Improve stress test for transactions ( #9568 )
...
Summary:
Test only, no change to functionality.
Extremely low risk of library regression.
Update test key generation by maintaining existing and non-existing keys.
Update db_crashtest.py to drive multiops_txn stress test for both write-committed and write-prepared.
Add a make target 'blackbox_crash_test_with_multiops_txn'.
Running the following commands caught the bug exposed in https://github.com/facebook/rocksdb/issues/9571 .
```
$rm -rf /tmp/rocksdbtest/*
$./db_stress -progress_reports=0 -test_multi_ops_txns -use_txn -clear_column_family_one_in=0 \
-column_families=1 -writepercent=0 -delpercent=0 -delrangepercent=0 -customopspercent=60 \
-readpercent=20 -prefixpercent=0 -iterpercent=20 -reopen=0 -ops_per_thread=1000 -ub_a=10000 \
-ub_c=100 -destroy_db_initially=0 -key_spaces_path=/dev/shm/key_spaces_desc -threads=32 -read_fault_one_in=0
$./db_stress -progress_reports=0 -test_multi_ops_txns -use_txn -clear_column_family_one_in=0
-column_families=1 -writepercent=0 -delpercent=0 -delrangepercent=0 -customopspercent=60 -readpercent=20 \
-prefixpercent=0 -iterpercent=20 -reopen=0 -ops_per_thread=1000 -ub_a=10000 -ub_c=100 -destroy_db_initially=0 \
-key_spaces_path=/dev/shm/key_spaces_desc -threads=32 -read_fault_one_in=0
```
Running the following command caught a bug which will be fixed in https://github.com/facebook/rocksdb/issues/9648 .
```
$TEST_TMPDIR=/dev/shm make blackbox_crash_test_with_multiops_wc_txn
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9568
Reviewed By: jay-zhuang
Differential Revision: D34308154
Pulled By: riversand963
fbshipit-source-id: 99ff1b65c19b46c471d2f2d3b47adcd342a1b9e7
Yanqin Jin