Summary:
Here's my proposal for making our LOGs easier to read by machines.
The idea is to dump all events as JSON objects. JSON is easy to read by humans, but more importantly, it's easy to read by machines. That way, we can parse this, load into SQLite/mongo and then query or visualize.
I started with table_create and table_delete events, but if everybody agrees, I'll continue by adding more events (flush/compaction/etc etc)
Test Plan:
Ran db_bench. Observed:
2015/01/15-14:13:25.788019 1105ef000 EVENT_LOG_v1 {"time_micros": 1421360005788015, "event": "table_file_creation", "file_number": 12, "file_size": 1909699}
2015/01/15-14:13:25.956500 110740000 EVENT_LOG_v1 {"time_micros": 1421360005956498, "event": "table_file_deletion", "file_number": 12}
Reviewers: yhchiang, rven, dhruba, MarkCallaghan, lgalanis, sdong
Reviewed By: sdong
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31647
Summary:
The functions and global symbols in xxhash.h and xxhash.cc were not in any namespace.
This caused issues when rocksdb library was being used along with other uses of libraries
with the same name
Test Plan:
unit tests
Reviewers:
CC:
Task ID: #
Blame Rev:
Summary: Remove unnecessary rocksdb::kInlineSize, since it's not used and there is rocksdb::Arena::kInlineSize.
Test Plan: make all check
Reviewers: igor
Reviewed By: igor
Subscribers: dhruba
Differential Revision: https://reviews.facebook.net/D34905
Summary:
The tests using sync_point for intent to shutdown stop
compaction and this results in stalls if too many rows are written. We
now limit the number of rows written to prevent stalls, since the focus
of the test is to cancel background work, which is being correctly
tested. This fixes a Jenkins issue.
Test Plan: DBTest.PreShutdown*
Reviewers: sdong, igor
Reviewed By: igor
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34893
Summary:
Change the way options.compression_per_level is used when options.level_compaction_dynamic_level_bytes=true so that options.compression_per_level[1] determines compression for the level L0 is merged to, options.compression_per_level[2] to the level after that, etc.
Test Plan: run all tests
Reviewers: rven, yhchiang, kradhakrishnan, igor
Reviewed By: igor
Subscribers: yoshinorim, leveldb, dhruba
Differential Revision: https://reviews.facebook.net/D34431
Summary:
The build process now requires new source files to be added to
src.mk. Adding convenience.cc to src.mk
Test Plan: Build rocksdb
Reviewers: igor, sdong
Reviewed By: sdong
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34815
Summary: Use a better way to map from a key with locality to a random location. Now with the same -read_random_exp_range setting, hit rate drops, which it is expected.
Test Plan: ./db_bench --benchmarks=readrandom -statistics -use_existing_db -cache_size=5000000 --read_random_exp_range=<multiple_values>
Reviewers: MarkCallaghan, kradhakrishnan, igor
Reviewed By: igor
Subscribers: leveldb, dhruba
Differential Revision: https://reviews.facebook.net/D34761
Summary:
Provide an API which enables users to infor Rocksdb that it is
shutting down.
Test Plan: db_test
Reviewers: sdong, igor
Reviewed By: igor
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34617
Summary: Got it working by some voodoo programming
Test Plan: works!
Reviewers: sdong
Reviewed By: sdong
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34611
Summary:
One of the commands in the script make_new_version.sh was
incorrect. Fixed it.
Test Plan: Try the script out to verify that it works.
Reviewers: igor, sdong
Reviewed By: sdong
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34791
Summary: Allow GetThreadList() to report the start time of the current operation.
Test Plan:
./db_bench --benchmarks=fillrandom --num=100000 --threads=40 \
--max_background_compactions=10 --max_background_flushes=3 \
--thread_status_per_interval=1000 --key_size=16 --value_size=1000 \
--num_column_families=10
Sample output:
ThreadID ThreadType cfName Operation OP_StartTime State
140338840797248 High Pri column_family_name_000003 Flush 2015/03/09-17:49:59
140338844991552 High Pri column_family_name_000004 Flush 2015/03/09-17:49:59
140338849185856 Low Pri
140338983403584 Low Pri
140339008569408 Low Pri
140338861768768 Low Pri
140338924683328 Low Pri
140338899517504 Low Pri
140338853380160 Low Pri
140338882740288 Low Pri
140338865963072 High Pri column_family_name_000006 Flush 2015/03/09-17:49:59
140338954043456 Low Pri
140338857574464 Low Pri
Reviewers: igor, rven, sdong
Reviewed By: sdong
Subscribers: lgalanis, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34689
Summary: Introduce parameter -read_random_exp_range in db_bench to provide some key skewness in readrandom and multireadrandom benchmarks. It will helpful to cover block cache better.
Test Plan:
Run benchmarks with this new parameter. I can clearly see block cache hit rate change while I increase this value (DB size is about 66MB):
./db_bench --benchmarks=readrandom -statistics -use_existing_db -cache_size=5000000 --read_random_exp_range=0.0
rocksdb.block.cache.data.miss COUNT : 958418
rocksdb.block.cache.data.hit COUNT : 41582
./db_bench --benchmarks=readrandom -statistics -use_existing_db -cache_size=5000000 --read_random_exp_range=5.0
rocksdb.block.cache.data.miss COUNT : 819518
rocksdb.block.cache.data.hit COUNT : 180482
./db_bench --benchmarks=readrandom -statistics -use_existing_db -cache_size=5000000 --read_random_exp_range=10.0
rocksdb.block.cache.data.miss COUNT : 450479
rocksdb.block.cache.data.hit COUNT : 549521
./db_bench --benchmarks=readrandom -statistics -use_existing_db -cache_size=5000000 --read_random_exp_range=20.0
rocksdb.block.cache.data.miss COUNT : 223192
rocksdb.block.cache.data.hit COUNT : 776808
Reviewers: MarkCallaghan, kradhakrishnan, yhchiang, rven, igor
Reviewed By: igor
Subscribers: leveldb, dhruba
Differential Revision: https://reviews.facebook.net/D34629
Summary: I want to be able to set this through mongo config.
Test Plan: added unit test
Reviewers: sdong
Reviewed By: sdong
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34599
Summary:
Single threaded tests -> sync=0 Multi threaded tests -> sync=1 by default unless DB_BENCH_NO_SYNC is defined.
Also added updaterandom and mergerandom with putOperator. I am waiting for some results from udb on this.
Test Plan:
DB_BENCH_NO_SYNC=1 WAL_DIR=/tmp OUTPUT_DIR=/tmp/b DB_DIR=/tmp ./tools/benchmark.sh debug,bulkload,fillseq,overwrite,filluniquerandom,readrandom,readwhilewriting,updaterandom,mergerandom
WAL_DIR=/tmp OUTPUT_DIR=/tmp/b DB_DIR=/tmp ./tools/benchmark.sh debug,bulkload,fillseq,overwrite,filluniquerandom,readrandom,readwhilewriting,updaterandom,mergerandom
Verify sync settings
Reviewers: sdong, MarkCallaghan, igor, rven
Reviewed By: igor, rven
Subscribers: dhruba
Differential Revision: https://reviews.facebook.net/D34185
Summary:
Add --thread_status_per_interval to db_bench, which allows
db_bench to optionally enable print the current thread status
periodically.
Test Plan:
./db_bench --benchmarks=fillrandom --num=100000 --threads=40 --max_background_compactions=10 --max_background_flushes=3 --thread_status_per_interval=1000 --key_size=16 --value_size=1000 --num_column_families=10
Sample output:
ThreadID ThreadType dbName cfName Operation State
140281571770432 Low Pri
140281575964736 High Pri /tmp/rocksdbtest-5297/dbbench column_family_name_000001 Flush
140281710182464 Low Pri /tmp/rocksdbtest-5297/dbbench column_family_name_000008 Compaction
140281638879296 Low Pri /tmp/rocksdbtest-5297/dbbench column_family_name_000007 Compaction
140281592741952 Low Pri
140281580159040 High Pri /tmp/rocksdbtest-5297/dbbench column_family_name_000002 Flush
140281676628032 Low Pri /tmp/rocksdbtest-5297/dbbench column_family_name_000006 Compaction
140281584353344 Low Pri
140281622102080 Low Pri /tmp/rocksdbtest-5297/dbbench column_family_name_000009 Compaction
140281605324864 Low Pri /tmp/rocksdbtest-5297/dbbench column_family_name_000004 Compaction
140281601130560 High Pri /tmp/rocksdbtest-5297/dbbench default Flush
140281596936256 Low Pri
140281588547648 Low Pri
Reviewers: igor, rven, sdong
Reviewed By: rven
Subscribers: dhruba
Differential Revision: https://reviews.facebook.net/D34515
Summary:
* src.mk (LIB_SOURCES): Add this file:
utilities/document/json_document_builder.cc
to avoid link errors.
Blame Rev: D33849
Test Plan: run "make"
Reviewers: ljin, igor.sugak, rven, sdong, igor
Reviewed By: igor
Subscribers: dhruba
Differential Revision: https://reviews.facebook.net/D34593
Summary:
Any time one would modify a dependent of any *test*.cc file,
"make" would fail to rebuild the affected test binaries,
e.g., db_test. That was due to the fact that we deliberately
excluded those test-related files from the definition of SOURCES
and only $(SOURCES) was used to create the automatically-generated
.d dependency files. The fix is to generate a .d file for every
source file.
* src.mk: New file. Defines LIB_SOURCES, MOCK_SOURCES
and TEST_BENCH_SOURCES.
* Makefile: Include src.mk.
Reflect s/SOURCES/LIB_SOURCES/ renaming.
* build_tools/build_detect_platform: Remove the code
that was used to generate SOURCES= and MOCK_SOURCES=
definitions in make_config.mk. Those lists of files
are now hard-coded in src.mk. Hard-coding this list of
sources is desirable, because without that, one risks
including stray .cc files in a build. Not reproducible.
Test Plan:
Touch a file used by db_test's dependent .o files and ensure that
they are all recompiled. Before, none would be:
$ touch db/db_impl.h && make db_test
CC db/db_test.o
CC db/column_family.o
CC db/db_filesnapshot.o
CC db/db_impl.o
CC db/db_impl_debug.o
CC db/db_impl_readonly.o
CC db/forward_iterator.o
CC db/internal_stats.o
CC db/managed_iterator.o
CC db/repair.o
CC db/write_batch.o
CC utilities/compacted_db/compacted_db_impl.o
CC utilities/ttl/db_ttl_impl.o
CC util/ldb_cmd.o
CC util/ldb_tool.o
CC util/sst_dump_tool.o
CC util/xfunc.o
CCLD db_test
Reviewers: ljin, igor.sugak, igor, rven, sdong
Reviewed By: sdong
Subscribers: yhchiang, adamretter, fyrz, dhruba
Differential Revision: https://reviews.facebook.net/D33849
Summary:
The problem appears to be caused by a bug in Mac OS X compiler
(http://llvm.org/bugs/show_bug.cgi?id=15337). We need explicitly construct the
base object std::ostream(std::streambuf*) with nullptr. Otherwise, ostream will
try to delete the underlying streambuf* which apparently is undefined in the
Mac OS X compiler.
https://github.com/facebook/rocksdb/issues/525
Test Plan:
unit test in fbson
make all check
document_db_test (on mac)
Reviewers: IslamAbdelRahman, igor
Reviewed By: igor
Subscribers: dhruba
Differential Revision: https://reviews.facebook.net/D34587
Summary:
Cleaned up some tests regarding disposal order and tests
which were failing when C++ assertions were enabled.
Test Plan:
- Enable C++ Assertions (remove e.g. -DNDebug in rocksdbjava target)
- make rocksdbjava jtest
Reviewers: adamretter, ankgup87, yhchiang
Subscribers: dhruba
Differential Revision: https://reviews.facebook.net/D34569
In the current implementation DefaultColumnFamily will not disown
the native handle. As the database handles the lease on the native
handle this should be the case.
Summary:
For some reason, libstdc++ implements steady_clock::now() using syscall instead of VDSO optimized clock_gettime() when using glibc 2.16 and earlier. This leads to significant performance degradation for users with older glibcs. See bug reported here: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59177
We observed this behavior when testing mongo on AWS hosts. Facebook hosts are unaffected since we use glibc2.17 and 2.20.
Revert "Fix timing"
This reverts commit 965d9d50b8.
Revert "Use chrono for timing"
This reverts commit 001ce64dc7.
Test Plan: make check
Reviewers: MarkCallaghan, yhchiang, rven, meyering, sdong
Reviewed By: sdong
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34371
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
Summary:
Pre-fetching is a common operation performed by data stores for
disk/flash based systems as part of database startup.
This is part of task 5197184.
Test Plan: Run the newly added unit test
Reviewers: rven, igor, sdong
Reviewed By: sdong
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D33933
Summary: I was pretty sure I compiled this before landing, sorry :/
Test Plan: compiles
Reviewers: sdong
Reviewed By: sdong
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34173
Summary:
This diff fixes a bug introduced by D28521. Read-only backup engine can delete a backup that is later than the latest -- we never check the condition.
I also added a bunch of logging that will help with debugging cases like this in the future.
See more discussion at t6218248.
Test Plan: Added a unit test that was failing before the change. Also, see new LOG file contents: https://phabricator.fb.com/P19738984
Reviewers: benj, sanketh, sumeet, yhchiang, rven, sdong
Reviewed By: sdong
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D33897
Summary: adding stdlib to fbson to fix FreeBSD compilation
Test Plan: 4cfccf14f4
Reviewers: igor
Reviewed By: igor
Subscribers: dhruba
Differential Revision: https://reviews.facebook.net/D34143
Summary: as title, we have unused variables. this is a short-term solution
Test Plan: compiles
Reviewers: IslamAbdelRahman, sdong, rven
Reviewed By: rven
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34125
Summary:
Summary:
Added a new option to ColumnFamllyOptions - optimize_filters_for_hits. This option can be used in the case where most
accesses to the store are key hits and we dont need to optimize performance for key misses.
This is useful when you have a very large database and most of your lookups succeed. The option allows the store to
not store and use filters in the last level (the largest level which contains data). These filters can take a large amount of
space for large databases (in memory and on-disk). For the last level, these filters are only useful for key misses and not
for key hits. If we are not optimizing for key misses, we can choose to not store these filters for that level.
This option is only provided for BlockBasedTable. We skip the filters when we are compacting
Test Plan:
1. Modified db_test toalso run tests with an additonal option (skip_filters_on_last_level)
2. Added another unit test to db_test which specifically tests that filters are being skipped
Reviewers: rven, igor, sdong
Reviewed By: sdong
Subscribers: lgalanis, yoshinorim, MarkCallaghan, rven, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D33717
Summary:
This patch will update the Makefile and source code so that we can build RocksDB successfully on FreeBSD 10 and 11 (64-bit and 32-bit)
I have also encountered some problems when running tests on FreeBSD, I will try to fix them individually in different diffs
Notes:
- FreeBSD uses clang as it's default compiler (http://lists.freebsd.org/pipermail/freebsd-current/2012-September/036480.html)
- GNU C++ compiler have C++ 11 problems on FreeBSD (https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193528)
- make is not gmake on FreeBSD (http://www.khmere.com/freebsd_book/html/ch01.html)
Test Plan:
Using VMWare Fusion Create 4 VM machines (FreeBSD 11 64-bit, FreeBSD 11 32-bit, FreeBSD 10 64-bit, FreeBSD 10 32-bit)
- pkg install git gmake gflags archivers/snappy
- git clone https://github.com/facebook/rocksdb.git
- apply this patch
- setenv CXX c++
- setenv CPATH /usr/local/include/
- setenv LIBRARY_PATH /usr/local/lib/
- gmake db_bench
- make sure compilation is successful and db_bench is running
- gmake all
- make sure compilation is successful
Reviewers: sdong, igor
Reviewed By: igor
Subscribers: dhruba
Differential Revision: https://reviews.facebook.net/D33891
Summary: Current clang path in fbcode points to clang 3.5. This diff updates clang path to clang 3.7.
Test Plan:
Make sure clang 3.7 is in use and all tests are passing.
```lang=bash
% USE_CLANG make check
```
Reviewers: meyering, sdong, rven, igor
Reviewed By: igor
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34119
Summary:
The LoadDependency function does not take a lock when it runs
and it could be modifying data structures while other threads are
accessing it.
Test Plan: Run TSAN.
Reviewers: igor, sdong
Reviewed By: igor, sdong
Subscribers: dhruba
Differential Revision: https://reviews.facebook.net/D34095
