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If a query referenced some system statistical tables, but not all of them, then executing an ANALYZE command simultaneously with this query could lead to a deadlock. The fix prohibited reading statistics from system statistical tables for such queries. Removed the function unlock_tables_n_open_system_tables_for_write() as not used anymore. Performed some minor refactoring of the code in sql_statistics.cc.
245 lines
6.3 KiB
Text
245 lines
6.3 KiB
Text
--source include/have_stat_tables.inc
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--source include/have_debug_sync.inc
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--source include/not_embedded.inc
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set @save_use_stat_tables=@@use_stat_tables;
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set use_stat_tables='preferably';
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--disable_warnings
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DROP DATABASE IF EXISTS dbt3_s001;
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--enable_warnings
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CREATE DATABASE dbt3_s001;
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use dbt3_s001;
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set @save_optimizer_switch=@@optimizer_switch;
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set optimizer_switch='extended_keys=off';
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--disable_query_log
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--disable_result_log
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--disable_warnings
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--source include/dbt3_s001.inc
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delete from mysql.table_stats;
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delete from mysql.column_stats;
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delete from mysql.index_stats;
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ANALYZE TABLE
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customer, lineitem, nation, orders, part, partsupp, region, supplier;
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--enable_warnings
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--enable_result_log
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--enable_query_log
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select * from mysql.table_stats;
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select * from mysql.index_stats;
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#
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# Test for parallel memory allocation for statistical data
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#
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# assumes that start the code of memory allocation for stats data has this line:
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#
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# DEBUG_SYNC(thd, "statistics_mem_alloc_start1");
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# DEBUG_SYNC(thd, "statistics_mem_alloc_start2");
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#
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let $Q6=
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select sum(l_extendedprice*l_discount) as revenue
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from lineitem
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where l_shipdate >= date '1994-01-01'
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and l_shipdate < date '1994-01-01' + interval '1' year
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and l_discount between 0.06 - 0.01 and 0.06 + 0.01
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and l_quantity < 24;
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flush table lineitem;
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set use_stat_tables='never';
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eval $Q6;
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connect (con1, localhost, root,,);
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connect (con2, localhost, root,,);
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connection con1;
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set debug_sync='statistics_mem_alloc_start1 WAIT_FOR second_thread_started_too';
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set debug_sync='statistics_mem_alloc_start2 SIGNAL first_thread_working';
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use dbt3_s001;
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set use_stat_tables='preferably';
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--send_eval $Q6
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connection con2;
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set debug_sync='statistics_mem_alloc_start1 SIGNAL second_thread_started_too';
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set debug_sync='statistics_mem_alloc_start2 WAIT_FOR first_thread_working';
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use dbt3_s001;
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set use_stat_tables='preferably';
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--send_eval $Q6
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connection con1;
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--reap
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connection con2;
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--reap
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connection default;
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set use_stat_tables='preferably';
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disconnect con1;
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disconnect con2;
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set debug_sync='RESET';
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#
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# Test for parallel statistics collection
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#
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# assumes that start of stats collection code has this line:
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#
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# DEBUG_SYNC(thd, "statistics_collection_start1");
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# DEBUG_SYNC(thd, "statistics_collection_start2");
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#
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select * from mysql.index_stats where table_name='lineitem' order by index_name;
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delete from mysql.index_stats
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where table_name='lineitem' and
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index_name in ('i_l_shipdate', 'i_l_receiptdate');
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select * from mysql.index_stats where table_name='lineitem' order by index_name;
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--disable_result_log
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--disable_warnings
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analyze table lineitem persistent for columns() indexes (i_l_shipdate);
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--enable_warnings
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--enable_result_log
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select * from mysql.index_stats where table_name='lineitem' order by index_name;
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delete from mysql.index_stats
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where table_name='lineitem' and index_name= 'i_l_shipdate';
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select * from mysql.index_stats where table_name='lineitem' order by index_name;
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connect (con1, localhost, root,,);
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connect (con2, localhost, root,,);
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connection con1;
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set debug_sync='statistics_collection_start1 WAIT_FOR second_thread_started_too';
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set debug_sync='statistics_collection_start2 SIGNAL first_thread_working';
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use dbt3_s001;
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set use_stat_tables='preferably';
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--send analyze table lineitem persistent for columns() indexes (i_l_shipdate)
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connection con2;
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set debug_sync='statistics_collection_start1 SIGNAL second_thread_started_too';
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set debug_sync='statistics_collection_start2 WAIT_FOR first_thread_working';
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use dbt3_s001;
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set use_stat_tables='preferably';
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--send analyze table lineitem persistent for columns() indexes (i_l_receiptdate)
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connection con1;
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--disable_result_log
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--disable_warnings
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--reap
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--enable_warnings
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--enable_result_log
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connection con2;
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--disable_result_log
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--disable_warnings
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--reap
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--enable_warnings
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--enable_result_log
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connection default;
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disconnect con1;
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disconnect con2;
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set debug_sync='RESET';
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select * from mysql.index_stats where table_name='lineitem' order by index_name;
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#
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# Test for parallel statistics collection and update (innodb)
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#
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select * from mysql.index_stats where table_name='lineitem'
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order by index_name, prefix_arity;
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set debug_sync='RESET';
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let $innodb_storage_engine= 0;
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if (`SELECT UPPER(@@storage_engine) = 'INNODB'`)
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{
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let $innodb_storage_engine= 1;
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}
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connect (con1, localhost, root,,);
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connect (con2, localhost, root,,);
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connection con1;
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set debug_sync='statistics_collection_start SIGNAL parked WAIT_FOR finish';
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use dbt3_s001;
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set use_stat_tables='preferably';
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--send analyze table lineitem persistent for all
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connection con2;
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set debug_sync='now WAIT_FOR parked';
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use dbt3_s001;
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set use_stat_tables='never';
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if ($innodb_storage_engine)
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{
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select * from lineitem where l_orderkey=1 and l_partkey=156;
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delete from lineitem where l_orderkey=1 and l_partkey=156;
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select * from lineitem where l_orderkey=1 and l_partkey=156;
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}
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set debug_sync='now SIGNAL finish';
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connection con1;
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--disable_result_log
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--disable_warnings
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--reap
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--enable_warnings
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--enable_result_log
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connection default;
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disconnect con1;
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disconnect con2;
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set debug_sync='RESET';
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select * from mysql.index_stats where table_name='lineitem'
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order by index_name, prefix_arity;
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#
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# Bug mdev-3891: deadlock for ANALYZE and SELECT over mysql.index_stats
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#
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set @save_global_use_stat_tables=@@global.use_stat_tables;
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set global use_stat_tables='preferably';
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set debug_sync='RESET';
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connect (con1, localhost, root,,);
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connect (con2, localhost, root,,);
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connection con1;
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set debug_sync='statistics_update_start SIGNAL parker WAIT_FOR go1 EXECUTE 1';
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set debug_sync='thr_multi_lock_after_thr_lock SIGNAL go2 EXECUTE 2';
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use dbt3_s001;
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--send analyze table lineitem persistent for all
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connection con2;
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set debug_sync='open_and_process_table WAIT_FOR parker';
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set debug_sync='statistics_read_start SIGNAL go1 WAIT_FOR go2';
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use dbt3_s001;
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--send select * from mysql.index_stats, lineitem where index_name= 'i_l_shipdate' and l_orderkey=1 and l_partkey=68
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connection con1;
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--disable_result_log
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--disable_warnings
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--reap
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--enable_warnings
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--enable_result_log
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connection con2;
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--disable_warnings
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--reap
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--enable_warnings
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connection default;
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disconnect con1;
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disconnect con2;
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set debug_sync='RESET';
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set global use_stat_tables=@save_global_use_stat_tables;
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DROP DATABASE dbt3_s001;
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use test;
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set use_stat_tables=@save_use_stat_tables;
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