Commit Graph

90 Commits

Author SHA1 Message Date
Yueh-Hsuan Chiang
fa84eb1f7b Fixed a compile error which tries to check whether a size_t < 0 in env_posix.cc
Summary:
Fixed a compile error which tries to check whether a size_t < 0 in env_posix.cc

util/env_posix.cc:180:16: error: comparison of unsigned expression < 0 is always false [-Werror,-Wtautological-compare]
    } while (r < 0 && errno == EINTR);
             ~ ^ ~
1 error generated.

Test Plan: make check all

Reviewers: igor, haobo

Reviewed By: igor

CC: leveldb

Differential Revision: https://reviews.facebook.net/D17379
2014-04-01 11:09:06 -07:00
Igor Canadi
726c8084cd Retry FS system calls on EINTR
Summary: EINTR means 'please retry'. We don't do that currenty. We should.

Test Plan: make check, although it doesn't really test the new code. we'll just have to believe in the code!

Reviewers: haobo, ljin

Reviewed By: haobo

CC: leveldb

Differential Revision: https://reviews.facebook.net/D17349
2014-03-31 14:45:26 -07:00
Igor Canadi
64ae6e9eb9 Don't preallocate log files 2014-03-28 15:04:43 -07:00
Igor Canadi
5c44a8db61 fallocate_with_keep_size is false for LogWrites 2014-03-25 12:53:23 -07:00
Igor Canadi
22507aff6c Fix compile issue in Mac OS
Summary:
Compile issues are:
* Unused variable env_
* Unused fallocate_with_keep_size_

Test Plan: compiles

Reviewers: dhruba, haobo, sdong

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D17043
2014-03-19 15:40:12 -07:00
Igor Canadi
f26cb0f093 Optimize fallocation
Summary:
Based on my recent findings (posted in our internal group), if we use fallocate without KEEP_SIZE flag, we get superior performance of fdatasync() in append-only workloads.

This diff provides an option for user to not use KEEP_SIZE flag, thus optimizing his sync performance by up to 2x-3x.

At one point we also just called posix_fallocate instead of fallocate, which isn't very fast: http://code.woboq.org/userspace/glibc/sysdeps/posix/posix_fallocate.c.html (tl;dr it manually writes out zero bytes to allocate storage). This diff also fixes that, by first calling fallocate and then posix_fallocate if fallocate is not supported.

Test Plan: make check

Reviewers: dhruba, sdong, haobo, ljin

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D16761
2014-03-17 21:52:14 -07:00
sdong
01dcef114b Env to add a function to allow users to query waiting queue length
Summary: Add a function to Env so that users can query the waiting queue length of each thread pool

Test Plan: add a test in env_test

Reviewers: haobo

Reviewed By: haobo

CC: dhruba, igor, yhchiang, ljin, nkg-, leveldb

Differential Revision: https://reviews.facebook.net/D16755
2014-03-11 10:19:02 -07:00
Yumikiyo Osanai
056a0286d2 Modify the compile error about ftruncate()
Summary:
Change to store the return value from ftruncate().
The reason is that ftruncate() has "warn_unused_result" attribute in some environment.

Signed-off-by: Yumikiyo Osanai <yumios.art@gmail.com>
2014-03-08 02:14:34 +09:00
Igor Canadi
26ac5603f4 Truncate unused space on PosixWritableFile::Close()
Summary:
Blocks allocated with fallocate will take extra space on disk even if they are unused and the file is close.

Now we remove the extra blocks at the end of the file by calling `ftruncate`.

Test Plan: added a test to env_test

Reviewers: dhruba

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D16647
2014-03-06 15:59:27 -08:00
Lei Jin
b2795b799e thread local pointer storage
Summary:
This is not a generic thread local implementation in the sense that it
only takes pointer. But it does support multiple instances per thread
and lets user plugin function to perform cleanup when thread exits or an
instance gets destroyed.

Test Plan: unit test for now

Reviewers: haobo, igor, sdong, dhruba

Reviewed By: igor

CC: leveldb, kailiu

Differential Revision: https://reviews.facebook.net/D16131
2014-02-25 17:47:37 -08:00
Igor Canadi
d53b188228 Fix some errors detected by coverity scan
Summary: Nothing major, just an extra return line and posibility of leaking fb in NewRandomRWFile

Test Plan: make check

Reviewers: kailiu, dhruba

Reviewed By: kailiu

CC: leveldb

Differential Revision: https://reviews.facebook.net/D15993
2014-02-06 21:59:44 -08:00
kailiu
84f8185fc0 Merge branch 'master' into performance
Conflicts:
	HISTORY.md
	db/db_impl.cc
	db/memtable.cc
2014-02-05 21:21:00 -08:00
Kai Liu
87bda51d77 Merge pull request #58 from mlin/no-stdout
Eliminate stdout message when launching a posix thread.
2014-02-03 00:38:11 -08:00
kailiu
a5e220f5ef Merge branch 'master' into performance
Conflicts:
	Makefile
	db/db_impl.cc
	db/db_test.cc
	db/memtable_list.cc
	db/memtable_list.h
	table/block_based_table_reader.cc
	table/table_test.cc
	util/cache.cc
	util/coding.cc
2014-01-28 10:35:55 -08:00
Igor Canadi
832158e7f7 Fsync directory after we create a new file
Summary:
@dhruba, I'm not sure where we need to sync the directory. I implemented the function in Env() and added the dir sync just after we close the newly created file in the builder.

Should I also add FsyncDir() to new files that get created by a compaction?

Test Plan: Confirmed that FsyncDir is returning Status::OK()

Reviewers: dhruba, haobo

Reviewed By: dhruba

CC: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D14751
2014-01-27 11:02:21 -08:00
Mike Lin
4c75e21c20 Eliminate stdout message when launching a posix thread.
This seems out of place as it's the only time RocksDB prints to stdout in the
normal course of operations. Thread IDs can still be retrieved from the LOG
file: cut -d ' ' -f2 LOG | sort | uniq | egrep -x '[0-9a-f]+'
2014-01-07 10:44:02 -08:00
kailiu
f1cec73a76 Merge branch 'master' into performance
Conflicts:
	db/db_impl.cc
	db/db_test.cc
	db/memtable.cc
	db/version_set.cc
	include/rocksdb/statistics.h
2013-12-27 12:23:17 -08:00
James Golick
c28dd2a891 oops - missed a spot 2013-12-11 11:18:00 -08:00
James Golick
43c386b72e only try to use fallocate if it's actually present on the system 2013-12-10 22:34:19 -08:00
kailiu
e1d92dfd2e Fix a bunch of mac compilation issues in performance branch 2013-12-04 23:00:33 -08:00
lovro
45a2f2d8d3 Fix build without glibc
Summary: The preprocessor does not follow normal rules of && evaluation, tries to evaluate __GLIBC_PREREQ(2, 12) even though the defined() check fails.  This breaks the build if __GLIBC_PREREQ is absent.

Test Plan: Try adding #undef __GLIBC_PREREQ above the offending line, build no longer breaks

Reviewed By: igor

Blame Rev: 4c81383628
2013-12-01 11:32:54 -08:00
Kai Liu
1966b63137 Merge branch 'master' into perf 2013-11-27 11:47:40 -08:00
lovro
4c81383628 Set background thread name with pthread_setname_np()
Summary: Makes it easier to monitor performance with top

Test Plan: ./manual_compaction_test with `top -H` running.  Previously was two `manual_compacti`, now one shows `rocksdb:bg0`.

Reviewers: igor, dhruba

Reviewed By: igor

CC: leveldb

Differential Revision: https://reviews.facebook.net/D14367
2013-11-27 11:28:06 -08:00
Siying Dong
8aac46d686 [RocksDB Performance Branch] Fix a regression bug of munmap
Summary:
Fix a stupid bug I just introduced in b59d4d5a50, which I didn't even mean to include.
GCC might remove the munmap.

Test Plan: Run it and make sure munmap succeeds

Reviewers: haobo, kailiu

Reviewed By: kailiu

CC: dhruba, reconnect.grayhat, leveldb

Differential Revision: https://reviews.facebook.net/D14361
2013-11-26 14:05:37 -08:00
Siying Dong
b59d4d5a50 A Simple Plain Table
Summary:
A Simple plain table format. No block structure. When creating the table reader, scanning the full table to create indexes.

Test Plan:Add unit test

Reviewers:haobo,dhruba,kailiu

CC:

Task ID: #

Blame Rev:
2013-11-20 18:44:22 -08:00
kailiu
97d8e573a6 make util/env_posix.cc work under mac
Summary: This diff invoves some more complicated issues in the posix environment.

Test Plan: works under mac os. will need to verify dev box.

Reviewers: dhruba

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D14061
2013-11-16 23:44:39 -08:00
Dhruba Borthakur
b4ad5e89ae Implement a compressed block cache.
Summary:
Rocksdb can now support a uncompressed block cache, or a compressed
block cache or both. Lookups first look for a block in the
uncompressed cache, if it is not found only then it is looked up
in the compressed cache. If it is found in the compressed cache,
then it is uncompressed and inserted into the uncompressed cache.

It is possible that the same block resides in the compressed cache
as well as the uncompressed cache at the same time. Both caches
have their own individual LRU policy.

Test Plan: Unit test case attached.

Reviewers: kailiu, sdong, haobo, leveldb

Reviewed By: haobo

CC: xjin, haobo

Differential Revision: https://reviews.facebook.net/D12675
2013-11-01 14:31:35 -07:00
Igor Canadi
b572e81f94 Flush Log every 5 seconds
Summary: This might help with p99 performance, but does not solve the real problem. More discussion on #2947135

Test Plan: make check

Reviewers: dhruba, haobo

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D13809
2013-10-31 15:36:40 -07:00
Mayank Agarwal
9b50106f9a Dbid feature
Summary:
Create a new type of file on startup if it doesn't already exist called DBID.
This will store a unique number generated from boost library's uuid header file.
The use-case is to identify the case of a db losing all its data and coming back up either empty or from an image(backup/live replica's recovery)
the key point to note is that DBID is not stored in a backup or db snapshot
It's preferable to use Boost for uuid because:
1) A non-standard way of generating uuid is not good
2) /proc/sys/kernel/random/uuid generates a uuid but only on linux environments and the solution would not be clean
3) c++ doesn't have any direct way to get a uuid
4) Boost is a very good library that was already having linkage in rocksdb from third-party
Note: I had to update the TOOLCHAIN_REV in build files to get latest verison of boost from third-party as the older version had a bug.
I had to put Wno-uninitialized in Makefile because boost-1.51 has an unitialized variable and rocksdb would not comiple otherwise. Latet open-source for boost is 1.54 but is not there in third-party. I have notified the concerned people in fbcode about it.
@kailiu : While releasing to third-party, an additional dependency will need to be created for boost in TARGETS file. I can help identify.

Test Plan:
Expand db_test to test 2 cases
1) Restarting db with Id file present - verify that no change to Id
2)Restarting db with Id file deleted - verify that a different Id is there after reopen
Also run make all check

Reviewers: dhruba, haobo, kailiu, sdong

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D13587
2013-10-22 12:23:34 -07:00
Dhruba Borthakur
9cd221094c Add appropriate LICENSE and Copyright message.
Summary:
Add appropriate LICENSE and Copyright message.

Test Plan:
make check

Reviewers:

CC:

Task ID: #

Blame Rev:
2013-10-16 17:48:41 -07:00
Igor Canadi
d0beadd456 Env class that can randomly read and write
Summary: I have implemented basic simple use case that I need for External Value Store I'm working on. There is a potential for making this prettier by refactoring/combining WritableFile and RandomAccessFile, avoiding some copypasta. However, I decided to implement just the basic functionality, so I can continue working on the other diff.

Test Plan: Added a unittest

Reviewers: dhruba, haobo, kailiu

Reviewed By: haobo

CC: leveldb

Differential Revision: https://reviews.facebook.net/D13365
2013-10-10 00:03:08 -07:00
Dhruba Borthakur
4463b11cad Migrate names of properties from 'leveldb' prefix to 'rocksdb' prefix.
Summary: Migrate names of properties from 'leveldb' prefix to 'rocksdb' prefix.

Test Plan: make check

Reviewers: emayanke, haobo

Reviewed By: haobo

CC: leveldb

Differential Revision: https://reviews.facebook.net/D13311
2013-10-06 00:14:26 -07:00
Dhruba Borthakur
a143ef9b38 Change namespace from leveldb to rocksdb
Summary:
Change namespace from leveldb to rocksdb. This allows a single
application to link in open-source leveldb code as well as
rocksdb code into the same process.

Test Plan: compile rocksdb

Reviewers: emayanke

Reviewed By: emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D13287
2013-10-04 11:59:26 -07:00
Dhruba Borthakur
87d6eb2f6b Implement apis in the Environment to clear out pages in the OS cache.
Summary:
Added a new api to the Environment that allows clearing out not-needed
pages from the OS cache. This will be helpful when the compressed
block cache replaces the OS cache.

Test Plan: EnvPosixTest.InvalidateCache

Reviewers: haobo

Reviewed By: haobo

CC: leveldb

Differential Revision: https://reviews.facebook.net/D13041
2013-09-23 22:05:03 -07:00
Rajat Goel
11c65021fb Revert "Minor fixes found while trying to compile it using clang on Mac OS X"
This reverts commit 5f2c136c32.
2013-09-15 23:01:26 -07:00
Rajat Goel
5f2c136c32 Minor fixes found while trying to compile it using clang on Mac OS X 2013-09-15 22:06:14 -07:00
Haobo Xu
1565dab809 [RocksDB] Enhance Env to support two thread pools LOW and HIGH
Summary:
this is the ground work for separating memtable flush jobs to their own thread pool.
Both SetBackgroundThreads and Schedule take a third parameter Priority to indicate which thread pool they are working on. The names LOW and HIGH are just identifiers for two different thread pools, and does not indicate real difference in 'priority'. We can set number of threads in the pools independently.
The thread pool implementation is refactored.

Test Plan: make check

Reviewers: dhruba, emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D12885
2013-09-12 16:15:36 -07:00
Haobo Xu
f2f4c8072f [RocksDB] Added nano second stopwatch and new perf counters to track block read cost
Summary: The pupose of this diff is to expose per user-call level precise timing of block read, so that we can answer questions like: a Get() costs me 100ms, is that somehow related to loading blocks from file system, or sth else? We will answer that with EXACTLY how many blocks have been read, how much time was spent on transfering the bytes from os, how much time was spent on checksum verification and how much time was spent on block decompression, just for that one Get. A nano second stopwatch was introduced to track time with higher precision. The cost/precision of the stopwatch is also measured in unit-test. On my dev box, retrieving one time instance costs about 30ns, on average. The deviation of timing results is good enough to track 100ns-1us level events. And the overhead could be safely ignored for 100us level events (10000 instances/s), for example, a viewstate thrift call.

Test Plan: perf_context_test, also testing with viewstate shadow traffic.

Reviewers: dhruba

Reviewed By: dhruba

CC: leveldb, xjin

Differential Revision: https://reviews.facebook.net/D12351
2013-09-07 21:14:54 -07:00
Dhruba Borthakur
1186192ed1 Replace include/leveldb with include/rocksdb.
Summary: Replace include/leveldb with include/rocksdb.

Test Plan:
make clean; make check
make clean; make release

Differential Revision: https://reviews.facebook.net/D12489
2013-08-23 10:51:00 -07:00
Haobo Xu
96be2c4ee0 [RocksDB] Add mmap_read option for db_stress
Summary: as title, also removed an incorrect assertion

Test Plan: make check; db_stress --mmap_read=1; db_stress --mmap_read=0

Reviewers: dhruba, emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D11367
2013-06-19 10:28:32 -07:00
Haobo Xu
3cc1af2062 [RocksDB] Option for incremental sync
Summary: This diff added an option to control the incremenal sync frequency. db_bench has a new flag bytes_per_sync for easy tuning exercise.

Test Plan: make check; db_bench

Reviewers: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D11295
2013-06-18 15:00:32 -07:00
Haobo Xu
778e179046 [RocksDB] Sync file to disk incrementally
Summary:
During compaction, we sync the output files after they are fully written out. This causes unnecessary blocking of the compaction thread and burstiness of the write traffic.
This diff simply asks the OS to sync data incrementally as they are written, on the background. The hope is that, at the final sync, most of the data are already on disk and we would block less on the sync call. Thus, each compaction runs faster and we could use fewer number of compaction threads to saturate IO.
In addition, the write traffic will be smoothed out, hopefully reducing the IO P99 latency too.

Some quick tests show 10~20% improvement in per thread compaction throughput. Combined with posix advice on compaction read, just 5 threads are enough to almost saturate the udb flash bandwidth for 800 bytes write only benchmark.
What's more promising is that, with saturated IO, iostat shows average wait time is actually smoother and much smaller.
For the write only test 800bytes test:
Before the change:  await  occillate between 10ms and 3ms
After the change: await ranges 1-3ms

Will test against read-modify-write workload too, see if high read latency P99 could be resolved.

Will introduce a parameter to control the sync interval in a follow up diff after cleaning up EnvOptions.

Test Plan: make check; db_bench; db_stress

Reviewers: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D11115
2013-06-12 12:53:59 -07:00
Haobo Xu
bdf1085944 [RocksDB] cleanup EnvOptions
Summary:
This diff simplifies EnvOptions by treating it as POD, similar to Options.
- virtual functions are removed and member fields are accessed directly.
- StorageOptions is removed.
- Options.allow_readahead and Options.allow_readahead_compactions are deprecated.
- Unused global variables are removed: useOsBuffer, useFsReadAhead, useMmapRead, useMmapWrite

Test Plan: make check; db_stress

Reviewers: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D11175
2013-06-12 11:17:19 -07:00
Haobo Xu
ab8d2f6ab2 [RocksDB] [Performance] Allow different posix advice to be applied to the same table file
Summary:
Current posix advice implementation ties up the access pattern hint with the creation of a file.
It is not possible to apply different advice for different access (random get vs compaction read),
without keeping two open files for the same table. This patch extended the RandomeAccessFile interface
to accept new access hint at anytime. Particularly, we are able to set different access hint on the same
table file based on when/how the file is used.
Two options are added to set the access hint, after the file is first opened and after the file is being
compacted.

Test Plan: make check; db_stress; db_bench

Reviewers: dhruba

Reviewed By: dhruba

CC: MarkCallaghan, leveldb

Differential Revision: https://reviews.facebook.net/D10905
2013-05-30 19:08:44 -07:00
Vamsi Ponnekanti
760dd4750f [Kill randomly at various points in source code for testing]
Summary:
This is initial version. A few ways in which this could
be extended in the future are:
(a) Killing from more places in source code
(b) Hashing stack and using that hash in determining whether to crash.
    This is to avoid crashing more often at source lines that are executed
    more often.
(c) Raising exceptions or returning errors instead of killing

Test Plan:
This whole thing is for testing.

Here is part of output:

python2.7 tools/db_crashtest2.py -d 600
Running db_stress

db_stress retncode -15 output LevelDB version     : 1.5
Number of threads   : 32
Ops per thread      : 10000000
Read percentage     : 50
Write-buffer-size   : 4194304
Delete percentage   : 30
Max key             : 1000
Ratio #ops/#keys    : 320000
Num times DB reopens: 0
Batches/snapshots   : 1
Purge redundant %   : 50
Num keys per lock   : 4
Compression         : snappy
------------------------------------------------
No lock creation because test_batches_snapshots set
2013/04/26-17:55:17  Starting database operations
Created bg thread 0x7fc1f07ff700
... finished 60000 ops
Running db_stress

db_stress retncode -15 output LevelDB version     : 1.5
Number of threads   : 32
Ops per thread      : 10000000
Read percentage     : 50
Write-buffer-size   : 4194304
Delete percentage   : 30
Max key             : 1000
Ratio #ops/#keys    : 320000
Num times DB reopens: 0
Batches/snapshots   : 1
Purge redundant %   : 50
Num keys per lock   : 4
Compression         : snappy
------------------------------------------------
Created bg thread 0x7ff0137ff700
No lock creation because test_batches_snapshots set
2013/04/26-17:56:15  Starting database operations
... finished 90000 ops

Revert Plan: OK

Task ID: #2252691

Reviewers: dhruba, emayanke

Reviewed By: emayanke

CC: leveldb, haobo

Differential Revision: https://reviews.facebook.net/D10581
2013-05-21 18:21:49 -07:00
Kai Liu
958b9c80e1 Avoid global static initialization in Env::Default()
Summary:
Mark's task description from #2316777

Env::Default() comes from util/env_posix.cc

This is a static global.

static PosixEnv default_env;

Env* Env::Default() {
  return &default_env;
}

-----

These globals assume default_env was initialized first. I don't think that is safe or correct to do (http://stackoverflow.com/questions/1005685/c-static-initialization-order)

const string AutoRollLoggerTest::kTestDir(
test::TmpDir() + "/db_log_test");
const string AutoRollLoggerTest::kLogFile(
test::TmpDir() + "/db_log_test/LOG");
Env* AutoRollLoggerTest::env = Env::Default();

Test Plan:
run make clean && make && make check
But how can I know if it works in Ubuntu?

Reviewers: MarkCallaghan, chip

Reviewed By: chip

CC: leveldb, dhruba, haobo

Differential Revision: https://reviews.facebook.net/D10491
2013-04-22 18:10:28 -07:00
Dhruba Borthakur
3cb7bf8170 Initialize parameters in the constructor.
Summary:
RocksDB doesn't build on Ubuntu VM .. shoudl be fixed with this patch.

g++ --version
g++ (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3

util/env_posix.cc:68:24: sorry, unimplemented: non-static data member initializers
util/env_posix.cc:68:24: error: ISO C++ forbids in-class initialization of non-const static member ‘use_os_buffer’
util/env_posix.cc:113:24: sorry, unimplemented: non-static data member initializers
util/env_posix.cc:113:24: error: ISO C++ forbids in-class initialization of non-const static member ‘use_os_buffer

Test Plan: make check

Reviewers: sheki, leveldb

Reviewed By: sheki

Differential Revision: https://reviews.facebook.net/D10461
2013-04-22 14:41:45 -07:00
Mayank Agarwal
6594fef7ef Exit and Join the background compaction threads while running rocksdb tests
Summary:
The background compaction threads are never exitted and therefore caused
memory-leaks while running rpcksdb tests. Have changed the PosixEnv destructor to exit and join them and changed the tests likewise
The memory leaked has reduced from 320 bytes to 64 bytes in all the tests. The 64
bytes is relating to
pthread_exit, but still have to figure out why. The stack-trace right now with
table_test.cc = 64 bytes in 1 blocks are possibly lost in loss record 4 of 5
   at 0x475D8C: malloc (jemalloc.c:914)
   by 0x400D69E: _dl_map_object_deps (dl-deps.c:505)
   by 0x4013393: dl_open_worker (dl-open.c:263)
   by 0x400F015: _dl_catch_error (dl-error.c:178)
   by 0x4013B2B: _dl_open (dl-open.c:569)
   by 0x5D3E913: do_dlopen (dl-libc.c:86)
   by 0x400F015: _dl_catch_error (dl-error.c:178)
   by 0x5D3E9D6: __libc_dlopen_mode (dl-libc.c:47)
   by 0x5048BF3: pthread_cancel_init (unwind-forcedunwind.c:53)
   by 0x5048DC9: _Unwind_ForcedUnwind (unwind-forcedunwind.c:126)
   by 0x5046D9F: __pthread_unwind (unwind.c:130)
   by 0x50413A4: pthread_exit (pthreadP.h:289)

Test Plan: make all check

Reviewers: dhruba, sheki, haobo

Reviewed By: dhruba

CC: leveldb, chip

Differential Revision: https://reviews.facebook.net/D9573
2013-04-10 14:50:25 -07:00
heyongqiang
e21ba94a69 Set FD_CLOEXEC after each file open
Summary: as subject. This is causing problem in adsconv. Ideally, this flags should be set in open. But that is only supported in Linux kernel ≥2.6.23 and glibc ≥2.7.

Test Plan:
db_test

run db_test

Reviewers: dhruba, MarkCallaghan, haobo

Reviewed By: dhruba

CC: leveldb, chip

Differential Revision: https://reviews.facebook.net/D10089
2013-04-10 14:44:06 -07:00
Mayank Agarwal
adb4e4509b Fixing delete in env_posix.cc
Summary: Was deleting incorrectly. Should delete the whole array.

Test Plan: make;valgrind stops complaining about Mismatched free/delete

Reviewers: dhruba, sheki

Reviewed By: sheki

CC: leveldb, haobo

Differential Revision: https://reviews.facebook.net/D10059
2013-04-09 11:49:35 -07:00