Commit Graph

2208 Commits

Author SHA1 Message Date
sdong
19ea40f8b6 Subcompaction boundary keys should not terminate after an empty level
Summary: Now we skip to add boundary keys to subcompaction candidates since we see an empty level. This makes subcompaction almost disabled for universal compaction. We should consider all files instead.

Test Plan: Run existing tests.

Reviewers: IslamAbdelRahman, andrewkr, yhchiang

Reviewed By: yhchiang

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D55005
2016-03-02 15:45:07 -08:00
sdong
74b660702e Rename iterator property "rocksdb.iterator.is.key.pinned" => "rocksdb.iterator.is-key-pinned"
Summary: Rename iterator property to folow property naming convention.

Test Plan: Run all existing tests.

Reviewers: andrewkr, anthony, yhchiang, kradhakrishnan, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D54957
2016-03-01 13:47:12 -08:00
Islam AbdelRahman
6743135ea1 Fix DB::AddFile() issue when PurgeObsoleteFiles() is called
Summary:
In some situations the DB will scan all existing files in the DB path and delete the ones that are Obsolete.
If this happen during adding an external sst file. this could cause the file to be deleted while we are adding it.
This diff fix this issue

Test Plan:
unit test to reproduce the bug
existing unit tests

Reviewers: sdong, yhchiang, andrewkr

Reviewed By: andrewkr

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D54627
2016-03-01 12:05:29 -08:00
sdong
432f3adf2c Add DB Property "rocksdb.current_version_number"
Summary: Add a DB Property "rocksdb.current_version_number" for users to monitor version changes and stale iterators.

Test Plan: Add a unit test.

Reviewers: andrewkr, yhchiang, kradhakrishnan, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D54927
2016-03-01 10:55:40 -08:00
sdong
b5b1db167a Recompute compaction score after scheduling manual compaction
Summary: After we made manual compaction runnable concurrently with automaticallly compaction, we need to run ComputeCompactionScore() to prepare a coming compaction picking call before the compaction finishes.

Test Plan: Run existing tests.

Reviewers: yhchiang, IslamAbdelRahman, andrewkr, kradhakrishnan, anthony, igor

Reviewed By: igor

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D54891
2016-02-29 17:17:51 -08:00
sdong
1f5954147b Introduce Iterator::GetProperty() and replace Iterator::IsKeyPinned()
Summary:
Add Iterator::GetProperty(), a way for users to communicate with iterator, and turn Iterator::IsKeyPinned() with it.
As a follow-up, I'll ask a property as the version number attached to the iterator

Test Plan: Rerun existing tests and add a negative test case.

Reviewers: yhchiang, andrewkr, kradhakrishnan, anthony, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D54783
2016-02-29 14:01:31 -08:00
Andrew Kryczka
69c471bd9b Handle concurrent manifest update and backup creation
Summary:
Fixed two related race conditions in backup creation.

(1) CreateNewBackup() uses DB::DisableFileDeletions() to prevent table files
from being deleted while it is copying; however, the MANIFEST file could still
rotate during this time. The fix is to stop deleting the old manifest in the
rotation logic. It will be deleted safely later when PurgeObsoleteFiles() runs
(can only happen when file deletions are enabled).

(2) CreateNewBackup() did not account for the CURRENT file being mutable.
This is significant because the files returned by GetLiveFiles() contain a
particular manifest filename, but the manifest to which CURRENT refers can
change at any time. This causes problems when CURRENT changes between the call
to GetLiveFiles() and when it's copied to the backup directory. To workaround this, I
manually forge a CURRENT file referring to the manifest filename returned in
GetLiveFiles().

(2) also applies to the checkpointing code, so let me know if this approach is
good and I'll make the same change there.

Test Plan:
new test for roll manifest during backup creation.

running the test before this change:

  $ ./backupable_db_test --gtest_filter=BackupableDBTest.ChangeManifestDuringBackupCreation
  ...
  IO error: /tmp/rocksdbtest-9383/backupable_db/MANIFEST-000001: No such file or directory

running the test after this change:

  $ ./backupable_db_test --gtest_filter=BackupableDBTest.ChangeManifestDuringBackupCreation
  ...
  [ RUN      ] BackupableDBTest.ChangeManifestDuringBackupCreation
  [       OK ] BackupableDBTest.ChangeManifestDuringBackupCreation (2836 ms)

Reviewers: IslamAbdelRahman, anthony, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D54711
2016-02-29 12:56:55 -08:00
sdong
8800975fb0 Make DBTestUniversalCompaction.IncreaseUniversalCompactionNumLevels more robust
Summary:
Based on thread scheduling, DBTestUniversalCompaction.IncreaseUniversalCompactionNumLevels can fail to flush enough files to trigger expected compactions. Fix it by waiting for flush after inserting each key.
There are failrue reported:

db/db_universal_compaction_test.cc:1134: Failure
Expected: (NumTableFilesAtLevel(options.num_levels - 1, 1)) > (0), actual: 0 vs 0

but I can't repro it. Try to fix the bug and see whether it goes away.

Test Plan: Run the test multiple time.

Reviewers: IslamAbdelRahman, anthony, andrewkr, kradhakrishnan, yhchiang

Reviewed By: yhchiang

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D54747
2016-02-26 11:59:31 -08:00
sdong
82f15fb15d Add test to make sure DropColumnFamily doesn't impact existing iterators
Summary: Add a test case in ColumnFamilyTest.ReadDroppedColumnFamily to make sure existing iterator is not impacted by column family dropping.

Test Plan: N/A

Reviewers: igor, yhchiang, anthony, andrewkr, kradhakrishnan, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D54657
2016-02-24 10:25:38 -08:00
sdong
38201b3599 Fix assert failure when DBImpl::SyncWAL() conflicts with log rolling
Summary: DBImpl::SyncWAL() releases db mutex before calling DBImpl::MarkLogsSynced(), while inside DBImpl::MarkLogsSynced() we assert there is none or one outstanding log file. However, a memtable switch can happen in between and causing two or outstanding logs there, failing the assert. The diff adds a unit test that repros the issue and fix the assert so that the unit test passes.

Test Plan: Run the new tests.

Reviewers: anthony, kolmike, yhchiang, IslamAbdelRahman, kradhakrishnan, andrewkr

Reviewed By: andrewkr

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D54621
2016-02-23 11:42:15 -08:00
Andrew Kryczka
b046916656 Redo SyncPoints for flush while rolling test
Summary:
There was a race condition in the test where the rolling thread
acquired the mutex before the flush thread pinned the logger. Rather than add
more complicated synchronization to fix it, I followed Siying's suggestion to
use SyncPoint in the test code.

Comments in the LoadDependency() invocation explain the reason for each of the
sync points.

Test Plan:
Ran test 1000 times for tsan/asan. Will wait for all sandcastle tests
to finish before committing since this is a tricky test.

Reviewers: IslamAbdelRahman, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D54615
2016-02-22 21:32:19 -08:00
Mike Kolupaev
eef63ef807 Fixed CompactFiles() spuriously failing or corrupting DB
Summary:
We started getting two kinds of crashes since we started using `DB::CompactFiles()`:
(1) `CompactFiles()` fails saying something like "/data/logdevice/4440/shard12/012302.sst: No such file or directory", and presumably makes DB read-only,
(2) DB fails to open saying "Corruption: Can't access /267000.sst: IO error: /data/logdevice/4440/shard1/267000.sst: No such file or directory".

AFAICT, both can be explained by background thread deleting compaction output as "obsolete" while it's being written, before it's committed to manifest. If it ends up committed to the manifest, we get (2); if compaction notices the disappearance and fails, we get (1). The internal tasks t10068021 and t10134177 have some details about the investigation that led to this.

Test Plan: `make -j check`; the new test fails to reopen the DB without the fix

Reviewers: yhchiang

Reviewed By: yhchiang

Subscribers: dhruba, sdong

Differential Revision: https://reviews.facebook.net/D54561
2016-02-22 13:54:58 -08:00
Dmitri Smirnov
d37d348da8 This addresses build issues on Windows
https://github.com/facebook/rocksdb/issues/1002
2016-02-19 12:29:54 -08:00
Andrew Kryczka
d825fc70d4 Use condition variable in log roller test
Summary:
Previously I just slept until the flush_thread was "probably" ready
since proper synchronization in test cases seemed like overkill. But then tsan
complained about it, so I did the synchronization (mostly) properly now.

Test Plan:
  $ COMPILE_WITH_TSAN=1 make -j32 auto_roll_logger_test
  $ ./auto_roll_logger_test

Reviewers: anthony, IslamAbdelRahman, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D54399
2016-02-18 18:03:53 -08:00
Islam AbdelRahman
df9ba6df62 Introduce SstFileManager::SetMaxAllowedSpaceUsage() to cap disk space usage
Summary:
Introude SstFileManager::SetMaxAllowedSpaceUsage() that can be used to limit the maximum space usage allowed for RocksDB.
When this limit is exceeded WriteImpl() will fail and return Status::Aborted()

Test Plan: unit testing

Reviewers: yhchiang, anthony, andrewkr, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D53763
2016-02-17 15:20:23 -08:00
Andrew Kryczka
3943d16780 Fix race conditions in auto-rolling logger
Summary:
For GetLogFileSize() and Flush(), they previously did not follow the
synchronization pattern for accessing logger_. This meant ResetLogger() could
cause logger_ destruction while the unsynchronized functions were accessing it,
causing a segfault.

Also made the mutex instance variable mutable so we can preserve
GetLogFileSize()'s const-ness.

Test Plan:
new test case, it's quite ugly because both threads need to access
one of the functions with SyncPoints (PosixLogger::Flush()), and also special
handling is needed to prevent the mutex and sync points from conflicting.

Reviewers: kradhakrishnan, IslamAbdelRahman, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D54237
2016-02-17 12:06:45 -08:00
reid horuff
a7b6f0748a Improve write_with_callback_test to sync WAL
Summary: Currently write_with_callback_test does not test with WAL syncing enabled. This addresses that.

Test Plan: write_with_callback_test

Reviewers: anthony

Reviewed By: anthony

Subscribers: leveldb, dhruba, hermanlee4

Differential Revision: https://reviews.facebook.net/D54255
2016-02-16 14:04:14 -08:00
reid horuff
5bcf952a87 Fix WriteImpl empty batch hanging issue
Summary: There is an issue in DBImpl::WriteImpl where if an empty writebatch comes in and sync=true then the logs will be marked as being synced yet the sync never actually happens because there is no data in the writebatch. This causes the next incoming batch to hang while waiting for the logs to complete syncing. This fix syncs logs even if the writebatch is empty.

Test Plan: DoubleEmptyBatch unit test in transaction_test.

Reviewers: yoshinorim, hermanlee4, sdong, ngbronson, anthony

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D54057
2016-02-16 12:21:33 -08:00
Mike Kolupaev
44371501f0 Fixed a segfault when compaction fails
Summary: We've hit it today.

Test Plan: `make -j check`; didn't reproduce the issue

Reviewers: yhchiang

Reviewed By: yhchiang

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D54219
2016-02-16 11:11:16 -08:00
Jonathan Wiepert
7bd284c374 Separeate main from bench functionality to allow cusomizations
Summary: Isolate db_bench functionality from main so custom benchmark code can be written and managed

Test Plan:
Tested commands
./build_tools/regression_build_test.sh
./db_bench --db=/tmp/rocksdbtest-12321/dbbench --stats_interval_seconds=1 --num=1000
./db_bench --db=/tmp/rocksdbtest-12321/dbbench --stats_interval_seconds=1 --num=1000 --reads=500 --writes=500
./db_bench --db=/tmp/rocksdbtest-12321/dbbench --stats_interval_seconds=1 --num=1000 --merge_keys=100 --numdistinct=100 --num_column_families=3 --num_hot_column_families=1
./db_bench --stats_interval_seconds=1 --num=1000 --bloom_locality=1 --seed=5 --threads=5
./db_bench --duration=60 --value_size=50 --seek_nexts=10 --reverse_iterator=true --usee_uint64_comparator=true --batch-size=5
./db_bench --duration=60 --value_size=50 --seek_nexts=10 --reverse_iterator=true --use_uint64_comparator=true --batch_size=5
./db_bench --duration=60 --value_size=50 --seek_nexts=10 --reverse_iterator=true --usee_uint64_comparator=true --batch-size=5

Test Results - https://phabricator.fb.com/P56130387

Additional tests for:
./db_bench --duration=60 --value_size=50 --seek_nexts=10 --reverse_iterator=true --use_uint64_comparator=true --batch_size=5 --key_size=8 --merge_operator=put
./db_bench --stats_interval_seconds=1 --num=1000 --bloom_locality=1 --seed=5 --threads=5 --merge_operator=uint64add

Results: https://phabricator.fb.com/P56130607

Reviewers: yhchiang, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D53991
2016-02-16 06:17:31 -08:00
sdong
92a9ccf1a6 Add a new compaction priority that picks file whose overlapping ratio is smallest
Summary:
Add a new compaction priority as following:
For every file, we calculate total size of files overalapping with the file in the next level, over the file's size itself. The file with smallest ratio will be picked first.
My "db_bench --fillrandom" shows about 5% less compaction than kOldestSmallestSeqFirst if --hard_pending_compaction_bytes_limit value to keep LSM tree in shape. If not limiting hard_pending_compaction_bytes_limit, improvement is only 1% or 2%.

Test Plan: Add a unit test

Reviewers: andrewkr, kradhakrishnan, anthony, IslamAbdelRahman, yhchiang

Reviewed By: yhchiang

Subscribers: MarkCallaghan, leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D54075
2016-02-11 15:59:19 -08:00
Peter Mattis
239aaf2fc0 Use user_comparator when comparing against iterate_upper_bound.
Fixes #983.
2016-02-11 08:47:16 -05:00
Baraa Hamodi
21e95811d1 Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
Yueh-Hsuan Chiang
4a8cbf4e31 Allows Get and MultiGet to read directly from SST files.
Summary:
Add kSstFileTier to ReadTier, which allows Get and MultiGet to
read only directly from SST files and skip mem-tables.

    kSstFileTier = 0x2      // data in SST files.
                          // Note that this ReadTier currently only supports
                          // Get and MultiGet and does not support iterators.

Test Plan: add new test in db_test.

Reviewers: anthony, IslamAbdelRahman, rven, kradhakrishnan, sdong

Reviewed By: sdong

Subscribers: igor, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D53511
2016-02-09 11:20:22 -08:00
sdong
a76e9093f0 Fix LITE db_test build broken by previous commit
Summary: Previous commit introduces a test that is not supported in LITE. Fix it.

Test Plan: Build the test with ROCKSDB_LITE.

Reviewers: kradhakrishnan, IslamAbdelRahman, anthony, yhchiang, andrewkr

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D53901
2016-02-05 14:29:09 -08:00
sdong
b1887c5dd9 Explictly fail when memtable doesn't support concurrent insert
Summary: If users turn on concurrent insert but the memtable doesn't support it, they might see unexcepted crash. Fix it by explicitly fail.

Test Plan:
Run different setting of stress_test and make sure it fails correctly.
Will add a unit test too.

Reviewers: anthony, kradhakrishnan, IslamAbdelRahman, yhchiang, andrewkr, ngbronson

Reviewed By: ngbronson

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D53895
2016-02-05 14:15:50 -08:00
reid horuff
6f71d3b68b Improve perf of Pessimistic Transaction expirations (and optimistic transactions)
Summary:
copy from task 8196669:

1) Optimistic transactions do not support batching writes from different threads.
2) Pessimistic transactions do not support batching writes if an expiration time is set.

In these 2 cases, we currently do not do any write batching in DBImpl::WriteImpl() because there is a WriteCallback that could decide at the last minute to abort the write.  But we could support batching write operations with callbacks if we make sure to process the callbacks correctly.

To do this, we would first need to modify write_thread.cc to stop preventing writes with callbacks from being batched together.  Then we would need to change DBImpl::WriteImpl() to call all WriteCallback's in a batch, only write the batches that succeed, and correctly set the state of each batch's WriteThread::Writer.

Test Plan: Added test WriteWithCallbackTest to write_callback_test.cc which creates multiple client threads and verifies that writes are batched and executed properly.

Reviewers: hermanlee4, anthony, ngbronson

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D52863
2016-02-05 10:44:13 -08:00
Islam AbdelRahman
8e6172bc57 Add BlockBasedTableOptions::index_block_restart_interval
Summary: Add a new option to BlockBasedTableOptions that will allow us to change the restart interval for the index block

Test Plan: unit tests

Reviewers: yhchiang, anthony, andrewkr, sdong

Reviewed By: sdong

Subscribers: march, dhruba

Differential Revision: https://reviews.facebook.net/D53721
2016-02-05 10:22:37 -08:00
Nathan Bronson
2c1db5ea51 always invalidate sequential-insertion cache for concurrent skiplist adds
Summary:
InlineSkipList::InsertConcurrently should invalidate the
sequential-insertion cache prev_[] for all inserts of multi-level nodes,
not just those that increase the height of the skip list.  The invariant
for prev_ is that prev_[i] (i > 0) is supposed to be the predecessor of
prev_[0] at level i.  Before this diff InsertConcurrently could violate
this constraint when inserting a multi-level node after prev_[i] but
before prev_[0].

This diff also reenables kConcurrentSkipList as db_test's
MultiThreaded/MultiThreadedDBTest.MultiThreaded/29.

Test Plan:
1. unit tests
2. temporarily hack kConcurrentSkipList timing so that it is fast but has a 1.5% failure rate on my dev box (1ms stagger on thread launch, 1s test duration, failure rate baseline over 1000 runs)
3. observe 1000 passes post-fix

Reviewers: igor, sdong

Reviewed By: sdong

Subscribers: MarkCallaghan, dhruba

Differential Revision: https://reviews.facebook.net/D53751
2016-02-03 11:08:16 -08:00
Andrew Kryczka
284aa613a7 Eliminate duplicated property constants
Summary:
Before this diff, there were duplicated constants to refer to properties (user-
facing API had strings and InternalStats had an enum). I noticed these were
inconsistent in terms of which constants are provided, names of constants, and
documentation of constants. Overall it seemed annoying/error-prone to maintain
these duplicated constants.

So, this diff gets rid of InternalStats's constants and replaces them with a map
keyed on the user-facing constant. The value in that map contains a function
pointer to get the property value, so we don't need to do string matching while
holding db->mutex_. This approach has a side benefit of making many small
handler functions rather than a giant switch-statement.

Test Plan: db_properties_test passes, running "make commit-prereq -j32"

Reviewers: sdong, yhchiang, kradhakrishnan, IslamAbdelRahman, rven, anthony

Reviewed By: anthony

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D53253
2016-02-02 19:14:56 -08:00
Nathan Bronson
5fcd1ba30a disable kConcurrentSkipList multithreaded test
Summary: Disable test that is intermittently failing

Test Plan: unit tests

Reviewers: igor, andrewkr, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D53715
2016-02-02 18:24:47 -08:00
Tomas Kolda
a62c519bb6 RollLogFile tries to find non conflicting file until there is no conflict. 2016-02-02 10:33:49 +01:00
Tomas Kolda
57a95a7001 Making use of GetSystemTimePreciseAsFileTime dynamic - code review fixes 2016-02-02 10:23:56 +01:00
Tomas Kolda
502d41f150 Making use of GetSystemTimePreciseAsFileTime dynamic to not
break compatibility with Windows 7. The issue with rotated logs
was fixed other way.
2016-02-02 10:23:56 +01:00
Nathan Bronson
9c2cf9479b Fix for --allow_concurrent_memtable_write with batching
Summary:
Concurrent memtable adds were incorrectly computing
the last sequence number for a write batch group when the
write batches were not solitary.  This is the cause of
https://github.com/facebook/mysql-5.6/issues/155

Test Plan:
1. unit tests
2. new unit test
3. parallel db_bench stress tests with batch size of 10 and asserts enabled

Reviewers: igor, sdong

Reviewed By: sdong

Subscribers: IslamAbdelRahman, MarkCallaghan, dhruba

Differential Revision: https://reviews.facebook.net/D53595
2016-02-01 20:41:57 -08:00
Siying Dong
7b943da1b2 Merge pull request #967 from SherlockNoMad/ValueSize
Add histogram for value size per operation
2016-02-01 17:59:08 -08:00
Islam AbdelRahman
1ad8182950 Fix WriteBatchTest.ManyUpdates, WriteBatchTest.LargeKeyValue under clang
Summary:
Fix current clang failure
https://ci-builds.fb.com/view/rocksdb/job/rocksdb_clang_build/1398/console

Test Plan:
make sure that both clang and g++ compilation succeed

USE_CLANG=1 make check -j64
make check -j64

Reviewers: anthony, yhchiang, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D53667
2016-02-01 16:07:53 -08:00
sdong
ad7ecca72d Add unit tests to verify large key/value
Summary:
Add unit tests:
(1) insert entries of 8MB key and 3GB value to DB
(2) insert entry of 3GB key and 3GB value into write batch and make sure we can read it.
(3) insert 3 billions of key-value pairs into write batch and make sure we can read it.
Disable them because not all platform can run it.

Test Plan: Run the tests

Reviewers: IslamAbdelRahman, yhchiang, kradhakrishnan, andrewkr, anthony

Reviewed By: anthony

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D53619
2016-02-01 15:09:50 -08:00
Andrew Kryczka
fdd70d1495 Skip filters for last L0 file if hit-optimized
Summary:
Following up on D53493, we can still enable the filter-skipping
optimization for last file in L0. It's correct to assume the key will be present
in the last L0 file when we're hit-optimized and L0 is deepest.

The FilePicker encapsulates the state for traversing each level's files, so I
needed to make it expose whether the returned file is last in its level.

Test Plan:
verified below test fails before this patch and passes afterwards.
The change to how the test memtable is populated is needed so file 1 has keys
(0, 30, 60), file 2 has keys (10, 40, 70), etc.

  $ ./db_universal_compaction_test --gtest_filter=UniversalCompactionNumLevels/DBTestUniversalCompaction.OptimizeFiltersForHits/*

Reviewers: sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D53583
2016-02-01 14:58:46 -08:00
Dmytro Ivchenko
aa5e3b7c04 PerfContext::ToString() add option to exclude zero counters
Test Plan: Added unit test to check w/ w/o zeros scenarios

Reviewers: yhchiang

Reviewed By: yhchiang

Subscribers: sdong, dhruba

Differential Revision: https://reviews.facebook.net/D52809
2016-02-01 13:41:13 -08:00
Yueh-Hsuan Chiang
1d854fa3d4 Fixed the asan error on column_family_test
Summary:
Fixed the asan error on column_family_test caused by not disabling
SyncPoint.

Test Plan: column_family_test

Reviewers: anthony, rven, kradhakrishnan, sdong, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D53505
2016-02-01 12:45:45 -08:00
SherlockNoMad
37159a6448 Add histogram for value size per operation 2016-01-31 18:09:24 -08:00
Venkatesh Radhakrishnan
3b2a1ddd2e Add options.base_background_compactions as a number of compaction threads for low compaction debt
Summary:
If options.base_background_compactions is given, we try to schedule number of compactions not existing this number, only when L0 files increase to certain number, or pending compaction bytes more than certain threshold, we schedule compactions based on options.max_background_compactions.

The watermarks are calculated based on slowdown thresholds.

Test Plan:
Add new test cases in column_family_test.
Adding more unit tests.

Reviewers: IslamAbdelRahman, yhchiang, kradhakrishnan, rven, anthony

Reviewed By: anthony

Subscribers: leveldb, dhruba, yoshinorim

Differential Revision: https://reviews.facebook.net/D53409
2016-01-29 16:15:53 -08:00
sdong
6ee38bb15c Slowdown of writing to the last memtable should not override stopping
Summary: Now slowing down for the last mem table takes priority against some stopping conditions. This is logically confusing. Fix it.

Test Plan: Run all existing tests.

Reviewers: yhchiang, IslamAbdelRahman, kradhakrishnan, andrewkr, anthony

Reviewed By: anthony

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D53529
2016-01-28 21:52:29 -08:00
Islam AbdelRahman
d6c838f1e1 Add SstFileManager (component tracking all SST file in DBs and control the deletion rate)
Summary:
Add a new class SstFileTracker that will be notified whenever a DB add/delete/move and sst file, it will also replace DeleteScheduler
SstFileTracker can be used later to abort writes when we exceed a specific size

Test Plan: unit tests

Reviewers: rven, anthony, yhchiang, sdong

Reviewed By: sdong

Subscribers: igor, lovro, march, dhruba

Differential Revision: https://reviews.facebook.net/D50469
2016-01-28 18:35:01 -08:00
sdong
4b50f13540 Should not skip bloom filter for L0 during the query.
Summary: It's a regression bug caused by e089db40f9. With the change, if options.optimize_filters_for_hits=true and there are only L0 files (like single level universal compaction), we skip all the files in L0, which is more than necessary. Fix it by always trying to query bloom filter for files in level 0.

Test Plan: Add a unit test for it.

Reviewers: anthony, rven, yhchiang, IslamAbdelRahman, kradhakrishnan, andrewkr

Reviewed By: andrewkr

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D53493
2016-01-27 16:16:39 -08:00
sdong
d20915d52a Disable stats about mutex duration by default
Summary: Measuring mutex duration will measure time inside DB mutex, which breaks our best practice. Add a stat level in Statistics class. By default, disable to measure the mutex operations.

Test Plan: Add a unit test to make sure it is off by default.

Reviewers: rven, anthony, IslamAbdelRahman, kradhakrishnan, andrewkr, yhchiang

Reviewed By: yhchiang

Subscribers: MarkCallaghan, leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D53367
2016-01-26 14:56:55 -08:00
Islam AbdelRahman
0c433cd1eb Fix issue in Iterator::Seek when using Block based filter block with prefix_extractor
Summary: Similar to D53385 we need to check InDomain before checking the filter block.

Test Plan: unit tests

Reviewers: yhchiang, rven, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D53421
2016-01-26 14:47:42 -08:00
Andrew Kryczka
035857a312 Fix RocksDB lite build
Summary:
NewMemEnv() is defined in rocksdb lite but just returns nullptr --
would it be better to just not define it so we can catch issues like this at
compile-time?

Test Plan:
  $ make clean && OPT="-DTRAVIS -DROCKSDB_LITE" V=1 make -j32 db_test
  $ ./db_test --gtest_filter='DBTest.MemEnvTest'
  ...
  [  PASSED  ] 0 tests.

Reviewers: yhchiang, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D53427
2016-01-26 13:15:36 -08:00
Yueh-Hsuan Chiang
955ecf8b49 Fix an ASAN error in compact_files_test
Summary:
compact_files_test enables SyncPoint but never disable it before
the test terminates.  As a result, it might cause heap-use-after-free
error when some code path trying to access the static variable of
SyncPoint when it has already gone out of scope after the main thread
dies.

Test Plan:
COMPILE_WITH_ASAN=1 make compact_files_test -j32
./compact_files_test

Reviewers: sdong, anthony, kradhakrishnan, rven, andrewkr, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D53379
2016-01-26 11:30:30 -08:00