead of doing index_iter_->Next().
4. This is for Sync scans. Async scans support is in progress.

NOTE:
The issue right now is after Seek and Next, if Prev is called, there is no way to do Prev operation. index_iter_ is already pointing to a different block. So it returns "Not supported" in that case with error message - "auto tuning of readahead size is not supported with Prev op"

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11860

Test Plan:
- Added new unit test
- crash_tests
- Running scans locally to check for any regression

Reviewed By: anand1976

Differential Revision: D49548118

Pulled By: akankshamahajan15

fbshipit-source-id: f1aee409a71b4ad9e5bf3610f43edf30c6630c78
2023-09-22 18:12:08 -07:00
Changyu Bi ba5897ada8 Fix stress test failure due to write fault injections and disable write fault injection (#11859)
Summary:
This PR contains two fixes:

1. disable write fault injection since it caused several other kinds of internal stress test failures. I'll try to fix those separately before enabling it again.
2. Fix segfault like
```
https://github.com/facebook/rocksdb/issues/5  0x000000000083dc43 in rocksdb::port::Mutex::Lock (this=0x30) at internal_repo_rocksdb/repo/port/port_posix.cc:80
80	internal_repo_rocksdb/repo/port/port_posix.cc: No such file or directory.
https://github.com/facebook/rocksdb/issues/6  0x0000000000465142 in rocksdb::MutexLock::MutexLock (mu=0x30, this=<optimized out>) at internal_repo_rocksdb/repo/util/mutexlock.h:37
37	internal_repo_rocksdb/repo/util/mutexlock.h: No such file or directory.
https://github.com/facebook/rocksdb/issues/7  rocksdb::FaultInjectionTestFS::DisableWriteErrorInjection (this=0x0) at internal_repo_rocksdb/repo/utilities/fault_injection_fs.h:505
505	internal_repo_rocksdb/repo/utilities/fault_injection_fs.h: No such file or directory.
```

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11859

Test Plan: db_stress with no fault injection: `./db_stress --write_fault_one_in=0 --read_fault_one_in=0 --open_metadata_write_fault_one_in=0 --open_read_fault_one_in=0 --open_write_fault_one_in=0 --sync_fault_injection=0`

Reviewed By: jaykorean

Differential Revision: D49408247

Pulled By: cbi42

fbshipit-source-id: 0ca01f20e6e81bf52af77818b50d562ef7462165
2023-09-19 08:33:05 -07:00
Changyu Bi c90807d103 Inject retryable write IOError when writing to SST files in stress test (#11829)
Summary:
* db_crashtest.py now may set `write_fault_one_in` to 500 for blackbox and whitebox simple test.
* Error injection only applies to writing to SST files. Flush error will cause DB to pause background operations and auto-resume. Compaction error will just re-schedule later.
* File ingestion and back up tests are updated to check if the result status is due to an injected error.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11829

Test Plan:
a full round of whitebox simple and blackbox simple crash test
*  `python3 ./tools/db_crashtest.py whitebox/blackbox --simple  --write_fault_one_in=500`

Reviewed By: ajkr

Differential Revision: D49256962

Pulled By: cbi42

fbshipit-source-id: 68e0c9648d8e03bad39c7672b25d5500fc286d97
2023-09-18 16:23:26 -07:00
Peter Dillinger 1c6faf3587 Make RibbonFilterPolicy::bloom_before_level mutable (SetOptions()) (#11838)
Summary:
An internal user wants to be able to dynamically switch between Bloom and Ribbon filters, without a custom FilterPolicy. Making `filter_policy` mutable would actually make issue https://github.com/facebook/rocksdb/issues/10079 worse, because it would be a race on a pointer field, not just on scalars.

As a reasonable compromise until that is fixed, I am enabling dynamic control over Bloom vs. Ribbon choice by making
RibbonFilterPolicy::bloom_before_level mutable, and doing that safely by using an atomic.

I've also slightly tweaked the interpretation of that field so that setting it to INT_MAX really means "always Bloom."

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11838

Test Plan: unit tests added/extended. crash test updated for SetOptions call and tested under TSAN with amplified probability (lower set_options_one_in).

Reviewed By: ajkr

Differential Revision: D49296284

Pulled By: pdillinger

fbshipit-source-id: e4251c077510df9a9c719876f482448c0d15402a
2023-09-15 15:46:10 -07:00
Jay Huh cff6490bc4 Add IOActivity.kMultiGetEntity (#11842)
Summary:
- As a follow up from https://github.com/facebook/rocksdb/issues/11799, adding `Env::IOActivity::kMultiGetEntity` support to `DBImpl::MultiGetEntity()`.

## Minor Refactor
- Because both `DBImpl::MultiGet()` and `DBImpl::MultiGetEntity()` call `DBImpl::MultiGetCommon()` which later calls `DBImpl::MultiGetWithCallback()` where we check `Env::IOActivity::kMultiGet`, minor refactor was needed so that we don't check `Env::IOActivity::kMultiGet` for  `DBImpl::MultiGetEntity()`.
- I still see more areas for refactoring to avoid duplicate code of checking IOActivity and setting it when Unknown, but this will be addressed separately.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11842

Test Plan:
- Added the `ThreadStatus::OperationType::OP_MULTIGETENTITY` in `db_stress` to verify the pass-down IOActivity in a thread aligns with the actual activity the thread is doing.
```
python3 tools/db_crashtest.py blackbox --max_key=25000000 --write_buffer_size=4194304 --max_bytes_for_level_base=2097152 --target_file_size_base=2097152 --periodic_compaction_seconds=0 --use_put_entity_one_in=10 --use_get_entity=1 --duration=60 --interval=10
python3 tools/db_crashtest.py blackbox --simple --max_key=25000000 --write_buffer_size=4194304 --max_bytes_for_level_base=2097152 --target_file_size_base=2097152 --periodic_compaction_seconds=0 --use_put_entity_one_in=10 --use_get_entity=1 --duration=60 --interval=10
python3 tools/db_crashtest.py blackbox --cf_consistency --max_key=25000000 --write_buffer_size=4194304 --max_bytes_for_level_base=2097152 --target_file_size_base=2097152 --periodic_compaction_seconds=0 --use_put_entity_one_in=10 --use_get_entity=1 --duration=60 --interval=10
```

Reviewed By: ltamasi

Differential Revision: D49329575

Pulled By: jaykorean

fbshipit-source-id: 05198f1d3f92e6be3d42a3d184bacb3ab2ce6923
2023-09-15 15:34:04 -07:00
leipeng 68ce5d84f6 Add new Iterator API Refresh(const snapshot*) (#10594)
Summary:
This PR resolves https://github.com/facebook/rocksdb/issues/10487 & https://github.com/facebook/rocksdb/issues/10536, user code needs to call Refresh() periodically.

The main code change is to support range deletions. A range tombstone iterator uses a sequence number as upper bound to decide which range tombstones are effective. During Iterator refresh, this sequence number upper bound needs to be updated for all range tombstone iterators under DBIter and LevelIterator. LevelIterator may create new table iterators and range tombstone iterator during scanning, so it needs to be aware of iterator refresh. The code path that propagates this change is `db_iter_->set_sequence(read_seq)  -> MergingIterator::SetRangeDelReadSeqno() -> TruncatedRangeDelIterator::SetRangeDelReadSeqno() and LevelIterator::SetRangeDelReadSeqno()`.

This change also fixes an issue where range tombstone iterators created by LevelIterator may access ReadOptions::snapshot, even though we do not explicitly require users to keep a snapshot alive after creating an Iterator.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10594

Test Plan:
* New unit tests.
* Add Iterator::Refresh(snapshot) to stress test. Note that this change only adds tests for refreshing to the same snapshot since this is the main target use case.

TODO in a following PR:
* Stress test Iterator::Refresh() to different snapshots or no snapshot.

Reviewed By: ajkr

Differential Revision: D48456896

Pulled By: cbi42

fbshipit-source-id: 2e642c04e91235cc9542ef4cd37b3c20823bd779
2023-09-15 10:44:43 -07:00
Jay Huh f2b623bcc1 GetEntity Support for ReadOnlyDB and SecondaryDB (#11799)
Summary:
`GetEntity` API support for ReadOnly DB and Secondary DB.
- Introduced `GetImpl()` with `GetImplOptions` in `db_impl_readonly` and refactored current `Get()` logic into `GetImpl()` so that look up logic can be reused for `GetEntity()` (Following the same pattern as `DBImpl::Get()` and `DBImpl::GetEntity()`)
- Introduced `GetImpl()` with `GetImplOptions` in `db_impl_secondary` and refactored current `GetImpl()` logic. This is to make `DBImplSecondary::Get/GetEntity` consistent with `DBImpl::Get/GetEntity` and `DBImplReadOnly::Get/GetEntity`
- `GetImpl()` in `db_impl` is now virtual. both `db_impl_readonly` and `db_impl_secondary`'s `Get()` override are no longer needed since all three dbs now have the same `Get()` which calls `GetImpl()` internally.
- `GetImpl()` in `DBImplReadOnly` and `DBImplSecondary` now pass in `columns` instead of `nullptr` in lookup functions like `memtable->get()`
- Introduced `GetEntity()` API in `DBImplReadOnly` and `DBImplSecondary` which simply calls `GetImpl()` with `columns` set in `GetImplOptions`.
- Introduced `Env::IOActivity::kGetEntity` and set read_options.io_activity to `Env::IOActivity::kGetEntity` for `GetEntity()` operations (in db_impl)

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11799

Test Plan:
**Unit Tests**
- Added verification in `DBWideBasicTest::PutEntity` by Reopening DB as ReadOnly with the same setup.
- Added verification in `DBSecondaryTest::ReopenAsSecondary` by calling `PutEntity()` and `GetEntity()` on top of existing `Put()` and `Get()`
- `make -j64 check`

**Crash Tests**
- `python3 tools/db_crashtest.py blackbox --max_key=25000000 --write_buffer_size=4194304 --max_bytes_for_level_base=2097152 --target_file_size_base=2097152 --periodic_compaction_seconds=0 --use_put_entity_one_in=10 --use_get_entity=1 --duration=60 --inter
val=10`
- `python3 tools/db_crashtest.py blackbox --simple --max_key=25000000 --write_buffer_size=4194304 --max_bytes_for_level_base=2097152 --target_file_size_base=2097152 --periodic_compaction_seconds=0 --use_put_entity_one_in=10 --use_get_entity=1 `
- `python3 tools/db_crashtest.py blackbox --cf_consistency --max_key=25000000 --write_buffer_size=4194304 --max_bytes_for_level_base=2097152 --target_file_size_base=2097152 --periodic_compaction_seconds=0 --use_put_entity_one_in=10 --use_get_entity=1 --duration=60 --inter
val=10`

Reviewed By: ltamasi

Differential Revision: D49037040

Pulled By: jaykorean

fbshipit-source-id: a0648253ded6e91af7953de364ed3c6bf163626b
2023-09-15 08:30:44 -07:00
Andrew Kryczka 392d6957cd Added compaction read errors to `db_stress` (#11789)
Summary:
- Fixed misspellings of "inject"
- Made user read errors retryable when `FLAGS_inject_error_severity == 1`
- Added compaction read errors when `FLAGS_read_fault_one_in > 0`. These are always retryable so that the DB will keep accepting writes
- Reenabled setting `compaction_readahead_size` in crash test. The reason for disabling it was to "keep the test clean", which is not a good enough reason to skip testing it

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11789

Test Plan:
With https://github.com/facebook/rocksdb/issues/11782 reverted, reproduced the bug:
- Build: `make -j56 db_stress`
- Command: `TEST_TMPDIR=/dev/shm python3 tools/db_crashtest.py blackbox --simple --write_buffer_size=524288 --target_file_size_base=524288 --max_bytes_for_level_base=2097152 --interval=10 --max_key=1000000`
- Output:
```
stderr has error message:
***put or merge error: Corruption: Compaction number of input keys does not match number of keys processed.***
```

Reviewed By: cbi42

Differential Revision: D48939994

Pulled By: ajkr

fbshipit-source-id: a1efb799efecdfd5d9cfd185e4a6321db8fccfbb
2023-09-05 10:41:29 -07:00
Akanksha Mahajan 6353c6e2fb Add new experimental ReadOption auto_readahead_size to db_bench and db_stress (#11729)
Summary:
Same as title

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11729

Test Plan: make crash_test -j32

Reviewed By: anand1976

Differential Revision: D48534820

Pulled By: akankshamahajan15

fbshipit-source-id: 3a2a28af98dfad164b82ddaaf9fddb94c53a652e
2023-08-24 14:58:27 -07:00
Fuat Basik bc448e9c89 Run db_stress for final time to ensure un-interrupted validation (#11592)
Summary:
In blackbox tests, db_stress command always run with timeout. Timeout can happen during validation, leaving some of the keys not checked. Since key validation is done in order, it is quite likely that keys those are towards to the end of the set are never validated. This PR adds a final execution, without timeout, to ensure validation is executed for all keys, at least once.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11592

Reviewed By: cbi42

Differential Revision: D48003998

Pulled By: hx235

fbshipit-source-id: 72543475a932f12cf0f57534b7e3b6e07e87080f
2023-08-23 15:24:23 -07:00
Changyu Bi 5e0584bd73 Do not drop unsynced data during reopen in stress test (#11731)
Summary:
Currently the stress test does not support restoring expected state (to a specific sequence number) when there is unsynced data loss during the reopen phase. This causes a few internal stress test failure with errors like inconsistent value. This PR disables dropping unsynced data during reopen to avoid failures due to this issue. We can re-enable later after we decide to support unsynced data loss during DB reopen in stress test.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11731

Test Plan:
* Running this test a few times can fail for inconsistent value before this change
```
./db_stress --acquire_snapshot_one_in=10000 --adaptive_readahead=1 --allow_concurrent_memtable_write=1 --allow_data_in_errors=True --async_io=0 --avoid_flush_during_recovery=0 --avoid_unnecessary_blocking_io=0 --backup_max_size=104857600 --backup_one_in=0 --batch_protection_bytes_per_key=0 --block_protection_bytes_per_key=8 --block_size=16384 --bloom_bits=20.57166126835524 --bottommost_compression_type=disable --bytes_per_sync=262144 --cache_index_and_filter_blocks=1 --cache_size=8388608 --cache_type=auto_hyper_clock_cache --charge_compression_dictionary_building_buffer=1 --charge_file_metadata=1 --charge_filter_construction=0 --charge_table_reader=1 --checkpoint_one_in=0 --checksum_type=kxxHash --clear_column_family_one_in=0 --column_families=1 --compact_files_one_in=1000000 --compact_range_one_in=1000000 --compaction_pri=3 --compaction_style=1 --compaction_ttl=100 --compression_max_dict_buffer_bytes=0 --compression_max_dict_bytes=0 --compression_parallel_threads=1 --compression_type=zstd --compression_use_zstd_dict_trainer=1 --compression_zstd_max_train_bytes=0 --continuous_verification_interval=0 --data_block_index_type=0 --db=/dev/shm/rocksdb_test/rocksdb_crashtest_whitebox --db_write_buffer_size=0 --delpercent=4 --delrangepercent=1 --destroy_db_initially=0 --detect_filter_construct_corruption=0 --disable_wal=0 --enable_compaction_filter=0 --enable_pipelined_write=1 --enable_thread_tracking=0 --expected_values_dir=/dev/shm/rocksdb_test/rocksdb_crashtest_expected --fail_if_options_file_error=1 --fifo_allow_compaction=1 --file_checksum_impl=big --flush_one_in=1000000 --format_version=3 --get_current_wal_file_one_in=0 --get_live_files_one_in=1000000 --get_property_one_in=1000000 --get_sorted_wal_files_one_in=0 --index_block_restart_interval=6 --index_type=3 --ingest_external_file_one_in=0 --initial_auto_readahead_size=16384 --iterpercent=10 --key_len_percent_dist=1,30,69 --level_compaction_dynamic_level_bytes=1 --lock_wal_one_in=1000000 --log2_keys_per_lock=10 --long_running_snapshots=1 --manual_wal_flush_one_in=1000000 --mark_for_compaction_one_file_in=10 --max_auto_readahead_size=0 --max_background_compactions=1 --max_bytes_for_level_base=67108864 --max_key=25000000 --max_key_len=3 --max_manifest_file_size=1073741824 --max_write_batch_group_size_bytes=16777216 --max_write_buffer_number=3 --max_write_buffer_size_to_maintain=0 --memtable_max_range_deletions=100 --memtable_prefix_bloom_size_ratio=0 --memtable_protection_bytes_per_key=1 --memtable_whole_key_filtering=0 --memtablerep=skip_list --min_write_buffer_number_to_merge=2 --mmap_read=0 --mock_direct_io=False --nooverwritepercent=1 --num_file_reads_for_auto_readahead=1 --open_files=-1 --open_metadata_write_fault_one_in=0 --open_read_fault_one_in=5 --open_write_fault_one_in=0 --ops_per_thread=200000 --optimize_filters_for_memory=0 --paranoid_file_checks=1 --partition_filters=0 --partition_pinning=3 --pause_background_one_in=1000000 --periodic_compaction_seconds=10 --prefix_size=-1 --prefixpercent=0 --prepopulate_block_cache=1 --preserve_internal_time_seconds=0 --progress_reports=0 --read_fault_one_in=1000 --readahead_size=524288 --readpercent=50 --recycle_log_file_num=0 --reopen=20 --ribbon_starting_level=0 --secondary_cache_fault_one_in=32 --snapshot_hold_ops=100000 --sst_file_manager_bytes_per_sec=0 --sst_file_manager_bytes_per_truncate=0 --stats_dump_period_sec=10 --subcompactions=3 --sync=0 --sync_fault_injection=1 --target_file_size_base=16777216 --target_file_size_multiplier=1 --test_batches_snapshots=0 --top_level_index_pinning=2 --unpartitioned_pinning=1 --use_direct_io_for_flush_and_compaction=0 --use_direct_reads=0 --use_full_merge_v1=0 --use_get_entity=1 --use_merge=0 --use_multi_get_entity=0 --use_multiget=1 --use_put_entity_one_in=1 --user_timestamp_size=0 --value_size_mult=32 --verify_checksum=1 --verify_checksum_one_in=1000000 --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=524288 --wal_compression=zstd --write_buffer_size=33554432 --write_dbid_to_manifest=1 --writepercent=35```

Reviewed By: hx235

Differential Revision: D48537494

Pulled By: cbi42

fbshipit-source-id: ddae21b9bb6ee8d67229121f58513e95f7ef6d8d
2023-08-22 09:47:04 -07:00