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62dca454e7
PROBLEM When truncating single tablespace tables, we need to scan the entire buffer pool to remove the pages of the table from the buffer pool. During this scan and removal dict_sys->mutex is being held ,causing stalls in other DDL operations. FIX Release the dict_sys->mutex during the scan and reacquire it after the scan. Make sure that purge thread doesn't purge the records of the table being truncated and background stats collection thread skips the updation of stats for the table being truncated. [#rb 14564 Approved by Jimmy and satya ]
195 lines
5.2 KiB
Plaintext
195 lines
5.2 KiB
Plaintext
--source include/have_innodb.inc
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--source include/have_debug.inc
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--source include/have_debug_sync.inc
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--echo #
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--echo # Bug #23070734 CONCURRENT TRUNCATE TABLES CAUSE STALLS
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--echo #
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--echo Test_1 :- Check if DDL operations are possible on
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--echo table being truncated. Also check if
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--echo 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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connect (con1,localhost,root,,);
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connect (con2,localhost,root,,);
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--echo connection 1
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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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--send truncate table t1;
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--echo connection default
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connection default;
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SET DEBUG_SYNC= 'now WAIT_FOR opened';
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--echo Check Analyze table. Gives lock time out error.
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analyze table t1;
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--echo Check if we can turn off auto recalculation.
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--error ER_LOCK_WAIT_TIMEOUT
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alter table t1 STATS_AUTO_RECALC=0;
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--echo Check if we can turn off persistent stats on the table
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--error ER_LOCK_WAIT_TIMEOUT
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alter table t1 STATS_PERSISTENT=0;
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--echo Check if DML is possible on table being truncated
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--error ER_LOCK_WAIT_TIMEOUT
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insert into t1 values (10,89,99);
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--echo Check if DDL is possible on table being truncated
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--error ER_LOCK_WAIT_TIMEOUT
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alter table t1 add column f4 int;
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--echo check if table can be created with the same name
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--error ER_LOCK_WAIT_TIMEOUT
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create table t1 (bd int) engine=innodb;
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--echo check if index can be created on table being truncated
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--error ER_LOCK_WAIT_TIMEOUT
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create index idx1 on t1(f1);
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--echo Check if DROP of table is possible during truncate
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--error ER_LOCK_WAIT_TIMEOUT
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drop table t1;
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--echo Check if select is possible during truncate
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--error ER_LOCK_WAIT_TIMEOUT
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select * from t1;
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--error ER_BAD_FIELD_ERROR
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select * from t2 where t2.f1=t1.f1;
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--echo Check concurrent truncate operation on table;
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--error ER_LOCK_WAIT_TIMEOUT
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truncate table t1;
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--echo 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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--echo Concurrent truncate on other tables
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truncate table t2;
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--echo Concurrent alters on the other tables
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alter table t2 add column f4 int;
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--echo check if index can be created on the other table
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create index idx1 on t2(f3);
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--echo 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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--echo connection con2
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connection con2;
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--send set global innodb_adaptive_hash_index=off;
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--echo connection default
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connection default;
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SET DEBUG_SYNC= 'now SIGNAL finish_scan';
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--echo connection con1
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connection con1;
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reap;
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--echo connection con2
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connection con2;
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reap;
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--echo connection default
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connection default;
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disconnect con1;
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disconnect con2;
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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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--echo Test_2 :- Check if purge thread ignores the undo
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--echo log records of the table being truncated.
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let $restart_parameters = restart: --innodb_purge_threads=1 --innodb_purge_batch_size=1 --innodb_stats_persistent=OFF
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--source include/restart_mysqld.inc;
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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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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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--echo 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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connect (con1,localhost,root,,);
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--echo connection con1
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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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--send truncate table t1;
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--echo Connection default
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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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--sleep 60
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SET DEBUG_SYNC= 'now SIGNAL finish_scan';
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--echo connection con1
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connection con1;
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reap;
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--echo connection default
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connection default;
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disconnect con1;
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drop table t1;
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let SEARCH_FILE = $MYSQLTEST_VARDIR/log/mysqld.1.err;
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let SEARCH_PATTERN = InnoDB: Record with space id \d+ belongs to table which is being truncated therefore skipping this undo record.;
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--source include/search_pattern.inc
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#cleanup
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--echo # restart server
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let $restart_parameters = restart:;
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--source include/restart_mysqld.inc
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