Commit Graph

1436 Commits

Author SHA1 Message Date
Andrew Kryczka
e2c6c06366 add TimedEnv
Summary:
I've needed Env timing measurements a few times now, so finally built something for it.
Closes https://github.com/facebook/rocksdb/pull/2073

Differential Revision: D4811231

Pulled By: ajkr

fbshipit-source-id: 218a249
2017-04-04 11:24:12 -07:00
Siying Dong
6ef8c620d3 Move auto_roll_logger and filename out of db/
Summary:
It is confusing to have auto_roll_logger to stay under db/, which has nothing to do with database. Move filename together as it is a dependency.
Closes https://github.com/facebook/rocksdb/pull/2080

Differential Revision: D4821141

Pulled By: siying

fbshipit-source-id: ca7d768
2017-04-03 18:39:14 -07:00
Orgad Shaneh
6401a8b76b Fix build with MinGW
Summary:
There still are many warnings (most of them about invalid printf format
for long long), but it builds if FAIL_ON_WARNINGS is disabled.
Closes https://github.com/facebook/rocksdb/pull/2052

Differential Revision: D4807355

Pulled By: siying

fbshipit-source-id: ef03786
2017-03-30 16:54:52 -07:00
Andrew Kryczka
80fe5b3855 disable test: DeleteSchedulerTest.DynamicRateLimiting1
Summary:
temporarily disable since it isn't working on travis.
Closes https://github.com/facebook/rocksdb/pull/2064

Differential Revision: D4807373

Pulled By: ajkr

fbshipit-source-id: f2bb2b0
2017-03-30 16:54:52 -07:00
Sagar Vemuri
c6d04f2ecf Option to fail a request as incomplete when skipping too many internal keys
Summary:
Operations like Seek/Next/Prev sometimes take too long to complete when there are many internal keys to be skipped. Adding an option, max_skippable_internal_keys -- which could be used to set a threshold for the maximum number of keys that can be skipped, will help to address these cases where it is much better to fail a request (as incomplete) than to wait for a considerable time for the request to complete.

This feature -- to fail an iterator seek request as incomplete, is disabled by default when max_skippable_internal_keys = 0. It is enabled only when max_skippable_internal_keys > 0.

This feature is based on the discussion mentioned in the PR https://github.com/facebook/rocksdb/pull/1084.
Closes https://github.com/facebook/rocksdb/pull/2000

Differential Revision: D4753223

Pulled By: sagar0

fbshipit-source-id: 1c973f7
2017-03-30 12:09:21 -07:00
Herman Lee
58179ec4a6 Cleanup of ThreadStatusUtil structures should use the DB's reference
Summary:
instead of thread_local

The cleanup path for the rocksdb database might not have the
thread_updater_local_cache_ pointer initialized because the thread
executing the cleanup is likely not a rocksdb thread. This results in a
memory leak detected by Valgrind. The cleanup code path should use the
thread_status_updater pointer obtained from the DB object instead of a
thread local one.
Closes https://github.com/facebook/rocksdb/pull/2059

Differential Revision: D4801611

Pulled By: hermanlee

fbshipit-source-id: 407d7de
2017-03-30 10:39:13 -07:00
Min Wei
8a8c967460 Enable Fast CRC32 for Win64
Summary:
Currently the fast crc32 path is not enabled on Windows. I am trying to enable it here, hopefully, with the minimum impact to the existing code structure.
Closes https://github.com/facebook/rocksdb/pull/2033

Differential Revision: D4770635

Pulled By: siying

fbshipit-source-id: 676f8b8
2017-03-29 17:39:19 -07:00
Aaron Gao
0fd574926c delete fallocate with punch_hole
Summary:
As discuss in this thread:
https://www.facebook.com/groups/rocksdb.dev/permalink/1218043868294125/

We remove fallocate with FALLOC_FL_PUNCH_HOLE because the recent bug on xfs in kernel 4.x+ that align file size to page size even with FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE.
Closes https://github.com/facebook/rocksdb/pull/2038

Differential Revision: D4779974

Pulled By: siying

fbshipit-source-id: 5f54625
2017-03-28 15:54:12 -07:00
Maysam Yabandeh
e7731d119a Configure index partition size
Summary:
Allow the users to specify the target index partition size.

With this patch an index partition is cut before its estimated in-memory size goes above the configured value for metadata_block_size. The filter partitions are still cut right after an index partition is cut.
Closes https://github.com/facebook/rocksdb/pull/2041

Differential Revision: D4780216

Pulled By: maysamyabandeh

fbshipit-source-id: 95a0831
2017-03-28 12:09:12 -07:00
Shu Zhang
8dee8cad9e Enable fifo compaction benchmark to db_bench
Summary:
Added fifo benchmark to db_bench.
One thing i am not sure is that i am using CompactRange() instead of CompactFiles(). (may cause performance skew because CompactionRange() is not happening in current thread?)  For CompactFiles(), for some reason FIFO compaction doesn't work as expected. More insight is welcomed. I guess FIFO compaction doesn't work with file names? igorcanadi

test cmd:
./db_bench --compaction_style=2 --benchmarks=fillseqdeterministic --disable_auto_compactions --num_levels=1 --fifo_compaction_max_table_files_size_mb=10

---------------------- DB 0 LSM ---------------------
Level[0]: /000014.sst(size: 4211014 bytes)
fillseqdeterministic :       4.731 micros/op 211381 ops/sec;   23.4 MB/s
Closes https://github.com/facebook/rocksdb/pull/1734

Differential Revision: D4774964

Pulled By: siying

fbshipit-source-id: 9d08df6
2017-03-24 17:09:15 -07:00
Raza Hussain
6908e24b56 dynamic setting of stats_dump_period_sec through SetDBOption()
Summary:
Resolved the following issue: https://github.com/facebook/rocksdb/issues/1930
Closes https://github.com/facebook/rocksdb/pull/2004

Differential Revision: D4736764

Pulled By: yiwu-arbug

fbshipit-source-id: 64fe0b7
2017-03-20 22:54:13 -07:00
Aaron Gao
9272e12f19 avoid ftruncate twice in buffered io
Summary:
in buffered io, the filesize_ is the real size.
Closes https://github.com/facebook/rocksdb/pull/1991

Differential Revision: D4711433

Pulled By: lightmark

fbshipit-source-id: ad604b9
2017-03-17 11:39:13 -07:00
Islam AbdelRahman
d52f334cbd Break stalls when no bg work is happening
Summary:
Current stall will keep sleeping even if there is no Flush/Compactions to wait for, I changed the logic to break the stall if we are not flushing or compacting

db_bench command used
```
# fillrandom
# memtable size = 10MB
# value size = 1 MB
# num = 1000
# use /dev/shm
./db_bench --benchmarks="fillrandom,stats" --value_size=1048576 --write_buffer_size=10485760 --num=1000 --delayed_write_rate=XXXXX  --db="/dev/shm/new_stall" | grep "Cumulative stall"
```

```
Current results

# delayed_write_rate = 1000 Kb/sec
Cumulative stall: 00:00:9.031 H:M:S

# delayed_write_rate = 200 Kb/sec
Cumulative stall: 00:00:22.314 H:M:S

# delayed_write_rate = 100 Kb/sec
Cumulative stall: 00:00:42.784 H:M:S

# delayed_write_rate = 50 Kb/sec
Cumulative stall: 00:01:23.785 H:M:S

# delayed_write_rate = 25 Kb/sec
Cumulative stall: 00:02:45.702 H:M:S
```

```
New results

# delayed_write_rate = 1000 Kb/sec
Cumulative stall: 00:00:9.017 H:M:S

# delayed_write_rate = 200 Kb/sec
Cumulative stall: 00
Closes https://github.com/facebook/rocksdb/pull/1884

Differential Revision: D4585439

Pulled By: IslamAbdelRahman

fbshipit-source-id: aed2198
2017-03-16 18:24:17 -07:00
Islam AbdelRahman
995618a821 Support SstFileManager::SetDeleteRateBytesPerSecond()
Summary:
Update DeleteScheduler component to support changing delete rate in runtime by introducing
SstFileManager::SetDeleteRateBytesPerSecond()
Closes https://github.com/facebook/rocksdb/pull/1994

Differential Revision: D4719906

Pulled By: IslamAbdelRahman

fbshipit-source-id: e6b8d9e
2017-03-16 12:09:15 -07:00
Islam AbdelRahman
e19163688b Add macros to include file name and line number during Logging
Summary:
current logging
```
2017/03/14-14:20:30.393432 7fedde9f5700 (Original Log Time 2017/03/14-14:20:30.393414) [default] Level summary: base level 1 max bytes base 268435456 files[1 0 0 0 0 0 0] max score 0.25
2017/03/14-14:20:30.393438 7fedde9f5700 [JOB 2] Try to delete WAL files size 61417909, prev total WAL file size 73820858, number of live WAL files 2.
2017/03/14-14:20:30.393464 7fedde9f5700 [DEBUG] [JOB 2] Delete /dev/shm/old_logging//MANIFEST-000001 type=3 #1 -- OK
2017/03/14-14:20:30.393472 7fedde9f5700 [DEBUG] [JOB 2] Delete /dev/shm/old_logging//000003.log type=0 #3 -- OK
2017/03/14-14:20:31.427103 7fedd49f1700 [default] New memtable created with log file: #9. Immutable memtables: 0.
2017/03/14-14:20:31.427179 7fedde9f5700 [JOB 3] Syncing log #6
2017/03/14-14:20:31.427190 7fedde9f5700 (Original Log Time 2017/03/14-14:20:31.427170) Calling FlushMemTableToOutputFile with column family [default], flush slots available 1, compaction slots allowed 1, compaction slots scheduled 1
2017/03/14-14:20:31.
Closes https://github.com/facebook/rocksdb/pull/1990

Differential Revision: D4708695

Pulled By: IslamAbdelRahman

fbshipit-source-id: cb8968f
2017-03-15 19:39:12 -07:00
Aaron Gao
d525718a93 cleanup direct io flag in WritableFileWriter
Summary:
remove unnecessary field `direct_io_`, use `use_direct_io()` instead.
Closes https://github.com/facebook/rocksdb/pull/1992

Differential Revision: D4712195

Pulled By: lightmark

fbshipit-source-id: 57d34f9
2017-03-14 22:39:09 -07:00
Maysam Yabandeh
11526252cc Pinnableslice (2nd attempt)
Summary:
PinnableSlice

    Summary:
    Currently the point lookup values are copied to a string provided by the
    user. This incures an extra memcpy cost. This patch allows doing point lookup
    via a PinnableSlice which pins the source memory location (instead of
    copying their content) and releases them after the content is consumed
    by the user. The old API of Get(string) is translated to the new API
    underneath.

    Here is the summary for improvements:

    value 100 byte: 1.8% regular, 1.2% merge values
    value 1k byte: 11.5% regular, 7.5% merge values
    value 10k byte: 26% regular, 29.9% merge values
    The improvement for merge could be more if we extend this approach to
    pin the merge output and delay the full merge operation until the user
    actually needs it. We have put that for future work.

    PS:
    Sometimes we observe a small decrease in performance when switching from
    t5452014 to this patch but with the old Get(string) API. The d
Closes https://github.com/facebook/rocksdb/pull/1756

Differential Revision: D4391738

Pulled By: maysamyabandeh

fbshipit-source-id: 6f3edd3
2017-03-13 11:54:10 -07:00
Maysam Yabandeh
e6725e8c8d Fix some bugs in MockEnv
Summary:
Fixing some bugs in MockEnv so it be actually used.
Closes https://github.com/facebook/rocksdb/pull/1914

Differential Revision: D4609923

Pulled By: maysamyabandeh

fbshipit-source-id: ca25735
2017-03-13 09:54:11 -07:00
Min Wei
900c62be61 fix compile for VS2015
Summary:
Without the cast, the build will break on Windows.
Closes https://github.com/facebook/rocksdb/pull/1982

Differential Revision: D4690462

Pulled By: ajkr

fbshipit-source-id: c493b6c
2017-03-10 11:24:09 -08:00
Andrew Kryczka
5b11124e39 add max to histogram stats
Summary:
Domas enlightened me about p100 (i.e., max) stats. Let's add them to our histograms.
Closes https://github.com/facebook/rocksdb/pull/1968

Differential Revision: D4678716

Pulled By: ajkr

fbshipit-source-id: 65e7118
2017-03-08 22:24:15 -08:00
Maysam Yabandeh
54b434110e Builders for partition filter
Summary:
This is the second split of this pull request: https://github.com/facebook/rocksdb/pull/1891 which includes only the builder part. The testing will be included in the third split, where the reader is also included.
Closes https://github.com/facebook/rocksdb/pull/1952

Differential Revision: D4660272

Pulled By: maysamyabandeh

fbshipit-source-id: 36b3cf0
2017-03-07 13:54:12 -08:00
Andrew Kryczka
7c80a6d7d1 Statistic for how often rate limiter is drained
Summary:
This is the metric I plan to use for adaptive rate limiting. The statistics are updated only if the rate limiter is drained by flush or compaction. I believe (but am not certain) that this is the normal case.

The Statistics object is passed in RateLimiter::Request() to avoid requiring changes to client code, which would've been necessary if we passed it in the RateLimiter constructor.
Closes https://github.com/facebook/rocksdb/pull/1946

Differential Revision: D4646489

Pulled By: ajkr

fbshipit-source-id: d8e0161
2017-03-02 17:54:15 -08:00
Islam AbdelRahman
f89b3893c0 Remove skip_table_builder_flush and default it to true
Summary:
This option is needed to be enabled for Direct IO
and I cannot think of a reason where we need to disable it

remove it and default it to true
Closes https://github.com/facebook/rocksdb/pull/1944

Differential Revision: D4641088

Pulled By: IslamAbdelRahman

fbshipit-source-id: d7085b9
2017-03-02 16:54:10 -08:00
Siying Dong
8432bcf555 Make compaction_pri settable through option string
Summary: Closes https://github.com/facebook/rocksdb/pull/1941

Differential Revision: D4637253

Pulled By: siying

fbshipit-source-id: a59dcdb
2017-03-02 10:24:12 -08:00
Aaron Gao
e877afa08b Remove bulk loading and auto_roll_logger in rocksdb_lite
Summary:
shrink lite size
Closes https://github.com/facebook/rocksdb/pull/1929

Differential Revision: D4622059

Pulled By: siying

fbshipit-source-id: 050b796
2017-02-28 11:09:11 -08:00
xiusir
90d8355075 Fix the wrong address for PREFETCH in DynamicBloom::Prefetch
Summary:
- Change data_[b] to data_[b / 8] in DynamicBloom::Prefetch, as b means the b-th bit in data_ and data_[b / 8] is the proper byte in data_.
Closes https://github.com/facebook/rocksdb/pull/1935

Differential Revision: D4628696

Pulled By: siying

fbshipit-source-id: bc5a0c6
2017-02-28 10:39:11 -08:00
Islam AbdelRahman
08864df212 Move advanced column family options to advanced_options.h
Summary:
For the sake of making our options simpler, we should keep options.h as simple as possible and move more advanced/less common options to advaned_options.h

I started with ColumnFamilyOptions and also did some re-ordering

I have moved all ColumnFamilyOptions to advanced_options.h and only left these options in options.h

```
const Comparator* comparator = BytewiseComparator();
std::shared_ptr<MergeOperator> merge_operator = nullptr;
const CompactionFilter* compaction_filter = nullptr;
std::shared_ptr<CompactionFilterFactory> compaction_filter_factory = nullptr;
size_t write_buffer_size = 64 << 20;
CompressionType compression;
int level0_file_num_compaction_trigger = 4;
bool disable_auto_compactions = false;
```
Please feel free to comment on specific options if you think they should be advanced or should not be
Closes https://github.com/facebook/rocksdb/pull/1847

Differential Revision: D4519996

Pulled By: IslamAbdelRahman

fbshipit-source-id: abebd9a
2017-02-27 17:54:14 -08:00
Tamir Duberstein
253799c06d Add missing include for abort()
Summary:
Fixes #1233 (again).
Closes https://github.com/facebook/rocksdb/pull/1931

Differential Revision: D4625289

Pulled By: ajkr

fbshipit-source-id: 70e774e
2017-02-27 17:24:13 -08:00
Siying Dong
8efb5ffa2a [rocksdb][PR] Remove option min_partial_merge_operands and verify_checksums_in_comp…
Summary:
…action

 The two options, min_partial_merge_operands and verify_checksums_in_compaction, are not seldom used. Remove them to reduce the total number of options. Also remove them from Java and C interface.
Closes https://github.com/facebook/rocksdb/pull/1902

Differential Revision: D4601219

Pulled By: siying

fbshipit-source-id: aad4cb2
2017-02-23 15:09:12 -08:00
Siying Dong
1ba2804b7f Remove XFunc tests
Summary:
Xfunc is hardly used. Remove it to keep the code simple.
Closes https://github.com/facebook/rocksdb/pull/1905

Differential Revision: D4603220

Pulled By: siying

fbshipit-source-id: 731f96d
2017-02-23 12:09:11 -08:00
Aaron Gao
1ef5f50e84 detect logical sector size
Summary:
querying logical sector size from the device instead of hardcoding it for linux platform.
Closes https://github.com/facebook/rocksdb/pull/1875

Differential Revision: D4591946

Pulled By: ajkr

fbshipit-source-id: 4e9805c
2017-02-23 11:25:36 -08:00
Aaron Gao
f206af56fc add use_direct_io() to ReadaheadRandomAccessFile
Summary:
Missing this function will cause RandomAccessFileReader not doing alignment in Direct IO mode, which introduce an IOError: invalid argument.
Closes https://github.com/facebook/rocksdb/pull/1900

Differential Revision: D4601261

Pulled By: lightmark

fbshipit-source-id: c3eadf1
2017-02-22 14:54:11 -08:00
Aaron Gao
286a36db7f posix writablefile truncate
Summary:
we occasionally missing this call so the file size will be wrong
Closes https://github.com/facebook/rocksdb/pull/1894

Differential Revision: D4598446

Pulled By: lightmark

fbshipit-source-id: 42b6ef5
2017-02-22 10:09:14 -08:00
Daniel Black
f0879e4c39 Page size isn't always 4k on linux
Summary:
Some places autodetected. These are the two places that didn't.

closes #1498

Still unsure if the following instances of 4 * 1024 need fixing in:
util/io_posix.h
include/rocksdb/table.h (appears to be blocksize and different)
utilities/persistent_cache/block_cache_tier.cc
utilities/persistent_cache/persistent_cache_test.h
include/rocksdb/env.h
util/env_posix.cc
db/column_family.cc
Closes https://github.com/facebook/rocksdb/pull/1499

Differential Revision: D4593640

Pulled By: yiwu-arbug

fbshipit-source-id: efc48de
2017-02-21 16:39:14 -08:00
Yulia Kartseva
ebc8a79980 alignment is on in ReadaheadRandomAccessFile::Read()
Summary: Closes https://github.com/facebook/rocksdb/pull/1857

Differential Revision: D4534518

Pulled By: wat-ze-hex

fbshipit-source-id: b456946
2017-02-18 12:09:12 -08:00
Marcin Dlugajczyk
a618a16f44 New subcode for IOError to detect the ESTALE errno
Summary:
I'd like to propose a patch to expose a new IOError type with subcode kStaleFile to allow to detect when ESTALE error is returned. This allows the rocksdb consumers to handle this error separately from other IOErrors.

I've also added a missing string representation for the kDeadlock subcode, I believe calling ToString() on Status object with that subcode would result in an out of band access in the msgs array,

Please let me know if you have any questions or would like me to make any changes to this pull request.
Closes https://github.com/facebook/rocksdb/pull/1748

Differential Revision: D4387675

Pulled By: IslamAbdelRahman

fbshipit-source-id: 67feb13
2017-02-17 10:54:13 -08:00
Aaron Gao
db2b4eb50e avoid direct io in rocksdb_lite
Summary:
fix lite bugs
disable direct io in lite mode
Closes https://github.com/facebook/rocksdb/pull/1870

Differential Revision: D4559866

Pulled By: yiwu-arbug

fbshipit-source-id: 3761c51
2017-02-16 10:39:13 -08:00
Xiaofei Du
7106a994fe Use monotonic time points in write_controller.cc and rate_limiter.cc
Summary:
NowMicros() provides non-monotonic time. When wall clock is
synchronized or changed, the non-monotonicity time points will affect write rate
controllers. This patch changes write_controller.cc and rate_limiter.cc to use
monotonic time points.
Closes https://github.com/facebook/rocksdb/pull/1865

Differential Revision: D4561732

Pulled By: siying

fbshipit-source-id: 95ece62
2017-02-14 18:24:24 -08:00
Sagar Vemuri
eb912a927e Remove disableDataSync option
Summary:
Remove disableDataSync, and another similarly named disable_data_sync options.
This is being done to simplify options, and also because the performance gains of this feature can be achieved by other methods.
Closes https://github.com/facebook/rocksdb/pull/1859

Differential Revision: D4541292

Pulled By: sagar0

fbshipit-source-id: 5b3a6ca
2017-02-13 11:09:13 -08:00
James Sun
53bb01516d [rocksdb][PR] compaction_style and compaction_pri should output their value as a st…
Summary:
…ring

Replace the numerical output for compaction_style and compaction_pri
with strings
Closes https://github.com/facebook/rocksdb/pull/1817

Differential Revision: D4482796

Pulled By: highker

fbshipit-source-id: 5785768
2017-02-07 10:39:12 -08:00
Maysam Yabandeh
69d5262c81 Two-level Indexes
Summary:
Partition Index blocks and use a Partition-index as a 2nd level index.

The two-level index can be used by setting
BlockBasedTableOptions::kTwoLevelIndexSearch as the index type and
configuring BlockBasedTableOptions::index_per_partition

t15539501
Closes https://github.com/facebook/rocksdb/pull/1814

Differential Revision: D4473535

Pulled By: maysamyabandeh

fbshipit-source-id: bffb87e
2017-02-06 16:39:12 -08:00
Dmitri Smirnov
0a4cdde50a Windows thread
Summary:
introduce new methods into a public threadpool interface,
- allow submission of std::functions as they allow greater flexibility.
- add Joining methods to the implementation to join scheduled and submitted jobs with
  an option to cancel jobs that did not start executing.
- Remove ugly `#ifdefs` between pthread and std implementation, make it uniform.
- introduce pimpl for a drop in replacement of the implementation
- Introduce rocksdb::port::Thread typedef which is a replacement for std::thread.  On Posix Thread defaults as before std::thread.
- Implement WindowsThread that allocates memory in a more controllable manner than windows std::thread with a replaceable implementation.
- should be no functionality changes.
Closes https://github.com/facebook/rocksdb/pull/1823

Differential Revision: D4492902

Pulled By: siying

fbshipit-source-id: c74cb11
2017-02-06 14:54:18 -08:00
Dmitri Smirnov
add8b50cc9 Move ThreadLocal implementation into .cc
Summary: Closes https://github.com/facebook/rocksdb/pull/1829

Differential Revision: D4502314

Pulled By: siying

fbshipit-source-id: f46fac1
2017-02-02 14:09:12 -08:00
Siying Dong
f289d9f4ac Fix OSX build break after the fallocate change
Summary:
The recent update about fallocate failed OSX build. Fix it.
Closes https://github.com/facebook/rocksdb/pull/1830

Differential Revision: D4500235

Pulled By: siying

fbshipit-source-id: a5f2b40
2017-02-02 10:39:11 -08:00
Siying Dong
4a3e7d320c Change the default of delayed slowdown value to 16MB/s
Summary:
Change the default of delayed slowdown value to 16MB/s and further increase the L0 stop condition to 36 files.
Closes https://github.com/facebook/rocksdb/pull/1821

Differential Revision: D4489229

Pulled By: siying

fbshipit-source-id: 1003981
2017-02-01 20:39:17 -08:00
Siying Dong
0513e21f9b RangeSync() should work with ROCKSDB_FALLOCATE_PRESENT not set
Summary: Closes https://github.com/facebook/rocksdb/pull/1824

Differential Revision: D4493862

Pulled By: siying

fbshipit-source-id: c168446
2017-02-01 10:24:20 -08:00
Islam AbdelRahman
8b369ae5bd Cleaner default options using C++11 in-class init
Summary:
C++11 in-class initialization is cleaner and makes it the default more explicit to our users and more visible.
Use it for ColumnFamilyOptions and DBOptions
Closes https://github.com/facebook/rocksdb/pull/1822

Differential Revision: D4490473

Pulled By: IslamAbdelRahman

fbshipit-source-id: c493a87
2017-01-31 18:09:15 -08:00
Islam AbdelRahman
ec79a7b53c Dedup code in option.cc and db_options.cc
Summary:
The code in DBOptions::Dump is simply a duplicate of the code in ImmutableDBOptions::Dump and MutableDBOptions.Dump

consolidate duplicate code.

tested visually
Closes https://github.com/facebook/rocksdb/pull/1818

Differential Revision: D4486710

Pulled By: IslamAbdelRahman

fbshipit-source-id: 7085189
2017-01-31 17:39:12 -08:00
Siying Dong
2d75cd40d3 NewLRUCache() to pick number of shard bits based on capacity if not given
Summary:
If the users use the NewLRUCache() without passing in the number of shard bits, instead of using hard-coded 6, we'll determine it based on capacity.
Closes https://github.com/facebook/rocksdb/pull/1584

Differential Revision: D4242517

Pulled By: siying

fbshipit-source-id: 86b0f18
2017-01-27 06:39:12 -08:00
Andrew Kryczka
94a0c32e73 Fix LRU Ref() for handles with external references only
Summary:
For case !handle->InCache() && handle->refs >= 1 (the third case mentioned in lru_cache.h), the key was overwritten by Insert(). In this case, the refcount can still be incremented, and the cache handle will never enter LRU list. Fix Ref() logic for this case.
Closes https://github.com/facebook/rocksdb/pull/1808

Differential Revision: D4467656

Pulled By: ajkr

fbshipit-source-id: c0784d8
2017-01-26 10:54:15 -08:00