Commit Graph

7803 Commits

Author SHA1 Message Date
Maysam Yabandeh
a661c0d208 WritePrepared: optimize read path by avoiding virtual (#5018)
Summary:
The read path includes a callback function, ReadCallback, which would eventually calls IsInSnapshot to figure if a particular seq is in the reading snapshot or not. This callback is virtual, which adds the cost of multiple virtual function call to each read. The first few checks in IsInSnapshot, however, are quite trivial and take care of majority of the cases. The patch moves those to a non-virtual function in the the parent class, ReadCallback, to lower the virtual callback cost.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5018

Differential Revision: D14226562

Pulled By: maysamyabandeh

fbshipit-source-id: 6feed5b34f3b082e52092c5ef143e29b49c46b44
2019-02-26 16:56:19 -08:00
Adam Retter
bb474e9a02 Add missing functionality to RocksJava (#4833)
Summary:
This is my latest round of changes to add missing items to RocksJava. More to come in future PRs.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4833

Differential Revision: D14152266

Pulled By: sagar0

fbshipit-source-id: d6cff67e26da06c131491b5cf6911a8cd0db0775
2019-02-22 14:46:46 -08:00
Siying Dong
06f378d75e When closing BlobDB, should first wait for all background tasks (#5005)
Summary:
When closing a BlobDB, it only waits for background tasks
to finish as the last thing, but the background task may access
some variables that are destroyed. The fix is to introduce a
shutdown function in the timer queue and call the function as
the first thing when destorying BlobDB.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5005

Differential Revision: D14170342

Pulled By: siying

fbshipit-source-id: 081e6a2d99b9765d5956cf6cdfc290c07270c233
2019-02-21 17:26:01 -08:00
Zhongyi Xie
c4f5d0aa15 add GetStatsHistory to retrieve stats snapshots (#4748)
Summary:
This PR adds public `GetStatsHistory` API to retrieve stats history in the form of an std map. The key of the map is the timestamp in microseconds when the stats snapshot is taken, the value is another std map from stats name to stats value (stored in std string). Two DBOptions are introduced: `stats_persist_period_sec` (default 10 minutes) controls the intervals between two snapshots are taken; `max_stats_history_count` (default 10) controls the max number of history snapshots to keep in memory. RocksDB will stop collecting stats snapshots if `stats_persist_period_sec` is set to 0.

(This PR is the in-memory part of https://github.com/facebook/rocksdb/pull/4535)
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4748

Differential Revision: D13961471

Pulled By: miasantreble

fbshipit-source-id: ac836d401ecb84ea92216bf9966f969dedf4ad04
2019-02-20 15:52:54 -08:00
Fosco Marotto
48c8d8445e Update version and history for 6.0 2019-02-20 10:10:11 -08:00
Maysam Yabandeh
cf98df34c1 Change random seed for txn stress tests on each run (#5004)
Summary:
Currently the transaction stress tests use thread id as the seed. Since the thread ids are likely to be the same across multiple runs, the seed is thus going to be the same. The patch includes time in calculating the seed to help covering a very different part of state space in each run of the stress tests. To be able to reproduce the bug in case the stress tests failed, it also prints out the time that was used to calculate the seed value.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5004

Differential Revision: D14144356

Pulled By: maysamyabandeh

fbshipit-source-id: 728ed522f550fc8b4f5f9f373259c05fe9a54556
2019-02-19 19:58:55 -08:00
Maysam Yabandeh
0f4244fe00 WritePrepared: Improve stress tests with slow threads (#4974)
Summary:
The transaction stress tests, stress a high concurrency scenario. In WritePrepared/WriteUnPrepared we need to also stress the scenarios where an inserting/reading transaction is very slow. This would stress the corner cases that the caching is not sufficient and other slower data structures are engaged. To emulate such cases we make use of slow inserter/verifier threads and also reduce the size of cache data structures.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4974

Differential Revision: D14143070

Pulled By: maysamyabandeh

fbshipit-source-id: 81eb674678faf9fae0f654cd60ebcc74e26aeee7
2019-02-19 16:56:49 -08:00
Maysam Yabandeh
bcdc8c8b19 WritePrepared: max_evicted_seq_ update during commit cache lookup (#4955)
Summary:
max_evicted_seq_ could be updated in the middle of the read in ::IsInSnapshot. The code to be correct in presence of this update would be complicated. The patch simplifies it by checking the value of max_evicted_seq_ before and after looking into commit_cache_ and retries in the unlucky case that it was changed.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4955

Differential Revision: D13999556

Pulled By: maysamyabandeh

fbshipit-source-id: 7a1bdfa95ea8b5d8d73ddff3263ed31d7297b39c
2019-02-19 16:14:08 -08:00
Siying Dong
93f7e7a450 Temporarily Disable DBTest2.PresetCompressionDict (#5003)
Summary:
DBTest2.PresetCompressionDict is flaky. Temparily disable it for now.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5003

Differential Revision: D14139505

Pulled By: siying

fbshipit-source-id: ebf1872d364b76b2cb021b489ea2f17ee997116a
2019-02-19 14:44:12 -08:00
Yanqin Jin
7d23210226 Separate crash test with atomic flush (#4945)
Summary:
Currently crash test covers cases with and without atomic flush, but takes too
long to finish. Therefore it may be a better idea to put crash test with atomic
flush in a separate set of tests.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4945

Differential Revision: D13947548

Pulled By: riversand963

fbshipit-source-id: 177c6de865290fd650b0103408339eaa3f801d8c
2019-02-19 14:08:39 -08:00
Michael Liu
3c5d1b16b1 Apply modernize-use-override (3)
Summary:
Use C++11’s override and remove virtual where applicable.
Change are automatically generated.

bypass-lint
drop-conflicts

Reviewed By: igorsugak

Differential Revision: D14131816

fbshipit-source-id: f20e7f7cecf2e699d70f5fa036f72c0e3f59b50e
2019-02-19 13:39:49 -08:00
Zhongyi Xie
ed995c6a69 add whole key bloom filter support in memtables (#4985)
Summary:
MyRocks calls `GetForUpdate` on `INSERT`, for unique key check, and in almost all cases GetForUpdate returns empty result. For such cases, whole key bloom filter is helpful.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4985

Differential Revision: D14118257

Pulled By: miasantreble

fbshipit-source-id: d35cb7109c62fd5ad541a26968e3a3e16d3e85ea
2019-02-19 12:15:39 -08:00
Siying Dong
c2affccc18 Header logger should call LogHeader() (#4980)
Summary:
The info log header feature never worked well, because log level Header was not
translated to Logger::LogHeader() call. Fix it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4980

Differential Revision: D14087283

Pulled By: siying

fbshipit-source-id: 7e7d03ce35fa8d13d4ee549f46f7326f7bc0006d
2019-02-15 16:59:36 -08:00
Siying Dong
26a33ee5bd flush_job logs data size too (#4979)
Summary:
Right now when a flush is triggered, the memory consumption is logged but data size is not.
It's useful to log both when we debug unexpected small flushed file size.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4979

Differential Revision: D14071979

Pulled By: siying

fbshipit-source-id: 0cd60449c5205eb00e0fbc299084418f609904ed
2019-02-15 16:33:19 -08:00
Siying Dong
4db46aa2e6 Fix LITE Build (#4989)
Summary:
LITE mode has EventListener to be an empty class. However in db_bench,
it is used. When "override" is added to the functions, the build breaks. Fix it
by keeping the listener empty in LITE mode.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4989

Differential Revision: D14108132

Pulled By: siying

fbshipit-source-id: 80121aab35b1120e502b37b782301dd700692697
2019-02-15 16:13:11 -08:00
Aubin Sanyal
3231a2e581 Deprecate ttl option from CompactionOptionsFIFO (#4965)
Summary:
We introduced ttl option in CompactionOptionsFIFO when ttl-based file
deletion (compaction) was supported only as part of FIFO Compaction. But
with the extension of ttl semantics even to Level compaction,
CompactionOptionsFIFO.ttl can now be deprecated. Instead we will start
using ColumnFamilyOptions.ttl for FIFO compaction as well.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4965

Differential Revision: D14072960

Pulled By: sagar0

fbshipit-source-id: c98cc2ae695a28136295787cd88d36a220fc219e
2019-02-15 09:51:41 -08:00
Michael Liu
ca89ac2ba9 Apply modernize-use-override (2nd iteration)
Summary:
Use C++11’s override and remove virtual where applicable.
Change are automatically generated.

Reviewed By: Orvid

Differential Revision: D14090024

fbshipit-source-id: 1e9432e87d2657e1ff0028e15370a85d1739ba2a
2019-02-14 14:41:36 -08:00
Andrew Kryczka
c8c8104d7e Dictionary compression for files written by SstFileWriter (#4978)
Summary:
If `CompressionOptions::max_dict_bytes` and/or `CompressionOptions::zstd_max_train_bytes` are set, `SstFileWriter` will now generate files respecting those options.

I refactored the logic a bit for deciding when to use dictionary compression. Previously we plumbed `is_bottommost_level` down to the table builder and used that. However it was kind of confusing in `SstFileWriter`'s context since we don't know what level the file will be ingested to. Instead, now the higher-level callers (e.g., flush, compaction, file writer) are responsible for building the right `CompressionOptions` to give the table builder.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4978

Differential Revision: D14060763

Pulled By: ajkr

fbshipit-source-id: dc802c327896df2b319dc162d6acc82b9cdb452a
2019-02-14 11:23:55 -08:00
Yanqin Jin
4fc442029a Avoid using kInAtomicGroup tag for single-cf op (#4981)
Summary:
if an operation just involves a single column family, then we do
not have to set the kInAtomicGroup tag when writing to MANIFEST. This change
can fix a compatibility test failure, i.e. 5.15 and earlier cannot recognize
kInAtomicGroup tag.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4981

Differential Revision: D14072687

Pulled By: riversand963

fbshipit-source-id: 46b0c61e399f16c6b7169de0b33430d0ed90d6d4
2019-02-13 18:33:42 -08:00
Andrew Kryczka
34b55dd8c0 Fix no compression CI test config (#4982)
Summary:
We should strip `-DZSTD` to prevent ZSTD from being used in the no compression tests, similarly to how we prevent all other compression libraries from being used.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4982

Differential Revision: D14075349

Pulled By: ajkr

fbshipit-source-id: 8bd861516cf28a568c2b701ad33d0bb658db93b2
2019-02-13 16:47:01 -08:00
Philip Jameson
51a90415e2 Add load statements to rocksdb TARGETS files
Reviewed By: siying

Differential Revision: D13993686

fbshipit-source-id: 0c55e8952307bcf457c1d78d527a0c86b59628e8
2019-02-13 14:08:21 -08:00
Yanqin Jin
5af9446ee6 Remove Lua compaction filter from RocksDB main repo (#4971)
Summary:
as title. For people who continue to need Lua compaction filter, you
can copy the include/rocksdb/utilities/rocks_lua/lua_compaction_filter.h and
utilities/lua/rocks_lua_compaction_filter.cc to your own codebase.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4971

Differential Revision: D14047468

Pulled By: riversand963

fbshipit-source-id: 9ad1a6484a7c94e478f1e108127a3184e4069f70
2019-02-13 12:42:44 -08:00
Yanqin Jin
a69d4deefb Atomic ingest (#4895)
Summary:
Make file ingestion atomic.

 as title.
Ingesting external SST files into multiple column families should be atomic. If
a crash occurs and db reopens, either all column families have successfully
ingested the files before the crash, or non of the ingestions have any effect
on the state of the db.

Also add unit tests for atomic ingestion.

Note that the unit test here does not cover the case of incomplete atomic group
in the MANIFEST, which is covered in VersionSetTest already.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4895

Differential Revision: D13718245

Pulled By: riversand963

fbshipit-source-id: 7df97cc483af73ad44dd6993008f99b083852198
2019-02-12 19:16:17 -08:00
Adam Retter
33b33235ff Add Java multiGet API for returning List<byte[]> (#1570)
Summary:
Closes https://github.com/facebook/rocksdb/pull/1570
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4797

Differential Revision: D13961770

Pulled By: sagar0

fbshipit-source-id: e34fd6250d0cd3ebb0bd688e8801fe8947fd464d
2019-02-12 17:04:48 -08:00
Siying Dong
49ddd7ec4f Stats should be logged in INFO level (#4977)
Summary:
Previously, stats were logged in warning level. This was done in that way because
people reported that it wasn't logged in MyRocks. However, later we learned that it turns
out to be due to a bug in MyRocks, which is fixed in
79bb705e74

Now we revert the stats logging to INFO level, so that it doesn't pollute the warning
level logging.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4977

Differential Revision: D14058485

Pulled By: siying

fbshipit-source-id: 19fab323c19d9bc88184287f209551f9a77ca0e6
2019-02-12 16:54:55 -08:00
Sagar Vemuri
eafb09a380 Fix issues found by Clang Analyzer (#4976)
Summary:
Fix issues found by Clang Analyzer.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4976

Differential Revision: D14054211

Pulled By: sagar0

fbshipit-source-id: ec2053bae43af3b2ff3425306824c677e3ba70c2
2019-02-12 13:59:44 -08:00
Yanqin Jin
c5a64cffd2 Avoid fsync on the same directory in atomic flush (#4817)
Summary:
In `DBImpl::AtomicFlushMemTablesToOutputFiles`, we need to call fsync only once
on the same data directory. If two column families share a common directory for
their data, we call fsync only once.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4817

Differential Revision: D13543689

Pulled By: riversand963

fbshipit-source-id: 4701d77c96a47802fbf6cb9f3337ee65d46b95f5
2019-02-12 12:28:36 -08:00
Andrew Kryczka
62f70f6d14 Reduce scope of compression dictionary to single SST (#4952)
Summary:
Our previous approach was to train one compression dictionary per compaction, using the first output SST to train a dictionary, and then applying it on subsequent SSTs in the same compaction. While this was great for minimizing CPU/memory/I/O overhead, it did not achieve good compression ratios in practice. In our most promising potential use case, moderate reductions in a dictionary's scope make a major difference on compression ratio.

So, this PR changes compression dictionary to be scoped per-SST. It accepts the tradeoff during table building to use more memory and CPU. Important changes include:

- The `BlockBasedTableBuilder` has a new state when dictionary compression is in-use: `kBuffered`. In that state it accumulates uncompressed data in-memory whenever `Add` is called.
- After accumulating target file size bytes or calling `BlockBasedTableBuilder::Finish`, a `BlockBasedTableBuilder` moves to the `kUnbuffered` state. The transition (`EnterUnbuffered()`) involves sampling the buffered data, training a dictionary, and compressing/writing out all buffered data. In the `kUnbuffered` state, a `BlockBasedTableBuilder` behaves the same as before -- blocks are compressed/written out as soon as they fill up.
- Samples are now whole uncompressed data blocks, except the final sample may be a partial data block so we don't breach the user's configured `max_dict_bytes` or `zstd_max_train_bytes`. The dictionary trainer is supposed to work better when we pass it real units of compression. Previously we were passing 64-byte KV samples which was not realistic.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4952

Differential Revision: D13967980

Pulled By: ajkr

fbshipit-source-id: 82bea6f7537e1529c7a1a4cdee84585f5949300f
2019-02-11 19:47:32 -08:00
Peter (Stig) Edwards
79496d71ed Increment NUMBER_BLOCK_NOT_COMPRESSED when !GoodCompressionRatio (#4929)
Summary:
See https://github.com/facebook/rocksdb/issues/4884
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4929

Differential Revision: D14028333

Pulled By: sagar0

fbshipit-source-id: eed12bceae85385a34aaa6dd303bf0f53c4c7b06
2019-02-11 17:56:23 -08:00
Maysam Yabandeh
d6b9b3b884 Enhance transaction_test_util with delays (#4970)
Summary:
Enhance ::Insert and ::Verify test functions to add artificial delay between prepare and commit, and take snapshot and reads respectively.  A future PR will make use of these to improve stress tests to test against long-running transactions as well as long-running backup jobs. Also randomly sets set_snapshot to false for inserters to skip setting the snapshot in the initialization phase and let the snapshot be taken later explicitly.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4970

Differential Revision: D14031342

Pulled By: maysamyabandeh

fbshipit-source-id: b52b453751f0b25b81b23c48892bc1d152464cab
2019-02-11 16:02:37 -08:00
Maysam Yabandeh
576d2d6c60 WritePrepared: relax assert in compaction iterator (#4969)
Summary:
If IsInSnapshot(seq2, snapshot) determines that the snapshot is released, the future queries IsInSnapshot(seq1, snapshot) could still return a definitive answer of true if for example seq1 is too old that is determined visible in all snapshots. This violates a recently added assert statement to compaction iterator. The patch relaxes the assert.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4969

Differential Revision: D14030998

Pulled By: maysamyabandeh

fbshipit-source-id: 6db53db0e37d0a20e8997ef2c1004b8627614ab9
2019-02-11 15:01:46 -08:00
Andrew Kryczka
1218704b61 Fix compression_zstd_max_train_bytes coverage in stress test (#4957)
Summary:
Previously `finalize_and_sanitize` function was always zeroing out `compression_zstd_max_train_bytes`. It was only supposed to do that when non-ZSTD compression was used. But since `--compression_type` was an unknown argument (i.e., one that `db_crashtest.py` does not recognize and blindly forwards to `db_stress`), `finalize_and_sanitize` could not tell whether ZSTD was used. This PR fixes it simply by making `--compression_type` a known argument with snappy as default (same as `db_stress`).
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4957

Differential Revision: D13994302

Pulled By: ajkr

fbshipit-source-id: 1b0baea7331397822830970d3698642eb7a7df65
2019-02-11 14:56:39 -08:00
Maysam Yabandeh
9144d1f186 WritePrepared: add private options to TransactionDBOptions (#4966)
Summary:
WritePreparedTransactionDB operates with more options which should not be configurable to avoid complicating it for the users. For testing purposes however we need to change the default value of this parameters. This patch makes these parameters private fields in TransactionDBOptions so that the existing ::Open API could use them seamlessly without however exposing them to the users.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4966

Differential Revision: D14015986

Pulled By: maysamyabandeh

fbshipit-source-id: 13037efa7dfdd6f73ec7a19414b66571e044c633
2019-02-11 14:44:02 -08:00
Yanqin Jin
2d049ab7e8 Checksum properties block for block-based table (#4956)
Summary:
Always enable properties block checksum verification for block-based table. For external SST file ingested with 'write_global_seqno==true', we use 'DecodeEntrySlow' to parse its blocks' contents so that the process will not die upon failing the assertion possibly caused by corruption.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4956

Differential Revision: D14012741

Pulled By: riversand963

fbshipit-source-id: 8b766e6f54b36f8f9e074c0e19e0926ec3cce186
2019-02-11 11:50:01 -08:00
Siying Dong
5d9a623e2c Add a unit test to Ignorable manfiest record (#4964)
Summary:
https://github.com/facebook/rocksdb/pull/4960 introduced ignorable manfiest
record. Adding a test to it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4964

Differential Revision: D14012667

Pulled By: siying

fbshipit-source-id: e5f10ecc68dec2716e178d44f0fe2b76c3d857ef
2019-02-11 11:20:24 -08:00
tang-jianfeng
08809f5e6c Implement trace sampling (#4963)
Summary:
Implement trace sampling to allow user to specify the sampling frequency, i.e. save one per how many requests, so that a user does not need to log all if he/she is interested in only a sampled set.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4963

Differential Revision: D14011190

Pulled By: tang-jianfeng

fbshipit-source-id: 078b631d9319b67cb089dd2c30e21d0df8dc406a
2019-02-08 18:08:18 -08:00
Maysam Yabandeh
10d14693ac WritePrepared: fix ValidateSnapshot with long-running txn (#4961)
Summary:
ValidateSnapshot checks if another txn has committed a value to about-to-be-locked key since a particular snapshot. It applies an optimization of looking into only the memtable if snapshot seq is larger than the earliest seq in the memtables. With a long-running txn in WritePrepared, the prepared value might be flushed out to the disk and yet it commits after the snapshot, which breaks this optimization. The patch fixes that by disabling this optimization when the min_uncomitted seq at the time the snapshot was taken is lower than earliest seq in the memtables.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4961

Differential Revision: D14009947

Pulled By: maysamyabandeh

fbshipit-source-id: 1d11679950326f7c4094b433e6b821b729f08850
2019-02-08 18:01:25 -08:00
Maysam Yabandeh
39fb88f14e Reset size_ to 0 in PinnableSlice::Reset (#4962)
Summary:
It would avoid bugs if the reused PinnableSlice is not actually reassigned and yet the programmer makes conclusions based on the size of the Slice.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4962

Differential Revision: D14012710

Pulled By: maysamyabandeh

fbshipit-source-id: 23f4e173386b5461fd5650f44cde470805f4e816
2019-02-08 16:51:17 -08:00
Siying Dong
1a761e6a6c Add a placeholder in manifest indicating ignorable record (#4960)
Summary:
We want to reserve some right that some extra information added manifest
in the future can be forward compatible by previous versions. Now we create a
place holder for that. A bit in tag is added to indicate that a field can be
safely ignored.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4960

Differential Revision: D14000484

Pulled By: siying

fbshipit-source-id: cbf5bad3f9d5ec798f789806f244d1c20d3b66d6
2019-02-08 11:33:11 -08:00
Siying Dong
f48758e939 Deprecate CompactionFilter::IgnoreSnapshots() = false (#4954)
Summary:
We found that the behavior of CompactionFilter::IgnoreSnapshots() = false isn't
what we have expected. We thought that snapshot will always be preserved.
However, we just realized that, if no snapshot is created while compaction
starts, and a snapshot is created after that, the data seen from the snapshot
can successfully be dropped by the compaction. This creates a strange behavior
to the feature, which is hard to explain. Like what is documented in code
comment, this feature is not very useful with snapshot anyway. The decision
is to deprecate the feature.

We keep the function to avoid to break users code. However, we will fail
compactions if false is returned.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4954

Differential Revision: D13981900

Pulled By: siying

fbshipit-source-id: 2db8c2c3865acd86a28dca625945d1481b1d1e36
2019-02-07 16:57:33 -08:00
Siying Dong
cf3a671733 Remove cuckoo hash memtable (#4953)
Summary:
Cuckoo Hash is less useful than we initially expected. Remove it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4953

Differential Revision: D13979264

Pulled By: siying

fbshipit-source-id: 2a60afdaa989f045357398b43a1cc5d46f4492ed
2019-02-07 16:15:27 -08:00
Maysam Yabandeh
199fabc197 WritePrepared: non-atomic commit of delayed prepared (#4947)
Summary:
Commit of delayed prepared has two non-atomic steps: add to commit cache, remove from delayed_prepared_. Similarly in ::IsInSnapshot we read from commit cache first and then look into delayed_prepared_. Due to non-atomicity thus the reader might not find the
prep_seq that is just committed neither in commit cache nor in delayed_prepared_. To fix that i)
we check if there was any delayed prepared BEFORE looking into commit
cache, ii) if there was, we complete the search steps to be these: i)
commit cache, ii) delayed prepared, commit cache again. In this way if
the first query to commit cache missed the commit, the 2nd will catch it. The cost of the redundant read from commit cache is paid only if delayed_prepared_ is nonempty which should be a very rare scenario.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4947

Differential Revision: D13952754

Pulled By: maysamyabandeh

fbshipit-source-id: 8f47826b13f8ce154398d842028342423f4ca2b2
2019-02-06 08:48:06 -08:00
Siying Dong
d9c9f3c809 db_bench: fix "micros/op" reporting (#4949)
Summary:
4985a9f73b (diff-e5276985b26a0551957144f4420a594bR511)
changes the meaning of latency reporting from running time per query, to elapse_time / #ops, without providing a reason why.
Considering that this is a counter-intuitive reporting, Reverting the change.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4949

Differential Revision: D13964684

Pulled By: siying

fbshipit-source-id: d6304d3d4b5a802daa292302623c7dbca9a680bc
2019-02-05 17:20:02 -08:00
Zhongyi Xie
71cae59a99 exclude test CompactFilesShouldTriggerAutoCompaction from ROCKSDB_LITE (#4950)
Summary:
This will fix the following build error:

> db/db_test.cc: In member function ‘virtual void rocksdb::DBTest_CompactFilesShouldTriggerAutoCompaction_Test::TestBody()’:
> db/db_test.cc:5462:8: error: ‘class rocksdb::DB’ has no member named ‘GetColumnFamilyMetaData’
>    db_->GetColumnFamilyMetaData(db_->DefaultColumnFamily(), &cf_meta_data);
> db/db_test.cc:5490:8: error: ‘class rocksdb::DB’ has no member named ‘GetColumnFamilyMetaData’
>    db_->GetColumnFamilyMetaData(db_->DefaultColumnFamily(), &cf_meta_data);
> db/db_test.cc:5499:8: error: ‘class rocksdb::DB’ has no member named ‘GetColumnFamilyMetaData’
>    db_->GetColumnFamilyMetaData(db_->DefaultColumnFamily(), &cf_meta_data);
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4950

Differential Revision: D13965378

Pulled By: miasantreble

fbshipit-source-id: a975435476fe555b1cd9d5da263ee3da3acdea56
2019-02-05 17:01:11 -08:00
Zhongyi Xie
00ed41daee Allow copy for PerfContext objects (#4919)
Summary:
Existing implementation of PerfContext does not define copy constructor or assignment operator, which could potentially cause problems when user create copies and resets the builtin one. This PR address the issue by providing these two constructors with deep copy semantics.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4919

Differential Revision: D13960406

Pulled By: miasantreble

fbshipit-source-id: 36aab5aaee65d4480f537e4e22148faa45e8e334
2019-02-05 14:29:08 -08:00
Jay Zhuang
c9a52cbdc8 Fix potential DB hang while using CompactFiles (#4940)
Summary:
CompactFiles() may block auto compaction which could cuase DB hang when it
reachs level0_stop_writes_trigger.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4940

Differential Revision: D13929648

Pulled By: cooldoger

fbshipit-source-id: 10842df38df3bebf862cd1a120a88ce961fdd381
2019-02-05 11:23:38 -08:00
Siying Dong
8fe073324f BYTES_READ stats miscount for NotFound cases (#4938)
Summary:
In NotFound cases, stats BYTES_READ and perf_context.get_read_bytes is still be increased. The amount increased will be
whatever size of the string or PinnableSlice that users passed in as the output data structure. This is wrong. Fix this by not
increasing these two counters.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4938

Differential Revision: D13908963

Pulled By: siying

fbshipit-source-id: 60bce42e4fbb9862bba3da36dbc27b2963ea6162
2019-02-05 10:53:35 -08:00
yangzhijia
31221bb7e8 Properly set upper bound of subcompaction output (#4879) (#4898)
Summary:
Fix the ouput overlap bug when using subcompactions, the upper bound of output
file was extended incorrectly.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4898

Differential Revision: D13736107

Pulled By: ajkr

fbshipit-source-id: 21dca09f81d5f07bf2766bf566f9b50dcab7d8e3
2019-02-05 10:20:16 -08:00
Maysam Yabandeh
dcb73e7735 WritePrepared: release snapshot equal to max (#4944)
Summary:
WritePrepared maintains a list of snapshots that are <= max_evicted_seq_. Based on this list, old_commit_map_ is updated if an evicted commit entry overlaps with such snapshot. Such lists are garbage collected when the release of snapshot is reported to WritePreparedTxnDB, which is the next time max_evicted_seq_ is updated and yet the snapshot is not found is the list returned from DB. This logic was broken since ReleaseSnapshotInternal was using "< max_evicted_seq_" to cleanup old_commit_map_, which would leave a snapshot uncleaned if it "= max_evicted_seq_". The patch fixes that and adds a unit test to check for the bug.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4944

Differential Revision: D13945000

Pulled By: maysamyabandeh

fbshipit-source-id: 0c904294f735911f52348a148bf1f945282fc17c
2019-02-04 12:57:23 -08:00
Maysam Yabandeh
30468d8eb4 Fix analyze error on possible un-initialized value (#4937)
Summary:
The patch fixes the following analyze error by checking the return status of ParseInternalKey.
```
db/merge_helper.cc:306:23: warning: The right operand of '==' is a garbage value
    assert(kTypeMerge == orig_ikey.type);
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4937

Differential Revision: D13908506

Pulled By: maysamyabandeh

fbshipit-source-id: 68d7771e75519da3d4bd807fd231675ec12093f6
2019-02-01 09:41:27 -08:00