Summary:
These bugs surfaced while I was trying to add the stress test for the feature:
Bug 1) On the index building path: the optimization to use user key instead of internal key as separator needed a bit tweak for when user defined timestamps can be removed. Because even though the user key look different now and eligible to be used as separator, when their user-defined timestamps are removed, they could be equal and that invariant no longer stands.
Bug 2) On the index reading path: one path that builds the second level index iterator for `PartitionedIndexReader` are not passing the corresponding `user_defined_timestamps_persisted` flag. As a result, the default `true` value be used leading to no minimum timestamps padded when they should be.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12062
Test Plan:
For bug 1): added separate unit test `BlockBasedTableReaderTest::Get` to exercise the `Get` API. It's a different code path from `MultiGet` so worth having its own test. Also in order to cover the bug, the test is modified to generate key values with the same user provided key, different timestamps and different sequence numbers. The test reads back different versions of the same user provided key. `MultiGet` takes one `ReadOptions` with one read timestamp so we cannot test retrieving different versions of the same key easily.
For bug 2): simply added options `BlockBasedTableOptions.metadata_cache_options.partition_pinning = PinningTier::kAll` to exercise all the index iterator creating paths.
Reviewed By: ltamasi
Differential Revision: D51508280
Pulled By: jowlyzhang
fbshipit-source-id: 8b174d3d70373c0599266ac1f467f2bd4d7ea6e5
Summary:
The option "write_buffer_size" has changed from 4MB for 64MB by default, and the compact_files_example will not work as expected, as the test data written is only about 50MB and will not trigger compaction.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12084
Reviewed By: cbi42
Differential Revision: D51499959
Pulled By: ajkr
fbshipit-source-id: 4f4b25ebc4b6bb568501adc8e97813edcddceea8
Summary:
Add some asserts in the `CacheWithSecondaryAdapter` destructor to help debug a crash test failure.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12082
Reviewed By: cbi42
Differential Revision: D51486041
Pulled By: anand1976
fbshipit-source-id: 76537beed31ba27ab9ac8b4ce6deb775629e3be5
Summary:
`WithinPenultimateLevelOutputRange()` is updated in https://github.com/facebook/rocksdb/issues/12063 to check internal key range. However, op_type of a key can change during compaction, e.g. MERGE -> PUT, which makes a key larger and becomes out of penultimate output range. This has caused stress test failures with error message "Unsafe to store Seq later than snapshot in the last level if per_key_placement is enabled". So update `WithinPenultimateLevelOutputRange()` to only check user key and sequence number.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12081
Test Plan:
* This repro can produce the corruption within a few runs. Ran it a few times after the fix and did not see Corruption failure.
```
python3 ./tools/db_crashtest.py whitebox --test_tiered_storage --random_kill_odd=888887 --use_merge=1 --writepercent=100 --readpercent=0 --prefixpercent=0 --delpercent=0 --delrangepercent=0 --iterpercent=0 --write_buffer_size=419430 --column_families=1 --read_fault_one_in=0 --write_fault_one_in=0
```
Reviewed By: ajkr
Differential Revision: D51481202
Pulled By: cbi42
fbshipit-source-id: cad6b65099733e03071b496e752bbdb09cf4db82
Summary:
The test failure in https://github.com/facebook/rocksdb/issues/11909 shows that we may compact keys outside of internal key range of penultimate level input files from last level to penultimate level, which can potentially cause overlapping files in the penultimate level. This PR updates the `Compaction::WithinPenultimateLevelOutputRange()` to check internal key range instead of user key.
Other fixes:
* skip range del sentinels when deciding output level for tiered compaction
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12063
Test Plan:
- existing unit tests
- apply the fix to https://github.com/facebook/rocksdb/issues/11905 and run `./tiered_compaction_test --gtest_filter="*RangeDelsCauseFileEndpointsToOverlap*"`
Reviewed By: ajkr
Differential Revision: D51288985
Pulled By: cbi42
fbshipit-source-id: 70085db5f5c3b15300bcbc39057d57b83fd9902a
Summary:
I want to use the `WriteBufferManager` in my rust project, which requires exposing it through the c api, just like `Cache` is.
Hopefully the changes are fairly straightfoward!
Pull Request resolved: https://github.com/facebook/rocksdb/pull/11710
Reviewed By: cbi42
Differential Revision: D51166518
Pulled By: ajkr
fbshipit-source-id: cd266ff1e4a7ab145d05385cd125a8390f51f3fc
Summary:
Fixes https://github.com/facebook/rocksdb/issues/11000.
That issue pointed out that RocksDB was slow to delete archived WALs in case time-based and size-based expiration were enabled, and the time-based threshold (`WAL_ttl_seconds`) was small. This PR prevents the delay by taking into account `WAL_ttl_seconds` when deciding the frequency to process archived WALs for deletion.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12069
Reviewed By: pdillinger
Differential Revision: D51262589
Pulled By: ajkr
fbshipit-source-id: e65431a06ee96f4c599ba84a27d1aedebecbb003
Summary:
`CacheWithSecondaryAdapter` can distribute placeholder reservations across the primary and secondary caches. The current implementation of the accounting is quite complicated in order to avoid using a mutex. This may cause the accounting to be slightly off after changes to the cache capacity and ratio, resulting in assertion failures. There's also a bug in the unlikely event that the total reservation exceeds the cache capacity. Furthermore, the current implementation is difficult to reason about.
This PR simplifies it by doing the accounting while holding a mutex. The reservations are processed in 1MB chunks in order to avoid taking a lock too frequently. As a side effect, this also removes the restriction of not allowing to increase the compressed secondary cache capacity after decreasing it to 0.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12059
Test Plan: Existing unit tests, and a new test for capacity increase from 0
Reviewed By: pdillinger
Differential Revision: D51278686
Pulled By: anand1976
fbshipit-source-id: 7e1ad2c50694772997072dd59cab35c93c12ba4f
Summary:
At the moment RocksDBJava uses the default CIrcleCI JVM on Windows builds. This can and has changed in the past and can cause some incompatibilities.
This PR addresses the problem of explicitly installing and using Liberica JDK 8 as Java 8 Is the primary target for RocksdbJava.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12068
Reviewed By: cbi42
Differential Revision: D51307233
Pulled By: ajkr
fbshipit-source-id: 9cb4e173d8a9ac42e5f9fda1daf012302942fdbc
Summary:
Fixes https://github.com/facebook/rocksdb/issues/11909. The test passes after the change in https://github.com/facebook/rocksdb/issues/11917 to start mock clock from a non-zero time.
The reason for test failing is a bit complicated:
- The Put here e4ad4a0ef1/db/compaction/tiered_compaction_test.cc (L2045) happens before mock clock advances beyond 0.
- This causes oldest_key_time_ to be 0 for memtable.
- oldest_ancester_time of the first L0 file becomes 0
- L0 -> L5/6 compaction output files sets `oldest_ancestoer_time` to the current time due to these lines: 509947ce2c/db/compaction/compaction_job.cc (L1898C34-L1904).
- This causes some small sequence number to be mapped to current time: 509947ce2c/db/compaction/compaction_job.cc (L301)
- Keys in L6 is being moved up to L5 due to the unexpected seqno_to_time mapping
- When compacting keys from last level to the penultimate level, we only check keys to be within user key range of penultimate level input files. If we compact the following file 3 with file 1 and output keys to L5, we can get the reported inconsistency bug.
```
L5: file 1 [K5@20, K10@kMaxSeqno], file 2 [K10@30, K14@34)
L6: file 3 [K6@5, K10@20]
```
https://github.com/facebook/rocksdb/issues/12063 will add fixes to check internal key range when compacting keys from last level up to the penultimate level.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12064
Test Plan: the unit test passes
Reviewed By: ajkr
Differential Revision: D51281149
Pulled By: cbi42
fbshipit-source-id: 00b7f026c453454d9f3af5b2de441383a96f0c62
Summary:
- Add missing null check for ColumnFamilyHandle in `GetEntity()`
- `FailIfCfHasTs()` now returns `Status::InvalidArgument()` if `column_family` is null. `MultiGetEntity()` can rely on this for cfh null check.
- Added `DeleteRange` API using Default Column Family to be consistent with other major APIs (This was also causing Java Test failure after the `FailIfCfHasTs()` change)
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12057
Test Plan:
- Updated `DBWideBasicTest::GetEntityAsPinnableAttributeGroups` to include null CF case
- Updated `DBWideBasicTest::MultiCFMultiGetEntityAsPinnableAttributeGroups` to include null CF case
Reviewed By: jowlyzhang
Differential Revision: D51167445
Pulled By: jaykorean
fbshipit-source-id: 1c1e44fd7b7df4d2dc3bb2d7d251da85bad7d664
Summary:
When delay didn't happen, histogram WRITE_STALL is still recorded, and ticker STALL_MICROS is not recorded.
This is a bug, neither WRITE_STALL or STALL_MICROS should not be recorded when delay did not happen.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12067
Reviewed By: cbi42
Differential Revision: D51263133
Pulled By: ajkr
fbshipit-source-id: bd82d8328fe088d613991966e83854afdabc6a25
Summary:
When I call `DBWithTTLImpl::Resume()`, it returns `Status::NotSupported`. Did `StackableDB` miss this API ?
Thanks !
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12060
Reviewed By: jaykorean
Differential Revision: D51202742
Pulled By: ajkr
fbshipit-source-id: 5e01a54a42efd81fd57b3c992b9af8bc45c59c9c
Summary:
Part of the procedures to handle manifest IO error is to disable file deletion in case some files in limbo state get deleted prematurely. This is not ideal because: 1) not all the VersionEdits whose commit encounter such an error contain updates for files, disabling file deletion sometimes are not necessary. 2) `EnableFileDeletion` has a force mode that could make other threads accidentally disrupt this procedure in recovery. 3) Disabling file deletion as a whole is also not as efficient as more precisely tracking impacted files from being prematurely deleted. This PR replaces this mechanism with tracking such files and quarantine them from being deleted in `ErrorHandler`.
These are the types of files being actively tracked in quarantine in this PR:
1) new table files and blob files from a background job
2) old manifest file whose immediately following new manifest file's CURRENT file creation gets into unclear state. Current handling is not sufficient to make sure the old manifest file is kept in case it's needed.
Note that WAL logs are not part of the quarantine because `min_log_number_to_keep` is a safe mechanism and it's only updated after successful manifest commits so it can prevent this premature deletion issue from happening.
We track these files' file numbers because they share the same file number space.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12030
Test Plan: Modified existing unit tests
Reviewed By: ajkr
Differential Revision: D51036774
Pulled By: jowlyzhang
fbshipit-source-id: 84ef26271fbbc888ef70da5c40fe843bd7038716
Summary:
Followed mrambacher's first suggestion in https://github.com/facebook/rocksdb/pull/12044#issuecomment-1800706148.
This change allows serializing a `TtlMergeOperator` that wraps an unregistered `MergeOperator`. Such a `TtlMergeOperator` cannot be loaded (validation will fail in `TtlMergeOperator::ValidateOptions()`), but that is OK for us currently.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12056
Reviewed By: hx235
Differential Revision: D51125097
Pulled By: ajkr
fbshipit-source-id: 8ed3705e8d36ab473673b9198eea6db64397ed15
Summary:
Disabling file deletion can be critical for operations like making a backup, recovery from manifest IO error (for now). Ideally as long as there is one caller requesting file deletion disabled, it should be kept disabled until all callers agree to re-enable it. So this PR removes the default forcing behavior for the `EnableFileDeletion` API, and users need to explicitly pass the argument if they insisted on doing so knowing the consequence of what can be potentially disrupted.
This PR removes the API's default argument value so it will cause breakage for all users that are relying on the default value, regardless of whether the forcing behavior is critical for them. When fixing this breakage, it's good to check if the forcing behavior is indeed needed and potential disruption is OK.
This PR also makes unit test that do not need force behavior to do a regular enable file deletion.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12001
Reviewed By: ajkr
Differential Revision: D51214683
Pulled By: jowlyzhang
fbshipit-source-id: ca7b1ebf15c09eed00f954da2f75c00d2c6a97e4
Summary:
This PR adds a missing set function for rocksdb_options in the C-API:
rocksdb_options_set_cf_paths(). Without this function, users cannot
specify different paths for different column families as it will fall back
to db_paths.
As a bonus, this PR also includes rocksdb_sst_file_metadata_get_directory()
to the C api -- a missing public function that will also make the test easier to write.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/11151
Test Plan: Augment existing c_test to verify the specified cf_path.
Reviewed By: hx235
Differential Revision: D51201888
Pulled By: ajkr
fbshipit-source-id: 62a96451f26fab60ada2005ede3eea8e9b431f30
Summary:
#### Problem
While the RocksDB C API does have the RateLimiter API, it does not
expose the auto_tuned option.
#### Summary of Change
This PR exposes auto_tuned RateLimiter option in RocksDB C API.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12058
Test Plan: Augment the C API existing test to cover the new API.
Reviewed By: cbi42
Differential Revision: D51201933
Pulled By: ajkr
fbshipit-source-id: 5bc595a9cf9f88f50fee797b729ba96f09ed8266
Summary:
As titled. This PR contains the API and stubbed implementation for piping write time.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12043
Reviewed By: pdillinger
Differential Revision: D51076575
Pulled By: jowlyzhang
fbshipit-source-id: 3b341263498351b9ccaff27cf35d5aeb5bdf0cf1
Summary:
The CreateEnvTest.CreateEncryptedFileSystem unit test is to verify the creation functionality of EncryptedFileSystem, but now it just support the builtin CTREncryptionProvider class.
This patch make it flexible to use environment variable `TEST_FS_URI`, it is useful to test customer encryption plugins.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12025
Reviewed By: anand1976
Differential Revision: D50799656
Pulled By: ajkr
fbshipit-source-id: dbcacfefbf07de9c7803f7707b34c5193bec17bf
Summary:
- Our database is corrupted, causing some sequences of wal record to be invalid (but the `record_checksum` looks fine).
- When we RecoverLogFiles in WALRecoveryMode::kPointInTimeRecovery, `assert(seq <= kMaxSequenceNumber)` will be failed.
- When it is found that sequence is illegal, can we drop the file to recover as much data as possible ? Thx !
Pull Request resolved: https://github.com/facebook/rocksdb/pull/11985
Reviewed By: anand1976
Differential Revision: D50698039
Pulled By: ajkr
fbshipit-source-id: 1e42113b58823088d7c0c3a92af5b3efbb5f5296
Summary:
`${PROJECT_NAME}` isn't guaranteed to match a target name when an artefact suffix is specified.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12055
Reviewed By: anand1976
Differential Revision: D51125532
Pulled By: ajkr
fbshipit-source-id: cd1f4a5b11eb517c379e3ee3f78592f7e606a034
Summary:
**Context/Summary:**
It's intuitive for users to assume `TablePropertiesCollector::Finish()` is called only once by RocksDB internal by the word "finish".
However, this is currently not true as RocksDB also calls this function in `BlockBased/PlainTableBuilder::GetTableProperties()` to populate user collected properties on demand.
This PR avoids that by moving that populating to where we first call `Finish()` (i.e, `NotifyCollectTableCollectorsOnFinish`)
Bonus: clarified in the API that `GetReadableProperties()` will be called after `Finish()` and added UT to ensure that.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12053
Test Plan:
- Modified test `DBPropertiesTest.GetUserDefinedTableProperties` to ensure `Finish()` only called once.
- Existing test particularly `db_properties_test, table_properties_collector_test` verify the functionality `NotifyCollectTableCollectorsOnFinish` and `GetReadableProperties()` are not broken by this change.
Reviewed By: ajkr
Differential Revision: D51095434
Pulled By: hx235
fbshipit-source-id: 1c6275258f9b99dedad313ee8427119126817973
Summary:
See new atomic.h file comments for motivation.
I have updated HyperClockCache to use the new atomic wrapper, fixing a few cases where an implicit conversion was accidentally used and therefore mixing std::memory_order_seq_cst where release/acquire ordering (or relaxed) was intended. There probably wasn't a real bug because I think all the cases happened to be in single-threaded contexts like constructors/destructors or statistical ops like `GetCapacity()` that don't need any particular ordering constraints.
Recommended follow-up:
* Replace other uses of std::atomic to help keep them safe from bugs.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12051
Test Plan:
Did some local correctness stress testing with cache_bench. Also triggered 15 runs of fbcode_blackbox_crash_test and saw no related failures (just 3 failures in ~CacheWithSecondaryAdapter(), already known)
No performance difference seen before & after running simultaneously:
```
(while ./cache_bench -cache_type=fixed_hyper_clock_cache -populate_cache=0 -cache_size=3000000000 -ops_per_thread=500000 -threads=12 -histograms=0 2>&1 | grep parallel; do :; done) | awk '{ s += $3; c++; print "Avg time: " (s/c);}'
```
... for both fixed_hcc and auto_hcc.
Reviewed By: jowlyzhang
Differential Revision: D51090518
Pulled By: pdillinger
fbshipit-source-id: eeb324facb3185584603f9ea0c4de6f32919a2d7
Summary:
Env::NewRandomRWFile() will not create the file if it doesn't exist, as the test saying https://github.com/facebook/rocksdb/blob/main/env/env_test.cc#L2208.
This patch correct the comments of Env::NewRandomRWFile(), it may mislead the developers who use rocksdb Env() as an utility.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/11820
Reviewed By: ajkr
Differential Revision: D50176707
Pulled By: jowlyzhang
fbshipit-source-id: a6ee469f549360de8d551a4fe8517b4450df7b15
Summary:
There was some unncessary logic (e.g. a dead assignment to home_shift) left over from earlier revision of the code.
Also, rename confusing ChainRewriteLock::new_head_ / GetNewHead() to saved_head_ / GetSavedHead().
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12052
Test Plan: existing tests
Reviewed By: jowlyzhang
Differential Revision: D51091499
Pulled By: pdillinger
fbshipit-source-id: 4b191b60a2b16085681e59d49c4d97e802869db8
Summary:
We set up the images / references to the images wrongly in https://github.com/facebook/rocksdb/pull/11818
Images should be in the docs/static/images/… directory with an absolute reference to /static/images/…
Make it so.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12050
Reviewed By: pdillinger
Differential Revision: D51079811
Pulled By: jaykorean
fbshipit-source-id: 4c1ab80d313b70d0e60eec94086451d7b2814922
Summary:
When I run `make check`, there is a command that should not be printed to screen, which is shown below.
```text
... ...
Generating parallel test scripts for util_merge_operators_test
Generating parallel test scripts for write_batch_with_index_test
make[2]: Leaving directory '/home/z/rocksdb'
make[1]: Leaving directory '/home/z/rocksdb'
GEN check
make[1]: Entering directory '/home/z/rocksdb'
$DEBUG_LEVEL is 1, $LIB_MODE is shared
Makefile:185: Warning: Compiling in debug mode. Don't use the resulting binary in production
printf '%s\n' '' \
'To monitor subtest <duration,pass/fail,name>,' \
' run "make watch-log" in a separate window' ''; \
{ \
printf './%s\n' db_bloom_filter_test deletefile_test env_test c_test; \
find t -name 'run-*' -print; \
} \
| perl -pe 's,(^.*MySQLStyleTransactionTest.*$|^.*SnapshotConcurrentAccessTest.*$|^.*SeqAdvanceConcurrentTest.*$|^t/run-table_test-HarnessTest.Randomized$|^t/run-db_test-.*(?:FileCreationRandomFailure|EncodeDecompressedBlockSizeTest)$|^.*RecoverFromCorruptedWALWithoutFlush$),100 $1,' | sort -k1,1gr | sed 's/^[.0-9]* //' \
| grep -E '.' \
| grep -E -v '"^$"' \
| build_tools/gnu_parallel -j100% --plain --joblog=LOG --eta --gnu \
--tmpdir=/dev/shm/rocksdb.6lop '{} >& t/log-{/} || bash -c "cat t/log-{/}; exit $?"' ; \
parallel_retcode=$? ; \
awk '{ if ($7 != 0 || $8 != 0) { if ($7 == "Exitval") { h = $0; } else { if (!f) print h; print; f = 1 } } } END { if(f) exit 1; }' < LOG ; \
awk_retcode=$?; \
if [ $parallel_retcode -ne 0 ] || [ $awk_retcode -ne 0 ] ; then exit 1 ; fi
To monitor subtest <duration,pass/fail,name>,
run "make watch-log" in a separate window
Computers / CPU cores / Max jobs to run
1:local / 16 / 16
```
The `printf` command will make the output confusing. It would be better not to print it.
**Before Change**
**After Change**
**Test Plan**
Not applicable. This is a trivial change, only to add a `@` before a Makefile command, and it will not impact any workflows.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/11978
Reviewed By: jaykorean
Differential Revision: D51076606
Pulled By: cbi42
fbshipit-source-id: dc079ab8f60a5a5b9d04a83888884657b2e442ff
Summary:
This change simplifies some code and logic by introducing a new atomic field that tracks the next slot to grow into. It should offer slightly better performance during the growth phase (not measurable; see Test Plan below) and fix a suspected (but unconfirmed) bug like this:
* Thread 1 is in non-trivial SplitForGrow() with grow_home=n.
* Thread 2 reaches Grow() with grow_home=2n, and waits at the start of SplitForGrow() for the rewrite lock on n. By this point, the head at 2n is marked with the new shift amount but no chain is locked.
* Thread 3 reaches Grow() with grow_home=4n, and waits before SplitForGrow() for the rewrite lock on n. By this point, the head at 4n is marked with the new shift amount but no chain is locked.
* Thread 4 reaches Grow() with grow_home=8n and meets no resistance to proceeding through a SplitForGrow() on an empty chain, permanently missing out on any entries from chain n that should have ended up here.
This is fixed by not updating the shift amount at the grow_home head until we have checked the preconditions that Grow()s feeding into this one have completed.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12047
Test Plan:
Some manual cache_bench stress runs, and about 20 triggered runs of fbcode_blackbox_crash_test
No discernible performance difference on this benchmark, running before & after in parallel for a few minutes:
```
(while ./cache_bench -cache_type=auto_hyper_clock_cache -populate_cache=0 -cache_size=3000000000 -ops_per_thread=50000 -threads=12 -histograms=0 2>&1 | grep parallel; do :; done) | awk '{ s += $3; c++; print "Avg time: " (s/c);}'
```
Reviewed By: jowlyzhang
Differential Revision: D51017007
Pulled By: pdillinger
fbshipit-source-id: 5f6d6a6194fc966f94693f3205ed75c87cdad269
Summary:
I have finally tracked down and fixed a bug affecting AutoHCC that was causing CI crash test assertion failures in AutoHCC when using secondary cache, but I was only able to reproduce locally a couple of times, after very long runs/repetitions.
It turns out that the essential feature used by secondary cache to trigger the bug is Insert without keeping a handle, which is otherwise rarely used in RocksDB and not incorporated into cache_bench (also used for targeted correctness stress testing) until this change (new option `-blind_insert_percent`).
The problem was in copying some logic from FixedHCC that makes the entry "sharable" but unreferenced once populated, if no reference is to be saved. The problem in AutoHCC is that we can only add the entry to a chain after it is in the sharable state, and must be removed from the chain while in the "under (de)construction" state and before it is back in the "empty" state. Also, it is possible for Lookup to find entries that are not connected to any chain, by design for efficiency, and for Release to erase_if_last_ref. Therefore, we could have
* Thread 1 starts to Insert a cache entry without keeping ref, and pauses before adding to the chain.
* Thread 2 finds it with Lookup optimizations, and then does Release with `erase_if_last_ref=true` causing it to trigger erasure on the entry. It successfully locks the home chain for the entry and purges any entries pending erasure. It is OK that this entry is not found on the chain, as another thread is allowed to remove it from the chain before we are able to (but after is it marked for (de)construction). And after the purge of the chain, the entry is marked empty.
* Thread 1 resumes in adding the slot (presumed entry) to the home chain for what was being inserted, but that now violates invariants and sets up a race or double-chain-reference as another thread could insert a new entry in the slot and try to insert into a different chain.
This is easily fixed by holding on to a reference until inserted onto the chain.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12046
Test Plan:
As I don't have a reliable local reproducer, I triggered 20 runs of internal CI on fbcode_blackbox_crash_test that were previously failing in AutoHCC with about 1/3 probability, and they all passed.
Also re-enabling AutoHCC in the crash test with this change. (Revert https://github.com/facebook/rocksdb/issues/12000)
Reviewed By: jowlyzhang
Differential Revision: D51016979
Pulled By: pdillinger
fbshipit-source-id: 3840fb829d65b97c779d8aed62a4a4a433aeff2b
Summary:
Implementation of `GetEntity()` API that returns wide-column entities as AttributeGroups from multiple column families for a single key. Regarding the definition of Attribute groups, please see the detailed example description in PR https://github.com/facebook/rocksdb/issues/11925
Pull Request resolved: https://github.com/facebook/rocksdb/pull/11943
Test Plan:
- `DBWideBasicTest::GetEntityAsPinnableAttributeGroups` added
will enable the new API in the `db_stress` after merging
Reviewed By: ltamasi
Differential Revision: D50195794
Pulled By: jaykorean
fbshipit-source-id: 218d54841ac7e337de62e13b1233b0a99bd91af3
Summary:
- The struct previously named `OffpeakTimeInfo` has been renamed to `OffpeakTimeOption` to indicate that it's a user-configurable option. Additionally, a new struct, `OffpeakTimeInfo`, has been introduced, which includes two fields: `is_now_offpeak` and `seconds_till_next_offpeak_start`. This change prevents the need to parse the `daily_offpeak_time_utc` string twice.
- It's worth noting that we may consider adding more fields to the `OffpeakTimeInfo` struct, such as `elapsed_seconds` and `total_seconds`, as needed for further optimization.
- Within `VersionStorageInfo::ComputeFilesMarkedForPeriodicCompaction()`, we've adjusted the `allowed_time_limit` to include files that are expected to expire by the next offpeak start.
- We might explore further optimizations, such as evenly distributing files to mark during offpeak hours, if the initial approach results in marking too many files simultaneously during the first scoring in offpeak hours. The primary objective of this PR is to prevent periodic compactions during non-offpeak hours when offpeak hours are configured. We'll start with this straightforward solution and assess whether it suffices for now.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12031
Test Plan:
Unit Tests added
- `DBCompactionTest::LevelPeriodicCompactionOffpeak` for Leveled
- `DBTestUniversalCompaction2::PeriodicCompaction` for Universal
Reviewed By: cbi42
Differential Revision: D50900292
Pulled By: jaykorean
fbshipit-source-id: 267e7d3332d45a5d9881796786c8650fa0a3b43d
Summary:
Mostly things for using cache_bench for stress/correctness testing.
* Make secondary_cache_uri option work with HCC (forgot to update when secondary support was added for HCC)
* Add -pinned_ratio option to keep more than just one entry per thread pinned. This can be important for testing eviction stress.
* Add -vary_capacity_ratio for testing dynamically changing capacity.
Also added some overrides to CacheWrapper to help with diagnostic output.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12041
Test Plan: manual, make check
Reviewed By: jowlyzhang
Differential Revision: D51013430
Pulled By: pdillinger
fbshipit-source-id: 7914adc1218f0afacace05ccd77d3bfb91a878d0
Summary:
We did some investigation into the performance of JNI for workloads emulating how data is carried between Java and C++
for RocksDB. The repo for our performance work lives at https://github.com/evolvedbinary/jni-benchmarks
This is a report text from that work, extracted as a blog post.
Along with some supporting files (png, pdf of graphs).
Pull Request resolved: https://github.com/facebook/rocksdb/pull/11818
Reviewed By: jaykorean
Differential Revision: D50907467
Pulled By: pdillinger
fbshipit-source-id: ec6a43c83bd9ad94a3d11cfd87031e613acf7659
Summary:
.. and update some unit tests that failed with this change. See comment in ExternalSSTFileBasicTest.IngestFileWithCorruptedDataBlock for more explanation.
The missing status check is not caught by `ASSERT_STATUS_CHECKED=1` due to this line: 8505b26db1/table/block_based/block.h (L394). Will explore if we can remove it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12042
Test Plan: existing unit tests.
Reviewed By: ajkr
Differential Revision: D50994769
Pulled By: cbi42
fbshipit-source-id: c91615bccd6094a91634c50b98401d456cbb927b
Summary:
- Add the following missing options to src/main/java/org/rocksdb/ImportColumnFamilyOptions.java and in java/rocksjni/import_column_family_options.cc in RocksJava.
- Add the struct to src/main/java/org/rocksdb/ExportImportFilesMetaData.java and in java/rocksjni/export_import_files_metadatajni.cc in RocksJava.
- Add New Java API `createColumnFamilyWithImport` to src/main/java/org/rocksdb/RocksDB.java
- Add New Java API `exportColumnFamily` to src/main/java/org/rocksdb/Checkpoint.java
Pull Request resolved: https://github.com/facebook/rocksdb/pull/11646
Test Plan:
- added unit tests for exportColumnFamily in org.rocksdb.CheckpointTest
- added unit tests for createColumnFamilyWithImport to org.rocksdb.ImportColumnFamilyTest
Reviewed By: ajkr
Differential Revision: D50889700
Pulled By: cbi42
fbshipit-source-id: d623b35e445bba62a0d3c007d74352e937678f6c
Summary:
db_stress flag `verify_iterator_with_expected_state_one_in` is only enabled for in crash test if --simple flag is set. This PR enables it for all supported crash tests by enabling it by default. This adds coverage for --txn and --enable_ts crash tests.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/12040
Test Plan:
ran crash tests that disabled this flag before for a few hours
```
python3 ./tools/db_crashtest.py blackbox --verify_iterator_with_expected_state_one_in=1 --txn --txn_write_policy=[0,1,2]
python3 ./tools/db_crashtest.py blackbox --verify_iterator_with_expected_state_one_in=1 --enable_ts
```
Reviewed By: ajkr, hx235
Differential Revision: D50980001
Pulled By: cbi42
fbshipit-source-id: 3daf6b4c32bdddc5df057240068162aa1a907587
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
Jay Huh