Details
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Bug
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Status: Open (View Workflow)
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Major
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Resolution: Unresolved
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10.5, 10.6, 10.7, 10.8, 10.9, 10.10, 10.11, 11.0, 11.1
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None
Description
If the server crashes when executing a ONE PHASE XA transaction after it is prepared in the storage engine, but before it is binlogged, upon recovery, the binlogged transaction is incomplete. That is, only the XA COMMIT part of the transaction is logged, and the body of the XA transaction is lost. Consider the following MTR test which shows that an incomplete binary logging of a one phase XA transaction (only XA COMMIT '1' exists in the binary log when executing SHOW BINARY LOGS), and that replication breaks due to an unknown XID on query.
--source include/master-slave.inc
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--source include/have_innodb.inc
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#--source include/have_log_bin.inc
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--source include/have_binlog_format_statement.inc
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--echo #
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--echo # Initialize test data
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--connection master
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create table t1 (a int) engine=innodb;
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--source include/save_master_gtid.inc
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--connection slave
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--source include/sync_with_master_gtid.inc
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--connection master
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XA START '1';
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insert into t1 values (1);
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XA END '1';
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--enable_reconnect
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set session debug_dbug="+d,crash_commit_after_prepare";
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# Write file to make mysql-test-run.pl expect crash
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--exec echo "restart" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
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--error 2006,2013
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XA COMMIT '1' ONE PHASE;
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# Poll the server waiting for it to be back online again.
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--source include/wait_until_connected_again.inc
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XA RECOVER;
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XA COMMIT '1';
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show binlog events in 'master-bin.000002';
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--source include/save_master_gtid.inc
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--connection slave
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--let $slave_sql_errno= 1397
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--source include/wait_for_slave_sql_error.inc
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--query_vertical SHOW SLAVE STATUS
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die Quit early for error
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--echo #
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--echo # Cleanup
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--connection master
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DROP TABLE t1;
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--source include/save_master_gtid.inc
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--connection slave
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--source include/sync_with_master_gtid.inc
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--source include/rpl_end.inc
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--echo # End of test
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Output of show binlog events:
show binlog events in 'master-bin.000002';
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000002 4 Format_desc 1 256 Server ver: 11.2.0-MariaDB-debug-log, Binlog ver: 4
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master-bin.000002 256 Gtid_list 1 299 [0-1-1]
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master-bin.000002 299 Binlog_checkpoint 1 343 master-bin.000002
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master-bin.000002 343 Gtid 1 386 GTID 0-1-2
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master-bin.000002 386 Query 1 474 XA COMMIT X'31',X'',1
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And SHOW SLAVE STATUS error output:
Last_Errno 1397
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Last_Error Error 'XAER_NOTA: Unknown XID' on query. Default database: 'test'. Query: 'XA COMMIT X'31',X'',1'
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Attachments
Issue Links
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- Stalled
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