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3c92050d1c
There are separate flags DBUG_OFF for disabling the DBUG facility and ENABLED_DEBUG_SYNC for enabling the DEBUG_SYNC facility. Let us allow debug builds without DEBUG_SYNC. Note: For CMAKE_BUILD_TYPE=Debug, CMakeLists.txt will continue to define ENABLED_DEBUG_SYNC.
81 lines
2.2 KiB
Text
81 lines
2.2 KiB
Text
# Let's see if FLUSH TABLES WITH READ LOCK can be killed when waiting
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# for running commits to finish (in the past it could not)
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# This will not be a meaningful test on non-debug servers so will be
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# skipped.
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# This also won't work with the embedded server test
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--source include/not_embedded.inc
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--source include/have_debug.inc
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--source include/have_debug_sync.inc
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# This test needs transactional engine as otherwise COMMIT
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# won't block FLUSH TABLES WITH GLOBAL READ LOCK.
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--source include/have_innodb.inc
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# Save the initial number of concurrent sessions
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--source include/count_sessions.inc
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connect (con1,localhost,root,,);
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connect (con2,localhost,root,,);
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connection con1;
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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 DEBUG_SYNC= 'RESET';
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CREATE TABLE t1 (kill_id INT) engine = InnoDB;
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INSERT INTO t1 VALUES(connection_id());
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connection default;
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--echo # Start transaction.
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BEGIN;
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INSERT INTO t1 VALUES(connection_id());
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--echo # Ensure that COMMIT will pause once it acquires protection
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--echo # against its global read lock.
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SET DEBUG_SYNC='ha_commit_trans_after_acquire_commit_lock SIGNAL acquired WAIT_FOR go';
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--echo # Sending:
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--send COMMIT
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connection con1;
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--echo # Wait till COMMIT acquires protection against global read
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--echo # lock and pauses.
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SET DEBUG_SYNC='now WAIT_FOR acquired';
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--echo # Sending:
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send FLUSH TABLES WITH READ LOCK;
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connection con2;
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SELECT ((@id := kill_id) - kill_id) FROM t1 LIMIT 1;
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--echo # Wait till FLUSH TABLES WITH READ LOCK blocks due
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--echo # to active COMMIT
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Waiting for backup lock"
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and info = "flush tables with read lock";
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--source include/wait_condition.inc
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--echo # Kill connection 'con1'.
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KILL CONNECTION @id;
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connection con1;
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--echo # Try to reap FLUSH TABLES WITH READ LOCK,
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--echo # it fail due to killed statement and connection.
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--error 1317,2013
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reap;
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connection con2;
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--echo # Resume COMMIT.
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SET DEBUG_SYNC='now SIGNAL go';
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connection default;
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--echo # Reaping COMMIT.
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--reap
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disconnect con2;
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DROP TABLE t1;
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SET DEBUG_SYNC= 'RESET';
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# Wait till all disconnects are completed
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--source include/wait_until_count_sessions.inc
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