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9edadc29b1
- Changed the performance schema query which gives sampling with event counting. It should fix the issue.
22 lines
924 B
Plaintext
22 lines
924 B
Plaintext
select count_star into @init_count from performance_schema.events_waits_summary_global_by_event_name WHERE event_name LIKE '%wait%io%file%innodb%innodb_temp_file%';
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connect ddl, localhost, root,,;
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update performance_schema.setup_instruments set enabled='yes';
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update performance_schema.setup_consumers set enabled='yes';
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CREATE TABLE t1 (a serial, b varchar(255)) ENGINE=InnoDB;
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BEGIN;
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COMMIT;
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SET DEBUG_SYNC = 'row_log_apply_before SIGNAL go WAIT_FOR gone';
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ALTER TABLE t1 ADD INDEX(b), ALGORITHM=INPLACE;
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connection default;
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SET DEBUG_SYNC = 'now WAIT_FOR go';
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select count_star into @final_count from performance_schema.events_waits_summary_global_by_event_name WHERE event_name LIKE '%wait%io%file%innodb%innodb_temp_file%';
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SELECT @final_count - @init_count;
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@final_count - @init_count
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11
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SET DEBUG_SYNC = 'now SIGNAL gone';
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connection ddl;
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disconnect ddl;
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connection default;
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SET DEBUG_SYNC = 'RESET';
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DROP TABLE t1;
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