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0b87de124d
Implement --semi-sync-master-wait-point=AFTER_SYNC|AFTER_COMMIT. When AFTER_SYNC, the semi-sync wait will be done earlier, before the storage engine commit rather than after. This means that a transaction will not be visible on the master until at least one slave has received it.
255 lines
7.3 KiB
Plaintext
255 lines
7.3 KiB
Plaintext
source include/have_semisync.inc;
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source include/not_embedded.inc;
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source include/have_innodb.inc;
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#
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# This test the rpl_semi_sync_master_wait_point functionality
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# and illustrates the differences between the two values AFTER_COMMIT and
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# AFTER_SYNC
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#
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--echo #
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--echo # Preparation
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--echo #
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CREATE TABLE t1 (i INT NOT NULL, PRIMARY KEY (i)) ENGINE=InnoDB;
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RESET MASTER;
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let $save_timeout = `select @@global.rpl_semi_sync_master_timeout`;
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let $save_wait_no_slave = `select @@global.rpl_semi_sync_master_wait_no_slave`;
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let $save_wait_point = `select @@global.rpl_semi_sync_master_wait_point`;
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SET @@global.rpl_semi_sync_master_timeout = 60000;
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SET @@global.rpl_semi_sync_master_wait_no_slave = 1;
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--echo # It's okay to see "Killed" but we should not see "Timeout" in the log.
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call mtr.add_suppression("Killed waiting for reply of binlog");
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call mtr.add_suppression("Run function 'after_commit' in plugin 'rpl_semi_sync_master' failed");
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call mtr.add_suppression("Run function 'after_sync' in plugin 'rpl_semi_sync_master' failed");
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--echo #
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--echo # Test wait point = AFTER_COMMIT
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--echo #
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SET @@global.rpl_semi_sync_master_wait_point = AFTER_COMMIT;
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--echo # Make another connection to INSERT from.
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connect (other,localhost,root,,);
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connection other;
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let $other_connection_id = `SELECT CONNECTION_ID()`;
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connection default;
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--disable_query_log
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eval SET @other_connection_id = $other_connection_id;
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--enable_query_log
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SET GLOBAL rpl_semi_sync_master_enabled = 1;
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--echo # Go ahead and send the INSERT; it should block.
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connection other;
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send INSERT INTO t1 (i) VALUES (1);
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connection default;
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let $wait_condition =
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SELECT COUNT(*) > 0 AS should_be_true
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FROM information_schema.processlist
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WHERE id = @other_connection_id
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AND state = "Waiting for semi-sync ACK from slave";
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--source include/wait_condition.inc
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--echo # The INSERT thread should now be waiting.
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SELECT state AS should_be_waiting
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FROM information_schema.processlist WHERE id = @other_connection_id;
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--echo # The insert should be visible to other threads
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SELECT * FROM t1 ORDER BY 1;
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--echo # Kill the waiting thread; it should die immediately.
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KILL @other_connection_id;
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--echo # Collect the error from the INSERT thread; it should be disconnected.
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connection other;
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--error 2013,ER_CONNECTION_KILLED
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reap;
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connection default;
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--echo # Wait for INSERT thread to actually disappear (KILL closes connection
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--echo # before thread actually finishes its processing).
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let $wait_condition =
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SELECT COUNT(*) = 0 AS should_be_true
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FROM information_schema.processlist
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WHERE id = @other_connection_id;
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--source include/wait_condition.inc
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--echo # The INSERT thread should now be gone.
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SELECT state AS should_be_empty_set
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FROM information_schema.processlist WHERE id = @other_connection_id;
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--echo # The insert is still there
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SELECT * FROM t1 ORDER BY 1;
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connection default;
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disconnect other;
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--echo # Make another connection to INSERT from.
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connect (other,localhost,root,,);
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connection other;
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let $other_connection_id = `SELECT CONNECTION_ID()`;
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connection default;
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--disable_query_log
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eval SET @other_connection_id = $other_connection_id;
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--enable_query_log
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--echo # Go ahead and send the INSERT; it should block.
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connection other;
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send INSERT INTO t1 (i) VALUES (2);
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connection default;
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let $wait_condition =
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SELECT COUNT(*) > 0 AS should_be_true
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FROM information_schema.processlist
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WHERE id = @other_connection_id
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AND state = "Waiting for semi-sync ACK from slave";
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--source include/wait_condition.inc
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--echo # The INSERT thread should now be waiting.
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SELECT state AS should_be_waiting
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FROM information_schema.processlist WHERE id = @other_connection_id;
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--echo # The insert should be visible to other threads
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SELECT * FROM t1 ORDER BY 1;
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--echo # Now restart server
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--source include/restart_mysqld.inc
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--echo # Done restarting server
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--echo # Reset setting that were lost in restart
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SET @@global.rpl_semi_sync_master_timeout = 60000;
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SET @@global.rpl_semi_sync_master_wait_no_slave = 1;
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--echo # Check that row is still there
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SELECT * FROM t1 ORDER BY 1;
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disconnect other;
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--echo #
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--echo # Test wait point = AFTER_SYNC
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--echo #
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SET @@global.rpl_semi_sync_master_wait_point = AFTER_SYNC;
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--echo # Make another connection to INSERT from.
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connect (other,localhost,root,,);
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connection other;
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let $other_connection_id = `SELECT CONNECTION_ID()`;
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connection default;
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--disable_query_log
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eval SET @other_connection_id = $other_connection_id;
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--enable_query_log
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SET GLOBAL rpl_semi_sync_master_enabled = 1;
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--echo # Go ahead and send the INSERT; it should block.
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connection other;
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send INSERT INTO t1 (i) VALUES (3);
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connection default;
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let $wait_condition =
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SELECT COUNT(*) > 0 AS should_be_true
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FROM information_schema.processlist
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WHERE id = @other_connection_id
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AND state = "Waiting for semi-sync ACK from slave";
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--source include/wait_condition.inc
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--echo # The INSERT thread should now be waiting.
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SELECT state AS should_be_waiting
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FROM information_schema.processlist WHERE id = @other_connection_id;
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--echo # The insert should NOT be visible to other threads
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SELECT * FROM t1 ORDER BY 1;
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--echo # Kill the waiting thread; it should die immediately.
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KILL @other_connection_id;
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--echo # Collect the error from the INSERT thread; it should be disconnected.
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connection other;
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--error 2013,ER_CONNECTION_KILLED
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reap;
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connection default;
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--echo # Wait for INSERT thread to actually disappear (KILL closes connection
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--echo # before thread actually finishes its processing).
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let $wait_condition =
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SELECT COUNT(*) = 0 AS should_be_true
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FROM information_schema.processlist
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WHERE id = @other_connection_id;
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--source include/wait_condition.inc
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--echo # The INSERT thread should now be gone.
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SELECT state AS should_be_empty_set
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FROM information_schema.processlist WHERE id = @other_connection_id;
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--echo # The row inserted is there
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SELECT * FROM t1 ORDER BY 1;
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connection default;
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disconnect other;
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--echo # Make another connection to INSERT from.
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connect (other,localhost,root,,);
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connection other;
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let $other_connection_id = `SELECT CONNECTION_ID()`;
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connection default;
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--disable_query_log
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eval SET @other_connection_id = $other_connection_id;
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--enable_query_log
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--echo # Go ahead and send the INSERT; it should block.
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connection other;
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send INSERT INTO t1 (i) VALUES (4);
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connection default;
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let $wait_condition =
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SELECT COUNT(*) > 0 AS should_be_true
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FROM information_schema.processlist
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WHERE id = @other_connection_id
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AND state = "Waiting for semi-sync ACK from slave";
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--source include/wait_condition.inc
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--echo # The INSERT thread should now be waiting.
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SELECT state AS should_be_waiting
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FROM information_schema.processlist WHERE id = @other_connection_id;
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--echo # The insert should NOT be visible to other threads
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SELECT * FROM t1 ORDER BY 1;
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--echo # Now restart server
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--source include/restart_mysqld.inc
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--echo # Done restarting server
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--echo # Reset setting that were lost in restart
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SET @@global.rpl_semi_sync_master_timeout = 60000;
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SET @@global.rpl_semi_sync_master_wait_no_slave = 1;
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--echo # But the row inserted is there
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SELECT * FROM t1 ORDER BY 1;
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disconnect other;
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--echo #
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--echo # Cleanup
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--echo #
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SET GLOBAL rpl_semi_sync_master_enabled = 0;
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DROP TABLE t1;
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eval SET @@global.rpl_semi_sync_master_timeout = $save_timeout;
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eval SET @@global.rpl_semi_sync_master_wait_no_slave = $save_wait_no_slave;
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eval SET @@global.rpl_semi_sync_master_wait_point = $save_wait_point;
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