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MDEV-7402 'reset master' hangs, waits for signalled COND_xid_list

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Using a boolean flag for 'there is a RESET MASTER in progress' doesn't
work very well for multiple concurrent RESET MASTER statements.
Changed to a counter.
This commit is contained in:
Sergei Golubchik
2015-01-19 14:32:28 +01:00
parent 73ebabd2ee
commit 510ca9b697
4 changed files with 48 additions and 4 deletions
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12
mysql-test/suite/binlog/r/binlog_checkpoint.result
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@@ -112,6 +112,18 @@ master-bin.000003 #
master-bin.000004 #
master-bin.000005 #
master-bin.000006 #
SET debug_sync = 'reset';
*** MDEV-7402: 'reset master' hangs, waits for signalled COND_xid_list ***
SET debug_sync="reset_logs_after_set_reset_master_pending SIGNAL reset_master_ready WAIT_FOR reset_master_cont";
RESET MASTER;
SET @old_dbug= @@global.DEBUG_DBUG;
SET GLOBAL debug_dbug="+d,inject_binlog_background_thread_before_mark_xid_done";
SET debug_sync="now WAIT_FOR reset_master_ready";
RESET MASTER;
SET debug_sync="now WAIT_FOR injected_binlog_background_thread";
SET GLOBAL debug_dbug=@old_dbug;
SET debug_sync="now SIGNAL reset_master_cont";
SET debug_sync = 'reset';
DROP TABLE t1, t2;
SET GLOBAL max_binlog_size= @old_max_binlog_size;
SET GLOBAL innodb_flush_log_at_trx_commit= @old_innodb_flush_log_at_trx_commit;