Commit Graph

742 Commits

Author SHA1 Message Date
krad
7015fd81c4 Add read_nanos to IOStatsContext.
Summary: MyRocks need a mechanism to track read outliers. We need to expose this
stat.

Test Plan: None

Reviewers: sdong

CC: leveldb

Task ID: #7152512

Blame Rev:
2015-06-22 11:09:35 -07:00
Yueh-Hsuan Chiang
eade498bda Block utilities/write_batch_with_index in ROCKSDB_LITE
Summary:
Block utilities/write_batch_with_index in ROCKSDB_LITE as we
don't include anly utilities in ROCKSDB_LITE

Test Plan: write_batch_with_index_test

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

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D40347
2015-06-18 15:54:05 -07:00
Igor Canadi
760e9a94de Fail DB::Open() when the requested compression is not available
Summary:
Currently RocksDB silently ignores this issue and doesn't compress the data. Based on discussion, we agree that this is pretty bad because it can cause confusion for our users.

This patch fails DB::Open() if we don't support the compression that is specified in the options.

Test Plan: make check with LZ4 not present. If Snappy is not present all tests will just fail because Snappy is our default library. We should make Snappy the requirement, since without it our default DB::Open() fails.

Reviewers: sdong, MarkCallaghan, rven, yhchiang

Reviewed By: yhchiang

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39687
2015-06-18 14:55:05 -07:00
Aaron Feldman
69bb210d58 Add Cache.GetPinnedUsageUsage()
Summary:
  Add the funcion Cache.GetPinnedUsage() to return the memory size of entries
  that are in use by the system (that is, all the entries not in the LRU list).

Test Plan:
  Run ./cache_test and examine PinnedUsageTest.

Reviewers: tnovak, igor

Reviewed By: igor

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D40305
2015-06-18 13:56:31 -07:00
Islam AbdelRahman
4eabbdb7ec Skip bottommost level compaction if possible
Summary:
This is https://reviews.facebook.net/D39999 but after introducing an option to force compaction the bottom most level

Changes in this patch
- Introduce force_bottommost_level_compaction to CompactRangeOptions that force compacting bottommost level during compaction
- Skip bottommost level compaction if we dont have a compaction filter and force_bottommost_level_compaction options is not set

Although tests pass on my machine but I suspect that there maybe some tests that I am not aware of that  should use force_bottommost_level_compaction to pass in a deterministic way

Test Plan:
make check
adding new tests

Reviewers: igor, sdong, yhchiang

Reviewed By: yhchiang

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D40059
2015-06-18 11:03:31 -07:00
Igor Canadi
4b8bb62f0a Don't dump DBOptions for each column family
Summary: Currently we dump DBOptions for each column family options we dump. This leads to duplicate lines in our LOG file. This diff fixes that.

Test Plan: Check out the LOG

Reviewers: sdong, rven, yhchiang

Reviewed By: yhchiang

Subscribers: IslamAbdelRahman, yoshinorim, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39729
2015-06-18 10:15:54 -07:00
Islam AbdelRahman
12e030a992 Use CompactRangeOptions for CompactRange
Summary:
This diff update DB::CompactRange to use RangeCompactionOptions instead of using multiple parameters
Old CompactRange is still available but deprecated

Test Plan:
make all check
make rocksdbjava
USE_CLANG=1 make all
OPT=-DROCKSDB_LITE make release

Reviewers: sdong, yhchiang, igor

Reviewed By: igor

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D40209
2015-06-17 14:36:14 -07:00
Holodov Alexander
84a9c6a53a add comment 2015-05-16 15:29:39 +04:00
Holodov Alexander
eeb44366ba C api: human-readable statistics 2015-05-16 12:34:28 +04:00
sdong
40f562e747 Allow GetApproximateSize() to include mem table size if it is skip list memtable
Summary:
Add an option in GetApproximateSize() so that the result will include estimated sizes in mem tables.
To implement it, implement an estimated count from the beginning to a key in skip list. The approach is to count to find the entry, how many Next() is issued from each level, and sum them with a weight that is <branching factor> ^ <level>.

Test Plan: Add a test case

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D40119
2015-06-16 18:13:23 -07:00
sdong
7842920be5 Slow down writes by bytes written
Summary:
We slow down data into the database to the rate of options.delayed_write_rate (a new option) with this patch.

The thread synchronization approach I take is to still synchronize write controller by DB mutex and GetDelay() is inside DB mutex. Try to minimize the frequency of getting time in GetDelay(). I verified it through db_bench and it seems to work

hard_rate_limit is deprecated.

options.delayed_write_rate is still not dynamically changeable. Need to work on it as a follow-up.

Test Plan: Add new unit tests in db_test

Reviewers: yhchiang, rven, kradhakrishnan, anthony, MarkCallaghan, igor

Reviewed By: igor

Subscribers: ikabiljo, leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D36351
2015-06-11 20:42:18 -07:00
Islam AbdelRahman
d6ce0f7c61 Add largest sequence to FlushJobInfo
Summary:
Adding largest sequence number to FlushJobInfo
and passing flushed file metadata to NotifyOnFlushCompleted which include alot of other values that we may want to expose in FlushJobInfo

Test Plan: make check

Reviewers: igor, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D39927
2015-06-11 15:22:22 -07:00
Yueh-Hsuan Chiang
3eddd1abe9 Add Env::GetThreadID(), which returns the ID of the current thread.
Summary:
Add Env::GetThreadID(), which returns the ID of the current thread.

In addition, make GetThreadList() and InfoLog use same unique ID for the same thread.

Test Plan:
db_test
listener_test

Reviewers: igor, rven, IslamAbdelRahman, kradhakrishnan, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D39735
2015-06-11 14:18:02 -07:00
Igor Canadi
821cff114e Re-generate WriteEntry on WBWIIterator::Entry()
Summary:
[This is the resubmit of D39813. Tests were failing, so I reverted the diff. I found the bug and I'm now resubmitting]

If we don't do this, any calls to Entry() after WBWI mutation will result in undefined behavior. We need to re-fetch the offset from the skip list and regenerate the new pointer (because string's base pointer can change while mutating).

Test Plan: COMPILE_WITH_ASAN=1 make write_batch_with_index_test && ./write_batch_with_index_test

Reviewers: sdong

Reviewed By: sdong

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D39897
2015-06-10 12:57:38 -07:00
Igor Canadi
75222d130e Revert "Fix compile"
This reverts commit 51440f83ec.

Revert "Re-generate WriteEntry on WBWIIterator::Entry()"

This reverts commit 4949ef08db.
2015-06-10 11:05:27 -07:00
Igor Canadi
47f1e72125 Merge pull request #630 from rdallman/c-wb-logdata
C: add WriteBatch.PutLogData support
2015-06-10 10:50:28 -07:00
Igor Canadi
4949ef08db Re-generate WriteEntry on WBWIIterator::Entry()
Summary: If we don't do this, any calls to Entry() after WBWI mutation will result in undefined behavior. We need to re-fetch the offset from the skip list and regenerate the new pointer (because string's base pointer can change while mutating).

Test Plan: COMPILE_WITH_ASAN=1 make write_batch_with_index_test && ./write_batch_with_index_test

Reviewers: sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39813
2015-06-10 10:35:19 -07:00
Reed Allman
735df66552 C: add WriteBatch.PutLogData support 2015-06-10 00:12:33 -07:00
Islam AbdelRahman
643bbbf081 Use nullptr for default compaction_filter_factory
Summary:
Replacing the default value for compaction_filter_factory and compaction_filter_factory_v2 to be nullptr instead of DefaultCompactionFilterFactory / DefaultCompactionFilterFactoryV2
The reason for this is to be able to determine easily if we have compaction filter factory or not without depending on RTTI

Test Plan: make check

Reviewers: yoshinorim, ott, igor, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D39693
2015-06-08 16:34:26 -07:00
Igor Canadi
133130a4f5 Merge pull request #625 from rdallman/c-slice-parts-support
C: add support for WriteBatch SliceParts params
2015-06-08 13:14:44 -04:00
Igor Canadi
de4d172d0f Merge pull request #622 from rdallman/c-multiget
C: add MultiGet support
2015-06-08 13:13:54 -04:00
sdong
6df589b446 Add TablePropertiesCollector::NeedCompact() to suggest DB to further compact output files
Summary:
It is experimental. Allow users to return from a call back function TablePropertiesCollector::NeedCompact(), based on the data in the file.
It can be used to allow users to suggest DB to clear up delete tombstones faster.

Test Plan: Add a unit test.

Reviewers: igor, yhchiang, kradhakrishnan, rven

Reviewed By: rven

Subscribers: yoshinorim, MarkCallaghan, maykov, leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D39585
2015-06-05 20:18:21 -07:00
Yueh-Hsuan Chiang
2e764f06ea [API Change] Improve EventListener::OnFlushCompleted interface
Summary:
EventListener::OnFlushCompleted() now passes a structure instead
of a list of parameters.  This minimizes the API change in the
future.

Test Plan:
listener_test
compact_files_test
example/compact_files_example

Reviewers: kradhakrishnan, sdong, IslamAbdelRahman, rven, igor

Reviewed By: rven, igor

Subscribers: IslamAbdelRahman, rven, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39543
2015-06-05 12:28:51 -07:00
Yueh-Hsuan Chiang
bb808eaddb Changed the CompactionJobStats::output_key_prefix type from char[] to string.
Summary:
Keys in RocksDB can be arbitrary byte strings.  However, in the current
CompactionJobStats, smallest_output_key_prefix and largest_output_key_prefix
are of type char[] without having a length, which is insufficient to handle
non-null terminated strings.

This patch change their type to std::string.

Test Plan: compaction_job_stats_test

Reviewers: igor, rven, IslamAbdelRahman, kradhakrishnan, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39537
2015-06-04 12:31:12 -07:00
Yueh-Hsuan Chiang
0b3172d071 Add EventListener::OnTableFileDeletion()
Summary:
Add EventListener::OnTableFileDeletion(), which will be
called when a table file is deleted.

Test Plan: Extend three existing tests in db_test to verify the deleted files.

Reviewers: rven, anthony, kradhakrishnan, igor, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D38931
2015-06-03 19:57:01 -07:00
Reed Allman
211a195d41 C: add MultiGet support 2015-06-03 17:57:42 -07:00
Reed Allman
5dc174e11a C: add support for WriteBatch SliceParts params 2015-06-03 17:08:00 -07:00
Igor Canadi
408cc4b8e0 Revert "Merge pull request #621 from rdallman/c-slice-parts-support"
This reverts commit 78382d4ba7, reversing
changes made to ca8b85ac04.
2015-06-03 13:34:07 -04:00
Igor Canadi
78382d4ba7 Merge pull request #621 from rdallman/c-slice-parts-support
C: add support for WriteBatch SliceParts params
2015-06-03 13:16:14 -04:00
agiardullo
ca8b85ac04 better document max_write_buffer_number_to_maintain
Test Plan: compile

Reviewers: igor, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39285
2015-06-02 21:24:19 -07:00
Yueh-Hsuan Chiang
fe5c6321cb Allow EventListener::OnCompactionCompleted to return CompactionJobStats.
Summary:
Allow EventListener::OnCompactionCompleted to return CompactionJobStats,
which contains useful information about a compaction.

Example CompactionJobStats returned by OnCompactionCompleted():
    smallest_output_key_prefix 05000000
    largest_output_key_prefix 06990000
    elapsed_time 42419
    num_input_records 300
    num_input_files 3
    num_input_files_at_output_level 2
    num_output_records 200
    num_output_files 1
    actual_bytes_input 167200
    actual_bytes_output 110688
    total_input_raw_key_bytes 5400
    total_input_raw_value_bytes 300000
    num_records_replaced 100
    is_manual_compaction 1

Test Plan: Developed a mega test in db_test which covers 20 variables in CompactionJobStats.

Reviewers: rven, igor, anthony, sdong

Reviewed By: sdong

Subscribers: tnovak, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D38463
2015-06-02 17:07:16 -07:00
Yueh-Hsuan Chiang
8d8d4e45ba Fixed ROCKSDB_LITE compile error due to the missing of TableFileCreationInfo
Summary: Fixed ROCKSDB_LITE compile error due to the missing of TableFileCreationInfo

Test Plan: make OPT=-DROCKSDB_LITE shared_lib -j32

Reviewers: sdong, igor

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39405
2015-06-02 14:27:46 -07:00
Yueh-Hsuan Chiang
fc83821270 Add EventListener::OnTableFileCreated()
Summary:
Add EventListener::OnTableFileCreated(), which will be called
when a table file is created.  This patch is part of the
EventLogger and EventListener integration.

Test Plan: Augment existing test in db/listener_test.cc

Reviewers: anthony, kradhakrishnan, rven, igor, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D38865
2015-06-02 14:12:23 -07:00
sdong
ac81130fa0 Fix Bug: CompactRange() doesn't change to correct level caused by using wrong level
Summary: In previous change https://reviews.facebook.net/D39099 , while renaming parameters, use a wrong parameter, causing CompactRange() to compact not wrong level.

Test Plan: Run "DBTest.MigrateToDynamicLevelMaxBytesBase" which failed with the patch.

Reviewers: rven, yhchiang, kradhakrishnan, igor, anthony

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D39393
2015-06-02 10:00:58 -07:00
Mike Kolupaev
ec7a944360 more times in perf_context and iostats_context
Summary:
We occasionally get write stalls (>1s Write() calls) on HDD under read load. The following timers explain almost all of the stalls:
 - perf_context.db_mutex_lock_nanos
 - perf_context.db_condition_wait_nanos
 - iostats_context.open_time
 - iostats_context.allocate_time
 - iostats_context.write_time
 - iostats_context.range_sync_time
 - iostats_context.logger_time

In my experiments each of these occasionally takes >1s on write path under some workload. There are rare cases when Write() takes long but none of these takes long.

Test Plan: Added code to our application to write the listed timings to log for slow writes. They usually add up to almost exactly the time Write() call took.

Reviewers: rven, yhchiang, sdong

Reviewed By: sdong

Subscribers: march, dhruba, tnovak

Differential Revision: https://reviews.facebook.net/D39177
2015-06-02 02:07:58 -07:00
sdong
4266d4fd90 Allow users to migrate to options.level_compaction_dynamic_level_bytes=true using CompactRange()
Summary: In DB::CompactRange(), change parameter "reduce_level" to "change_level". Users can compact all data to the last level if needed. By doing it, users can migrate the DB to options.level_compaction_dynamic_level_bytes=true.

Test Plan: Add a unit test for it.

Reviewers: yhchiang, anthony, kradhakrishnan, igor, rven

Reviewed By: rven

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D39099
2015-06-01 18:21:14 -07:00
Mike Kolupaev
2ecac9f96d add rocksdb::WritableFileWrapper similar to rocksdb::EnvWrapper
Summary: It used to be no good (known to me) non-intrusive way to wrap WritableFile - you can't call protected virtual methods of the wrapped pointer to WritableFile. This diff adds a convenience class WritableFileWrapper that makes wrapping WritableFile both possible and easy.

Test Plan: `make clean; make -j release`, `make clean; OPT=-DROCKSDB_LITE make release`, `make clean; USE_CLANG=1 make -j all`.

Reviewers: sdong, yhchiang, rven

Reviewed By: rven

Subscribers: dhruba, tnovak, march

Differential Revision: https://reviews.facebook.net/D39147
2015-06-01 11:22:36 -07:00
Igor Canadi
a187e66ad0 Merge pull request #617 from rdallman/wb-merge-sliceparts
WriteBatch.Merge w/ SliceParts support
2015-05-31 13:34:34 -04:00
agiardullo
dc9d70de65 Optimistic Transactions
Summary: Optimistic transactions supporting begin/commit/rollback semantics.  Currently relies on checking the memtable to determine if there are any collisions at commit time.  Not yet implemented would be a way of enuring the memtable has some minimum amount of history so that we won't fail to commit when the memtable is empty.  You should probably start with transaction.h to get an overview of what is currently supported.

Test Plan: Added a new test, but still need to look into stress testing.

Reviewers: yhchiang, igor, rven, sdong

Reviewed By: sdong

Subscribers: adamretter, MarkCallaghan, leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D33435
2015-05-29 14:36:35 -07:00
Yueh-Hsuan Chiang
ebfdb3c7f6 Fixed a compile error in ROCKSDB_LITE
Summary: Fixed a compile error in ROCKSDB_LITE

Test Plan: make db_stress OPT=-DROCKSDB_LITE -j32

Reviewers: sdong, igor, anthony

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39201
2015-05-29 13:21:09 -07:00
Yueh-Hsuan Chiang
9ffc8ba024 Include EventListener in stress test.
Summary: Include EventListener in stress test.

Test Plan: make blackbox_crash_test whitebox_crash_test

Reviewers: anthony, igor, rven, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39105
2015-05-29 13:17:49 -07:00
Reed Allman
21cd6b7ad8 C: add support for WriteBatch SliceParts params 2015-05-29 10:23:43 -07:00
Reed Allman
a0635ba3f6 WriteBatch.Merge w/ SliceParts support
also hooked up WriteBatchInternal
2015-05-29 04:30:03 -07:00
agiardullo
c815351038 Support saving history in memtable_list
Summary:
For transactions, we are using the memtables to validate that there are no write conflicts.  But after flushing, we don't have any memtables, and transactions could fail to commit.  So we want to someone keep around some extra history to use for conflict checking.  In addition, we want to provide a way to increase the size of this history if too many transactions fail to commit.

After chatting with people, it seems like everyone prefers just using Memtables to store this history (instead of a separate history structure).  It seems like the best place for this is abstracted inside the memtable_list.  I decide to create a separate list in MemtableListVersion as using the same list complicated the flush/installalflushresults logic too much.

This diff adds a new parameter to control how much memtable history to keep around after flushing.  However, it sounds like people aren't too fond of adding new parameters.  So I am making the default size of flushed+not-flushed memtables be set to max_write_buffers.  This should not change the maximum amount of memory used, but make it more likely we're using closer the the limit.  (We are now postponing deleting flushed memtables until the max_write_buffer limit is reached).  So while we might use more memory on average, we are still obeying the limit set (and you could argue it's better to go ahead and use up memory now instead of waiting for a write stall to happen to test this limit).

However, if people are opposed to this default behavior, we can easily set it to 0 and require this parameter be set in order to use transactions.

Test Plan: Added a xfunc test to play around with setting different values of this parameter in all tests.  Added testing in memtablelist_test and planning on adding more testing here.

Reviewers: sdong, rven, igor

Reviewed By: igor

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D37443
2015-05-28 16:34:24 -07:00
Yueh-Hsuan Chiang
672dda9b3b [API Change] Move listeners from ColumnFamilyOptions to DBOptions
Summary: Move listeners from ColumnFamilyOptions to DBOptions

Test Plan:
listener_test
compact_files_test

Reviewers: rven, anthony, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39087
2015-05-28 13:21:39 -07:00
Reed Allman
9c38ce1d02 C: extra bbto / noop slice transform 2015-05-22 22:56:28 -07:00
Igor Canadi
4cb4d546cd Set stats_dump_period_sec to 600 by default
Summary: Having stats in our LOG more often will help a lot with perf debugging.

Test Plan: none

Reviewers: sdong, MarkCallaghan

Reviewed By: MarkCallaghan

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D38781
2015-05-21 14:22:16 -04:00
Yueh-Hsuan Chiang
e2c1d4b57f [Public API Change] Make DB::GetDbIdentity() be const function.
Summary: Make DB::GetDbIdentity() be const function.

Test Plan: make db_test

Reviewers: igor, rven, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D38745
2015-05-21 11:01:48 -07:00
Igor Canadi
4a855c0799 Add an option wal_bytes_per_sync to control sync_file_range for WAL files
Summary:
sync_file_range is not always asyncronous and thus can block writes if we do this for WAL in the foreground thread. See more here: http://yoshinorimatsunobu.blogspot.com/2014/03/how-syncfilerange-really-works.html

Some users don't want us to call sync_file_range on WALs. Some other do.
Thus, I'm adding a separate option wal_bytes_per_sync to control calling
sync_file_range on WAL files. bytes_per_sync will apply only to table
files now.

Test Plan: no more sync_file_range for WAL as evidenced by strace

Reviewers: yhchiang, rven, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D38253
2015-05-18 17:03:59 -07:00
sdong
6fa7085121 CompactRange skips levels 1 to base_level -1 for dynamic level base size
Summary: CompactRange() now is much more expensive for dynamic level base size as it goes through all the levels. Skip those not used levels between level 0 an base level.

Test Plan: Run all unit tests

Reviewers: yhchiang, rven, anthony, kradhakrishnan, igor

Reviewed By: igor

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D37125
2015-05-18 10:54:11 -07:00