118 lines
4.4 KiB
Plaintext
118 lines
4.4 KiB
Plaintext
#
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# Bug #23070734 CONCURRENT TRUNCATE TABLES CAUSE STALLS
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#
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Test_1 :- Check if DDL operations are possible on
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table being truncated. Also check if
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DDL operations on other tables succeed.
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create table t1 (f1 int,f2 int,key(f2),f3 int) engine=innodb;
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create index idx1 on t1(f3);
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create table t2 (f1 int,f2 int,key(f2),f3 int) engine=innodb;
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create table t3 (f1 int,f2 int,key(f2)) engine=innodb;
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insert into t1 values (10,20,30),(30,40,50),(50,60,70);
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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insert into t2 values (10,20,30),(30,40,50),(50,60,70);
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insert into t2 select * from t2;
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insert into t2 select * from t2;
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insert into t2 select * from t2;
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insert into t3 values (10,20),(30,40),(50,50);
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insert into t3 select * from t3;
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insert into t3 select * from t3;
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SET session lock_wait_timeout = 1;
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show variables like 'lock_wait_timeout%';
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Variable_name Value
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lock_wait_timeout 1
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connection 1
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SET DEBUG_SYNC= 'simulate_buffer_pool_scan SIGNAL opened WAIT_FOR finish_scan';
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truncate table t1;;
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connection default
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SET DEBUG_SYNC= 'now WAIT_FOR opened';
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Check Analyze table. Gives lock time out error.
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analyze table t1;
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Table Op Msg_type Msg_text
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test.t1 analyze Error Lock wait timeout exceeded; try restarting transaction
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test.t1 analyze status Operation failed
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Check if we can turn off auto recalculation.
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alter table t1 STATS_AUTO_RECALC=0;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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Check if we can turn off persistent stats on the table
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alter table t1 STATS_PERSISTENT=0;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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Check if DML is possible on table being truncated
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insert into t1 values (10,89,99);
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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Check if DDL is possible on table being truncated
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alter table t1 add column f4 int;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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check if table can be created with the same name
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create table t1 (bd int) engine=innodb;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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check if index can be created on table being truncated
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create index idx1 on t1(f1);
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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Check if DROP of table is possible during truncate
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drop table t1;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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Check if select is possible during truncate
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select * from t1;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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select * from t2 where t2.f1=t1.f1;
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ERROR 42S22: Unknown column 't1.f1' in 'where clause'
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Check concurrent truncate operation on table;
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truncate table t1;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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Check concurrent selects and inserts on the other table
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insert into t3 values (10,20),(30,40),(50,50);
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select * from t3 where f1=40;
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f1 f2
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Concurrent truncate on other tables
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truncate table t2;
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Concurrent alters on the other tables
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alter table t2 add column f4 int;
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check if index can be created on the other table
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create index idx1 on t2(f3);
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Check if we can turn off persistent stats off entire instance
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SET GLOBAL innodb_stats_persistent=off;
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connection con2
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set global innodb_adaptive_hash_index=off;;
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connection default
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SET DEBUG_SYNC= 'now SIGNAL finish_scan';
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connection con1
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connection con2
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connection default
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SET session lock_wait_timeout=default;
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set global innodb_adaptive_hash_index=default;
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drop table t1,t2,t3;
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SET @@global.innodb_stats_persistent=default;
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Test_2 :- Check if purge thread ignores the undo
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log records of the table being truncated.
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create table t1 (f1 int ,f2 int,key(f2)) engine=innodb;
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insert into t1 values (10,45),(20,78),(30,88),(40,23),(50,78),(60,11),(70,56),(80,90);
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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select count(*) from t1;
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count(*)
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1024
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Stop the purge thread
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set global innodb_purge_stop_now = 1;
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delete from t1;
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connection con1
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SET DEBUG_SYNC= 'simulate_buffer_pool_scan SIGNAL opened WAIT_FOR finish_scan';
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truncate table t1;;
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Connection default
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SET DEBUG_SYNC= 'now WAIT_FOR opened';
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set global innodb_purge_run_now=1;
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SET DEBUG_SYNC= 'now SIGNAL finish_scan';
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connection con1
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connection default
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drop table t1;
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Pattern "InnoDB: Record with space id \d+ belongs to table which is being truncated therefore skipping this undo record." found
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# restart server
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# restart:
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