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commit f8f364b47f2784f16b401f27658f1c16eaf348ec Author: Jay Edgar <jkedgar@fb.com> Date: Tue Oct 17 15:19:31 2017 -0700 Add a hashed, hierarchical, wheel timer implementation Summary: In order to implement idle timeouts on detached sessions we need something inside MySQL that is lightweight and can handle calling events in the future with very little cost for cancelling or resetting the event. A hashed, hi By default the timers are grouped into 10ms buckets (the 'hashed' part), though the size of the buckets is configurable at the creation of the timer. Each wheel (the 'wheel' part) maintains 256 buckets and cascades to the whe Reviewed By: djwatson Differential Revision: D6199806 fbshipit-source-id: 5e1590f
78 lines
2.7 KiB
Plaintext
78 lines
2.7 KiB
Plaintext
--source include/have_rocksdb.inc
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--source include/have_binlog_format_row.inc
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--source include/have_debug.inc
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--source include/have_debug_sync.inc
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--source include/big_test.inc
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# The test involves a crash which does not seem to be handled well with
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# mysql-test/lib/My/SafeProcess/my_safe_process under valgrind as it hangs
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# forever. The test did not mean to verify the memory leaks so not much
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# coverage should be missed by not running it under valgrind.
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--source include/not_valgrind.inc
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--exec echo > $MYSQLTEST_VARDIR/log/mysqld.1.err
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--disable_warnings
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DROP TABLE IF EXISTS t1;
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--enable_warnings
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# Set it to the minimum so that we can make the binlog rotate with a few inserts
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SET GLOBAL MAX_BINLOG_SIZE = 4096;
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SET GLOBAL ROCKSDB_ENABLE_2PC = ON;
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create table t1 (a int primary key, b int, c varchar(255)) engine=rocksdb;
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connect (con1, localhost, root,,);
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connect (con2, localhost, root,,);
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# On connection one we insert a row and pause after prepare marker is written to
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# WAL. Connection two then inserts many rows to rotate the binlog. After
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# connection two completes, connection one continues only to crash before commit
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# but after binlog write. On crash recovery we see that connection one's value
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# has been recovered and commited
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connection con1;
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--echo 'con1'
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--exec echo "restart" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
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SET SESSION debug="d,crash_commit_after_log";
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SET DEBUG_SYNC='rocksdb.prepared SIGNAL parked WAIT_FOR go';
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--error 0,2013
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--send insert into t1 values (1, 1, "iamtheogthealphaandomega");
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connection con2;
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--echo 'con2'
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insert into t1 values (2, 1, "i_am_just_here_to_trigger_a_flush");
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# Disable 2PC and syncing for faster inserting of dummy rows
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# These rows only purpose is to rotate the binlog
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SET GLOBAL ROCKSDB_FLUSH_LOG_AT_TRX_COMMIT = 0;
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SET GLOBAL SYNC_BINLOG = 0;
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SET DEBUG_SYNC='now WAIT_FOR parked';
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--disable_query_log
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--let $pk= 3
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# binlog size is 4096 bytes so with that many insertion it will definitely rotate
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while ($pk < 4096) {
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eval insert into t1 values ($pk, 1, "foobardatagoesheresothatmorelogsrollwhichiswhatwewant");
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--inc $pk
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}
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--enable_query_log
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# re-enable 2PC an syncing then write to trigger a flush
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# before we trigger the crash to simulate full-durability
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SET GLOBAL ROCKSDB_FLUSH_LOG_AT_TRX_COMMIT = 2;
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SET GLOBAL SYNC_BINLOG = 1;
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insert into t1 values (1000000, 1, "i_am_just_here_to_trigger_a_flush");
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--error 0,2013
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SET DEBUG_SYNC='now SIGNAL go';
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--source include/wait_until_disconnected.inc
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--enable_reconnect
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--source include/wait_until_connected_again.inc
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--disable_reconnect
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--exec python suite/rocksdb/t/check_log_for_xa.py $MYSQLTEST_VARDIR/log/mysqld.1.err commit,prepare,rollback
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select * from t1 where a=1;
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select count(*) from t1;
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drop table t1;
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