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DEBUG_SYNC signals can get lost in certain tests due to later DEBUG_SYNC commands overwriting them. This patch addresses these issues in three tests: main.query_cache_debug, main.partition_debug_sync, and rpl.rpl_dump_request_retry_warning. Additionally, main.partition_debug_sync needed changes to the result file (the others did not). The synchronization happened between two commands, one based on ALTER, the other on DROP. A new thread/connection was needed to synchronize the DEBUG_SYNC actions between these commands, thereby changing the result file. Additional comments were added for clarification. Reviewed By: ============ Andrei Elkin <andrei.elkin@mariadb.com>
67 lines
2.1 KiB
Plaintext
67 lines
2.1 KiB
Plaintext
# ==== Purpose ====
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#
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# Test verifies that, due to a temporary network error, if request dump
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# command specific packet write operation fails then the write error gets
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# handled appropriately. Further retry will be initiated with appropriate
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# slave registration on master. This will ensure that master has all the
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# details of slave and no warnings are reported on the master side.
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#
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# ==== Implementation ====
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#
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# Steps:
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# 0 - Skip the slave start.
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# 1 - Enable debug simulation which will simulate packet write error during
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# dump request command execution.
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# 2 - Start the slave. Observe that slave is able to reconnect post
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# temporary network write error.
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#
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# ==== References ====
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#
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# MDEV-14203: rpl.rpl_extra_col_master_myisam,
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# rpl.rpl_slave_load_tmpdir_not_exist failed in buildbot with a
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# warning
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#
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# MDEV-13258: rpl.rpl_skip_replication, rpl.rpl_set_statement_default_master
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# failed in buildbot
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#
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--source include/have_debug.inc
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--source include/have_debug_sync.inc
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--let $rpl_skip_start_slave=1
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--source include/master-slave.inc
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# Do an insert on master
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CREATE TABLE t1(a int);
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INSERT INTO t1 VALUES(1);
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# Add a debug point and start the slave so that dump request fails.
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connection slave;
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SET @saved_dbug = @@GLOBAL.debug_dbug;
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SET @@global.debug_dbug= 'd,simulate_error_on_packet_write';
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START SLAVE;
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SET DEBUG_SYNC= 'now WAIT_FOR parked';
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SET @@GLOBAL.debug_dbug = @saved_dbug;
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SET DEBUG_SYNC= 'now SIGNAL continue';
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# Ensure the last DEBUG_SYNC signal was received by the target thread before
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# reset; otherwise, the reset can drop the last signal before it gets
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# acknowledged
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let $wait_condition= select count(*)=0 from information_schema.processlist where state like "%debug%";
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source include/wait_condition.inc;
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SET DEBUG_SYNC= 'RESET';
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--source include/wait_for_slave_io_to_start.inc
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--source include/wait_for_slave_sql_to_start.inc
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# Sync the slave and verify that slave has caught up with the master.
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connection master;
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--source include/sync_slave_sql_with_master.inc
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SELECT * FROM t1;
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# Cleanup
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connection master;
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DROP TABLE t1;
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--source include/rpl_end.inc
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