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Merge branch '10.2' into 10.3
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27
mysql-test/main/multi_update_debug.test
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27
mysql-test/main/multi_update_debug.test
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#
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# test MDL backoff-and-retry during multi-update
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#
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source include/have_debug_sync.inc;
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create table t1 (a int, b int);
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create table t2 (c int, d int);
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insert t1 values (1,2),(3,4);
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insert t2 values (5,6),(7,8);
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create table t0 (x int);
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insert t0 values (11), (22);
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create trigger tr1 before update on t1 for each row insert t0 values (new.b);
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set debug_sync='open_tables_after_open_and_process_table WAIT_FOR cont';
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send update t1 join t2 on (a=c+4) set b=d;
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connect con1, localhost, root;
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let $wait_condition= select count(*) from information_schema.processlist where state = ' debug sync point: open_tables_after_open_and_process_table'
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source include/wait_condition.inc;
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set debug_sync='mdl_acquire_lock_wait SIGNAL cont';
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lock table t1 write, t0 write;
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let $wait_condition= select count(*) from information_schema.processlist where state = 'Waiting for table metadata lock'
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source include/wait_condition.inc;
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disconnect con1;
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connection default;
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reap;
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drop table t1, t2, t0;
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set debug_sync='reset';
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