Commit Graph

41 Commits

Author SHA1 Message Date
Yi Wu
d76ddf327d Disable ClockCache db_crashtest
Summary: Tempororily disable clock cache in db_crashtest while we investigate data race issue with clock cache.

Test Plan:
    python ./tools/db_crashtest.py blackbox

Reviewers: sdong, lightmark, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: andrewkr, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D62481
2016-08-24 14:19:05 -07:00
Yi Wu
4cc37f59e5 Introduce ClockCache
Summary:
Clock-based cache implemenetation aim to have better concurreny than
default LRU cache. See inline comments for implementation details.

Test Plan:
Update cache_test to run on both LRUCache and ClockCache. Adding some
new tests to catch some of the bugs that I fixed while implementing the
cache.

Reviewers: kradhakrishnan, sdong

Reviewed By: sdong

Subscribers: andrewkr, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D61647
2016-08-19 12:28:19 -07:00
sdong
f85df120f2 Re-enable tsan crash white-box test with reduced killing odds
Summary:
Tsan crash white-box test was disabled because it never ends. Re-enable it with reduced killing odds.
Add a parameter in crash test script to allow we pass it through an environment variable.

Test Plan: Run it manually.

Reviewers: IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: leveldb, andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D61053
2016-07-22 12:51:27 -07:00
Islam AbdelRahman
68a8e6b8fa Introduce FullMergeV2 (eliminate memcpy from merge operators)
Summary:
This diff update the code to pin the merge operator operands while the merge operation is done, so that we can eliminate the memcpy cost, to do that we need a new public API for FullMerge that replace the std::deque<std::string> with std::vector<Slice>

This diff is stacked on top of D56493 and D56511

In this diff we
- Update FullMergeV2 arguments to be encapsulated in MergeOperationInput and MergeOperationOutput which will make it easier to add new arguments in the future
- Replace std::deque<std::string> with std::vector<Slice> to pass operands
- Replace MergeContext std::deque with std::vector (based on a simple benchmark I ran https://gist.github.com/IslamAbdelRahman/78fc86c9ab9f52b1df791e58943fb187)
- Allow FullMergeV2 output to be an existing operand

```
[Everything in Memtable | 10K operands | 10 KB each | 1 operand per key]

DEBUG_LEVEL=0 make db_bench -j64 && ./db_bench --benchmarks="mergerandom,readseq,readseq,readseq,readseq,readseq" --merge_operator="max" --merge_keys=10000 --num=10000 --disable_auto_compactions --value_size=10240 --write_buffer_size=1000000000

[FullMergeV2]
readseq      :       0.607 micros/op 1648235 ops/sec; 16121.2 MB/s
readseq      :       0.478 micros/op 2091546 ops/sec; 20457.2 MB/s
readseq      :       0.252 micros/op 3972081 ops/sec; 38850.5 MB/s
readseq      :       0.237 micros/op 4218328 ops/sec; 41259.0 MB/s
readseq      :       0.247 micros/op 4043927 ops/sec; 39553.2 MB/s

[master]
readseq      :       3.935 micros/op 254140 ops/sec; 2485.7 MB/s
readseq      :       3.722 micros/op 268657 ops/sec; 2627.7 MB/s
readseq      :       3.149 micros/op 317605 ops/sec; 3106.5 MB/s
readseq      :       3.125 micros/op 320024 ops/sec; 3130.1 MB/s
readseq      :       4.075 micros/op 245374 ops/sec; 2400.0 MB/s
```

```
[Everything in Memtable | 10K operands | 10 KB each | 10 operand per key]

DEBUG_LEVEL=0 make db_bench -j64 && ./db_bench --benchmarks="mergerandom,readseq,readseq,readseq,readseq,readseq" --merge_operator="max" --merge_keys=1000 --num=10000 --disable_auto_compactions --value_size=10240 --write_buffer_size=1000000000

[FullMergeV2]
readseq      :       3.472 micros/op 288018 ops/sec; 2817.1 MB/s
readseq      :       2.304 micros/op 434027 ops/sec; 4245.2 MB/s
readseq      :       1.163 micros/op 859845 ops/sec; 8410.0 MB/s
readseq      :       1.192 micros/op 838926 ops/sec; 8205.4 MB/s
readseq      :       1.250 micros/op 800000 ops/sec; 7824.7 MB/s

[master]
readseq      :      24.025 micros/op 41623 ops/sec;  407.1 MB/s
readseq      :      18.489 micros/op 54086 ops/sec;  529.0 MB/s
readseq      :      18.693 micros/op 53495 ops/sec;  523.2 MB/s
readseq      :      23.621 micros/op 42335 ops/sec;  414.1 MB/s
readseq      :      18.775 micros/op 53262 ops/sec;  521.0 MB/s

```

```
[Everything in Block cache | 10K operands | 10 KB each | 1 operand per key]

[FullMergeV2]
$ DEBUG_LEVEL=0 make db_bench -j64 && ./db_bench --benchmarks="readseq,readseq,readseq,readseq,readseq" --merge_operator="max" --num=100000 --db="/dev/shm/merge-random-10K-10KB" --cache_size=1000000000 --use_existing_db --disable_auto_compactions
readseq      :      14.741 micros/op 67837 ops/sec;  663.5 MB/s
readseq      :       1.029 micros/op 971446 ops/sec; 9501.6 MB/s
readseq      :       0.974 micros/op 1026229 ops/sec; 10037.4 MB/s
readseq      :       0.965 micros/op 1036080 ops/sec; 10133.8 MB/s
readseq      :       0.943 micros/op 1060657 ops/sec; 10374.2 MB/s

[master]
readseq      :      16.735 micros/op 59755 ops/sec;  584.5 MB/s
readseq      :       3.029 micros/op 330151 ops/sec; 3229.2 MB/s
readseq      :       3.136 micros/op 318883 ops/sec; 3119.0 MB/s
readseq      :       3.065 micros/op 326245 ops/sec; 3191.0 MB/s
readseq      :       3.014 micros/op 331813 ops/sec; 3245.4 MB/s
```

```
[Everything in Block cache | 10K operands | 10 KB each | 10 operand per key]

DEBUG_LEVEL=0 make db_bench -j64 && ./db_bench --benchmarks="readseq,readseq,readseq,readseq,readseq" --merge_operator="max" --num=100000 --db="/dev/shm/merge-random-10-operands-10K-10KB" --cache_size=1000000000 --use_existing_db --disable_auto_compactions

[FullMergeV2]
readseq      :      24.325 micros/op 41109 ops/sec;  402.1 MB/s
readseq      :       1.470 micros/op 680272 ops/sec; 6653.7 MB/s
readseq      :       1.231 micros/op 812347 ops/sec; 7945.5 MB/s
readseq      :       1.091 micros/op 916590 ops/sec; 8965.1 MB/s
readseq      :       1.109 micros/op 901713 ops/sec; 8819.6 MB/s

[master]
readseq      :      27.257 micros/op 36687 ops/sec;  358.8 MB/s
readseq      :       4.443 micros/op 225073 ops/sec; 2201.4 MB/s
readseq      :       5.830 micros/op 171526 ops/sec; 1677.7 MB/s
readseq      :       4.173 micros/op 239635 ops/sec; 2343.8 MB/s
readseq      :       4.150 micros/op 240963 ops/sec; 2356.8 MB/s
```

Test Plan: COMPILE_WITH_ASAN=1 make check -j64

Reviewers: yhchiang, andrewkr, sdong

Reviewed By: sdong

Subscribers: lovro, andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D57075
2016-07-20 09:49:03 -07:00
Islam AbdelRahman
d6b79e2fd0 Remove filter_deletes from crash_test
Summary: filter_deletes option was removed, remove it from crash_test to fix it

Test Plan: make crash_test

Reviewers: yhchiang, andrewkr, sdong

Reviewed By: sdong

Subscribers: andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D59901
2016-06-21 17:30:21 -07:00
Yueh-Hsuan Chiang
a2466c8851 [db_stress] Make subcompaction random in crash_test
Summary: Make subcompaction random in crash_test

Test Plan: make crash_test and verify whether subcompaction changes randomly

Reviewers: IslamAbdelRahman, kradhakrishnan, yiwu, sdong, andrewkr

Reviewed By: andrewkr

Subscribers: andrewkr, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D56571
2016-04-18 14:43:33 -07:00
sdong
2608219cc9 crash_test: cover concurrent memtable insert in default crash test
Summary: Default crash test uses prefix hash memtable, which is not compatible to concurrent memtable. Allow prefix test run with skip list and use skip list memtable when concurrent insert is used.

Test Plan: Run "python -u tools/db_crashtest.py whitebox" and watch sometimes skip list is used.

Reviewers: anthony, yhchiang, kradhakrishnan, andrewkr, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D53907
2016-02-09 08:02:38 -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
sdong
34a40bf911 Add --allow_concurrent_memtable_write in stress test and run it in crash_test
Summary: Add an option of --allow_concurrent_memtable_write in stress test and cover it in crash test

Test Plan: Run crash test and make sure three combinations of the two options show up randomly.

Reviewers: IslamAbdelRahman, yhchiang, andrewkr, anthony, kradhakrishnan

Reviewed By: kradhakrishnan

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D53811
2016-02-04 16:15:18 -08:00
sdong
fdbff42391 Crash test to make kill decision for every kill point
Summary:
In crash test, when coming to each kill point, we start a random class using seed as current second. With this approach, for every second, the random number used is the same. However, in each second, there are multiple kill points with different frequency. It makes it hard to reason about chance of kill point to trigger. With this commit, we use thread local random seed to generate the random number, so that it will take different values per second, hoping it makes chances of killing much easier to reason about.

Also significantly reduce the kill odd to make sure time before kiling is similar as before.

Test Plan: Run white box crash test and see the killing happens as expected and the run time time before killing reasonable.

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

Reviewed By: anthony

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D52971
2016-01-19 18:11:24 -08:00
sdong
ab0f3b964f crash_test to trigger some less frequent crash point more frequently
Summary: crash_test still has a very low chance to hit some crash point. Have another mode for covering them more likely.

Test Plan: Run crash_test and see db_stress is called with expected prameters.

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

Reviewed By: yhchiang

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D49473
2015-10-27 12:06:06 -07:00
Shusen Liu
d0d13ebf67 fix bug in db_crashtest.py
Summary:
in tools/db_crashtest.py, cmd_params['db'] by default is a lambda expression, not the actual db_name.
fix by get the db_name before passing it to gen_cmd.

Test Plan: run `make crashtest`

Reviewers: sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D49119
2015-10-20 22:01:11 -07:00
Shusen Liu
033c6f1add T7916298, bug fix
Summary: dbname => cmd_params['db']

Test Plan: Run `make crash_test`

Reviewers: sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D49077
2015-10-19 21:09:35 -07:00
Shusen Liu
4575de5b9e #7916298: merge tools/db_crashtest2.py into tools/db_crashtest.py
Summary:
merge tools/db_crashtest2.py into tools/db_crashtest.py

python tools/db_crashtest.py -h  # show help message, ALL parameters can be overwrite by arguments

Example usages:
python tools/db_crashtest.py blackbox  # run blackbox with default parameters
python tools/db_crashtest.py blackbox --simple
python tools/db_crashtest.py whitebox  # run whitebox with default parameters
python tools/db_crashtest.py whitebox --simple

all default parameters are identical to previous version.

Test Plan: `make crash_test` and make sure it can run with expected parameters pased to db_stress.

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

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D48567
2015-10-19 13:24:55 -07:00
sdong
680156ca61 crash_test to run with data sync on
Summary: Mode of data sync off is a much less used than the case of data sync on. Crash test should cover the more common case than a corner case. So turn data sync on in crash tests.

Test Plan: Run crash test and make sure it can run with expected parameters pased to db_stres.

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

Reviewed By: yhchiang

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D48729
2015-10-15 14:37:08 -07:00
sdong
cf3e05304f crash_test cleans up directory before testing if TEST_TMPDIR is set
Summary: In a recent change, crash_test can put data under TEST_TMPDIR. However, the directory is not cleaned before running the test, which may cause unexpected results. Clean it.

Test Plan: Run white and black box crash test against non-existing, or non-empty but not compactible DBs, and make sure it works as expected.

Reviewers: kradhakrishnan, rven, yhchiang, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D43515
2015-08-04 14:59:28 -07:00
sdong
2e73bd4ff2 crash_test to put DB under TEST_TMPDIR
Summary: Currently crash_test only puts data under /tmp. It is less flexible if we want to cover different file systems or media. Make crash_test to appreciate TEST_TMPDIR so that users can run it against another file system.

Test Plan: Run blackbox_crash_test and whitebox_crash_test with or without TEST_TMPDIR set and make sure DBs are put in the right place

Reviewers: kradhakrishnan, yhchiang, rven, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D43509
2015-08-04 12:10:55 -07:00
sdong
1205bdbcee crash_test to cover simply cases
Summary:
crash_test now only runs complicated options, multiple column families, prefix hash, frequently changing options, many compaction threads, etc. These options are good to cover new features but we loss coverage in most common use cases. Furthermore, by running only for multiple column families, we are not able to create LSM trees that are large enough to cover some stress cases.
Make half of crash_test runs the simply tests: single column family, default mem table, one compaction thread, no change options.

Test Plan: Run crash_test

Reviewers: rven, yhchiang, IslamAbdelRahman, kradhakrishnan

Reviewed By: kradhakrishnan

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D43461
2015-08-04 12:08:38 -07:00
Lei Jin
714c63c584 db_stress for dynamic options
Summary: Allow SetOptions() during db_stress test

Test Plan: make crash_test

Reviewers: sdong, yhchiang, rven, igor

Reviewed By: igor

Subscribers: leveldb

Differential Revision: https://reviews.facebook.net/D25497
2014-10-27 12:11:16 -07:00
Igor Canadi
d4a8423334 Remove seek compaction
Summary:
As discussed in our internal group, we don't get much use of seek compaction at the moment, while it's making code more complicated and slower in some cases.

This diff removes seek compaction and (hopefully) all code that was introduced to support seek compaction.

There is one test case that relied on didIO information. I'll try to find another way to implement it.

Test Plan: make check

Reviewers: sdong, haobo, yhchiang, ljin, dhruba

Reviewed By: ljin

Subscribers: leveldb

Differential Revision: https://reviews.facebook.net/D19161
2014-06-20 10:23:02 +02:00
Igor Canadi
ac328a86b9 Merge branch 'master' into columnfamilies
Conflicts:
	db/db_impl.cc
	db/db_test.cc
2014-03-20 14:41:37 -07:00
Igor Canadi
4cfb0eb40f Delete rocksdb dir after crashtest
Summary:
We should clean up after ourselves. Last crashtest failed because the disk on the cibuild machine was full.

Also, db_crashtest is supposed to run the test on the same database in every iteration. This isn't the case currently, because every run creates a new tmp directory. It's fixed with this diff.

Test Plan: ran it

Reviewers: ljin

Reviewed By: ljin

CC: leveldb

Differential Revision: https://reviews.facebook.net/D17073
2014-03-20 11:11:08 -07:00
Igor Canadi
159928dfa5 Added flag progress_reports in db_stress 2014-03-19 09:58:41 -07:00
Igor Canadi
04a1035efe Revert "DB stress with normal skip list"
This reverts commit 86926d8c6a.
2014-03-12 22:21:13 -07:00
Igor Canadi
86926d8c6a DB stress with normal skip list
Summary:
Hash skip list has issues, causing db_stress to fail badly.

For now, switching back to skip_list by default before we figure out root cause.

Test Plan: db_stress is happy(ier)

Reviewers: ljin

Reviewed By: ljin

CC: leveldb

Differential Revision: https://reviews.facebook.net/D16845
2014-03-12 17:35:27 -07:00
Igor Canadi
7b7793e97a Don't sync in stress test
Summary: Syncing in stress test makes it run much much much slower. It also doesn't add much value IMO.

Test Plan: no

Reviewers: ljin

Reviewed By: ljin

CC: leveldb

Differential Revision: https://reviews.facebook.net/D16839
2014-03-12 15:12:09 -07:00
Igor Canadi
5ba028c179 DBStress cleanup
Summary:
*) fixed the comment
*) constant 1 was not casted to 64-bit, which (I think) might cause overflow if we shift it too much
*) default prefix size to be 7, like it was before

Test Plan: compiled

Reviewers: ljin

Reviewed By: ljin

CC: leveldb

Differential Revision: https://reviews.facebook.net/D16827
2014-03-12 09:31:06 -07:00
Lei Jin
02dab3be11 fix db_stress test
Summary: Fix the db_stress test, let is run with HashSkipList for real

Test Plan:
python tools/db_crashtest.py
python tools/db_crashtest2.py

Reviewers: igor, haobo

Reviewed By: igor

CC: leveldb

Differential Revision: https://reviews.facebook.net/D16773
2014-03-11 13:44:33 -07:00
Igor Canadi
97eddef235 Reopen DB in crash test
Summary:
Why don't we automatically reopen DB when running crash test (running in our nightly build)? If I understand correctly, crashtest is manually reopenning the DB, but then the DB does not check its consistency when you kill db_stress process and then re-run it again.
Does this make sense?

Test Plan: not reall

Reviewers: dhruba, haobo, emayanke

Reviewed By: emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D16167
2014-03-03 17:10:30 -08:00
Natalie Hildebrandt
9262061b0d Fixing crashing tests to include iterpercent param
Summary: Adding in the iterpercent flag to tests.

Test Plan: make crash_test

Reviewers: emayanke

Reviewed By: emayanke

Differential Revision: https://reviews.facebook.net/D13035
2013-09-20 16:27:22 -07:00
Xing Jin
af732c7ba8 Add universal compaction to db_stress nightly build
Summary:
Most code change in this diff is code cleanup/rewrite. The logic changes include:

(1) add universal compaction to db_crashtest2.py
(2) randomly set --test_batches_snapshots to be 0 or 1 in db_crashtest2.py. Old codes always use 1.
(3) use different tmp directory as db directory in different runs. I saw some intermittent errors in my local tests. Use of different tmp directory seems to be able to solve the issue.

Test Plan: Have run "make crashtest" for multiple times. Also run "make all check"

Reviewers: emayanke, dhruba, haobo

Reviewed By: emayanke

Differential Revision: https://reviews.facebook.net/D12369
2013-08-20 17:37:49 -07:00
Tyler Harter
85d83a150b Update crashtests to match D12267
Summary: I changed the db_stress configs, but forgot to update the scripts using the old configs.

Test Plan: 'make blackbox_crash_test' and 'make whitebox_crash_test' start running normally now (I haven't run them til the end, though).

Reviewers: vamsi

Reviewed By: vamsi

CC: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D12303
2013-08-15 10:14:32 -07:00
Mayank Agarwal
f3baeecd44 Adding filter_deletes to crash_tests run in jenkins
Summary: filter_deletes options introduced in db_stress makes it drop Deletes on key if KeyMayExist(key) returns false on the key. code change was simple and tested so not wasting reviewer's time.

Test Plan: maek crash_test; python tools/db_crashtest[1|2].py

CC: dhruba, vamsi

Differential Revision: https://reviews.facebook.net/D11769
2013-07-23 13:49:16 -07:00
Haobo Xu
0f78fad9f5 [RocksDB] add back --mmap_read options to crashtest
Summary: As title, now that db_stress supports --map_read properly

Test Plan: make crash_test

Reviewers: vamsi, emayanke, dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D11391
2013-06-19 16:15:59 -07:00
Haobo Xu
0c2a2dd5e8 [RocksDB] Fix build. Removed deprecated option --mmap_read from db_crashtest
Summary: As title

Test Plan: db_crashtest

Reviewers: vamsi, emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D11271
2013-06-13 13:48:35 -07:00
Mayank Agarwal
7a6bd8e975 Modifying options to db_stress when it is run with db_crashtest
Summary: These extra options caught some bugs. Will be run via Jenkins now with the crash_test

Test Plan: ./make crashtest

Reviewers: dhruba, vamsi

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D11151
2013-06-09 09:58:46 -07:00
Vamsi Ponnekanti
5cf7a00bda [Make most of the changes suggested by Aaron]
Summary: $title

Test Plan:
Revert Plan: OK

Task ID: #

Reviewers: emayanke, akushner

Reviewed By: akushner

Differential Revision: https://reviews.facebook.net/D10923
2013-06-06 17:31:45 -07:00
Mayank Agarwal
f51b375062 Printing the options that db_crashtest.py is run with
Summary: To know which options the crashtest was run with. Also changed print to sys.stdout.write which is more standard.

Test Plan: python tools/db_crashtest.py

Reviewers: vamsi, akushner, dhruba

Reviewed By: akushner

Differential Revision: https://reviews.facebook.net/D10119
2013-04-10 14:03:10 -07:00
Mayank Agarwal
faa32a72a6 Invoke crash test from the Makefile
Summary: make crash_test will now invoke the crash_test. Also some cleanup in the db_crashtest.py file

Test Plan: make crash_test

Reviewers: akushner, vamsi, sheki, dhruba

Reviewed By: vamsi

Differential Revision: https://reviews.facebook.net/D9987
2013-04-08 18:11:11 -07:00
Vamsi Ponnekanti
2b9a360c8b [Getting warning while running db_crashtest]
Summary:
When I run db_crashtest, I am seeing lot of warnings that say db_stress completed
before it was killed. To fix that I made ops per thread a very large value so that it keeps
running until it is killed.

I also set #reopens to 0. Since we are killing the process anyway, the 'simulated crash'
that happens during reopen may not add additional value.

I usually see 10-25K ops happening before the kill. So I increased max_key from 100 to
1000 so that we use more distinct keys.

Test Plan:
Ran a few times.

Revert Plan: OK

Task ID: #

Reviewers: emayanke

Reviewed By: emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D9909
2013-04-04 00:17:05 -07:00
Mayank Agarwal
e937d47180 Python script to periodically run and kill the db_stress test
Summary: The script runs and kills the stress test periodically. Default values have been used in the script now. Should I make this a part of the Makefile or automated rocksdb build? The values can be easily changed in the script right now, but should I add some support for variable values or input to the script? I believe the script achieves its objective of unsafe crashes and reopening to expect sanity in the database.

Test Plan: python tools/db_crashtest.py

Reviewers: dhruba, vamsi, MarkCallaghan

Reviewed By: vamsi

CC: leveldb

Differential Revision: https://reviews.facebook.net/D9369
2013-04-01 12:18:46 -07:00