71 lines
1.9 KiB
Plaintext
71 lines
1.9 KiB
Plaintext
--echo #Test for Exclusive, GAP locks
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-- connect (con1,localhost,root,,)
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-- connect (con2,localhost,root,,)
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-- connect (con3,localhost,root,,)
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--disable_warnings
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drop table if exists t1_x_gap;
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--enable_warnings
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--connection con1
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use test;
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create table t1_x_gap (id int(10) primary key, x int(10)) engine=INNODB;
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insert into t1_x_gap values (1,10),(2,20),(3,30),(4,40),(5,50);
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start transaction;
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select * from t1_x_gap where id<5 for update;
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--connection con3
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select object_schema, object_name, lock_type, lock_mode, lock_status, lock_data
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from performance_schema.data_locks
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where object_name="t1_x_gap"
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order by lock_type, lock_mode, lock_status, lock_data;
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--connection con2
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start transaction;
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-- send
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insert into t1_x_gap values (0,0);
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-- connection default
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let $wait_condition= SELECT COUNT(*)>=1 FROM performance_schema.data_locks
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where OBJECT_NAME='t1_x_gap' and LOCK_STATUS='WAITING';
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--source include/wait_condition.inc
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--connection con3
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# Do not display LOCK_DATA, it can be NULL,
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# upon eviction from the innodb buffer pool
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select object_schema, object_name, lock_type, lock_mode, lock_status
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from performance_schema.data_locks
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where object_name="t1_x_gap"
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order by lock_type, lock_mode, lock_status;
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--connection con1
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commit;
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# Wait for the con2 waiting lock to be granted, now that con1 is gone.
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-- connection default
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let $wait_condition= SELECT COUNT(*)=0 FROM performance_schema.data_locks
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where OBJECT_NAME='t1_x_gap' and LOCK_STATUS='WAITING';
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--source include/wait_condition.inc
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--connection con3
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select object_schema, object_name, lock_type, lock_mode, lock_status
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from performance_schema.data_locks
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where object_name="t1_x_gap";
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--connection con2
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-- reap
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commit;
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--connection con1
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drop table t1_x_gap;
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--connection default
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--disconnect con1
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--disconnect con2
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--disconnect con3
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let $count_sessions= 1;
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--source include/wait_until_count_sessions.inc
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