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into magare.gmz:/home/kgeorge/mysql/work/B30377-5.1-opt mysql-test/t/status.test: Auto merged mysql-test/r/status.result: merge 5.0->5.1 of the fix for bug 30377 sql/sql_lex.h: merge 5.0->5.1 of the fix for bug 30377 sql/sql_select.cc: merge 5.0->5.1 of the fix for bug 30377
242 lines
7.2 KiB
Text
242 lines
7.2 KiB
Text
# This test requires that --log-output includes 'table', and the general
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# log is on
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# embedded server causes different stat
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-- source include/not_embedded.inc
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# PS causes different statistics
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--disable_ps_protocol
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connect (con1,localhost,root,,);
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connect (con2,localhost,root,,);
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flush status;
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# Logging to the general query log table (--log-output=table --log) increments
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# Table_locks_immediate with each query, so here Immediate becomes 1
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show status like 'Table_lock%';
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# ++Immediate = 2
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select * from information_schema.session_status where variable_name like 'Table_lock%';
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connection con1;
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# ++Immediate = 3
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SET SQL_LOG_BIN=0;
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--disable_warnings
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# ++Immediate = 4
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drop table if exists t1;
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--enable_warnings
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# ++Immediate = 5
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create table t1(n int) engine=myisam;
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# Immediate + 2 = 7
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insert into t1 values(1);
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connection con2;
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# Immediate + 2 = 9
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lock tables t1 read;
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# ++Immediate = 10
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unlock tables;
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# Immediate + 2 = 12
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lock tables t1 read;
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connection con1;
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# ++Immediate = 13
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let $ID= `select connection_id()`;
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# ++Immediate = 14 (Not +2, because this increments Table_locks_waited)
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--send
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update t1 set n = 3;
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connection con2;
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# wait for the other query to start executing
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let $wait_condition= select 1 from INFORMATION_SCHEMA.PROCESSLIST where ID = $ID and STATE = "Locked";
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# Immediate = 14 + $wait_condition_reps ($wait_timeout is 0, so no extra select
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# is done inside wait_condition.inc)
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--source include/wait_condition.inc
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# ++Immediate = 15 + $wait_condition_reps
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unlock tables;
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connection con1;
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reap;
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# ++Immediate = 16 + $wait_condition_reps
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show status like 'Table_locks_waited';
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drop table t1;
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disconnect con2;
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disconnect con1;
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connection default;
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# End of 4.1 tests
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#
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# last_query_cost
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#
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select 1;
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show status like 'last_query_cost';
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create table t1 (a int);
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insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
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insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
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insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
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insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
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insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
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select * from t1 where a=6;
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show status like 'last_query_cost';
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# Ensure value dosn't change by second status call
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show status like 'last_query_cost';
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select 1;
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show status like 'last_query_cost';
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drop table t1;
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#
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# Test for Bug #15933 max_used_connections is wrong after FLUSH STATUS
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# if connections are cached
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#
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#
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# The first suggested fix from the bug report was chosen
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# (see http://bugs.mysql.com/bug.php?id=15933):
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#
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# a) On flushing the status, set max_used_connections to
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# threads_connected, not to 0.
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#
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# b) Check if it is necessary to increment max_used_connections when
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# taking a thread from the cache as well as when creating new threads
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#
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# Wait for at most $disconnect_timeout seconds for disconnects to finish.
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let $disconnect_timeout = 10;
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# Wait for any previous disconnects to finish.
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FLUSH STATUS;
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--disable_query_log
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--disable_result_log
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eval SET @wait_left = $disconnect_timeout;
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let $max_used_connections = `SHOW STATUS LIKE 'max_used_connections'`;
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eval SET @max_used_connections = SUBSTRING('$max_used_connections', 21)+0;
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let $wait_more = `SELECT @max_used_connections != 1 && @wait_left > 0`;
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while ($wait_more)
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{
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sleep 1;
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FLUSH STATUS;
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SET @wait_left = @wait_left - 1;
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let $max_used_connections = `SHOW STATUS LIKE 'max_used_connections'`;
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eval SET @max_used_connections = SUBSTRING('$max_used_connections', 21)+0;
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let $wait_more = `SELECT @max_used_connections != 1 && @wait_left > 0`;
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}
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--enable_query_log
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--enable_result_log
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# Prerequisite.
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SHOW STATUS LIKE 'max_used_connections';
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SELECT * FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME LIKE 'max_used_connections';
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# Save original setting.
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SET @save_thread_cache_size=@@thread_cache_size;
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SET GLOBAL thread_cache_size=3;
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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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disconnect con2;
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# Check that max_used_connections still reflects maximum value.
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SHOW STATUS LIKE 'max_used_connections';
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SELECT * FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME LIKE 'max_used_connections';
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# Check that after flush max_used_connections equals to current number
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# of connections. First wait for previous disconnect to finish.
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FLUSH STATUS;
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--disable_query_log
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--disable_result_log
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eval SET @wait_left = $disconnect_timeout;
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let $max_used_connections = `SHOW STATUS LIKE 'max_used_connections'`;
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eval SET @max_used_connections = SUBSTRING('$max_used_connections', 21)+0;
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let $wait_more = `SELECT @max_used_connections != 2 && @wait_left > 0`;
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while ($wait_more)
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{
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sleep 1;
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FLUSH STATUS;
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SET @wait_left = @wait_left - 1;
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let $max_used_connections = `SHOW STATUS LIKE 'max_used_connections'`;
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eval SET @max_used_connections = SUBSTRING('$max_used_connections', 21)+0;
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let $wait_more = `SELECT @max_used_connections != 2 && @wait_left > 0`;
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}
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--enable_query_log
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--enable_result_log
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# Check that we don't count disconnected thread any longer.
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SHOW STATUS LIKE 'max_used_connections';
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SELECT * FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME LIKE 'max_used_connections';
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# Check that max_used_connections is updated when cached thread is
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# reused...
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connect (con2,localhost,root,,);
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SHOW STATUS LIKE 'max_used_connections';
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SELECT * FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME LIKE 'max_used_connections';
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# ...and when new thread is created.
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connect (con3,localhost,root,,);
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SHOW STATUS LIKE 'max_used_connections';
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SELECT * FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME LIKE 'max_used_connections';
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# Restore original setting.
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connection default;
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SET GLOBAL thread_cache_size=@save_thread_cache_size;
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disconnect con3;
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disconnect con2;
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disconnect con1;
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#
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# Bug #30377: EXPLAIN loses last_query_cost when used with UNION
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#
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CREATE TABLE t1 ( a INT );
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INSERT INTO t1 VALUES (1), (2);
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SELECT a FROM t1 LIMIT 1;
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SHOW SESSION STATUS LIKE 'Last_query_cost';
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EXPLAIN SELECT a FROM t1;
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SHOW SESSION STATUS LIKE 'Last_query_cost';
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SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
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SHOW SESSION STATUS LIKE 'Last_query_cost';
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EXPLAIN SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
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SHOW SESSION STATUS LIKE 'Last_query_cost';
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SELECT a IN (SELECT a FROM t1) FROM t1 LIMIT 1;
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SHOW SESSION STATUS LIKE 'Last_query_cost';
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SELECT (SELECT a FROM t1 LIMIT 1) x FROM t1 LIMIT 1;
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SHOW SESSION STATUS LIKE 'Last_query_cost';
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SELECT * FROM t1 a, t1 b LIMIT 1;
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SHOW SESSION STATUS LIKE 'Last_query_cost';
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DROP TABLE t1;
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# End of 5.0 tests
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#
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# Ensure that SHOW STATUS only changes global status variables
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#
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connect (con1,localhost,root,,);
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let $rnd_next = `show global status like 'handler_read_rnd_next'`;
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let $tmp_table = `show global status like 'Created_tmp_tables'`;
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show status like 'com_show_status';
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show status like 'hand%write%';
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show status like '%tmp%';
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show status like 'hand%write%';
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show status like '%tmp%';
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show status like 'com_show_status';
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let $rnd_next2 = `show global status like 'handler_read_rnd_next'`;
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let $tmp_table2 = `show global status like 'Created_tmp_tables'`;
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--disable_query_log
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eval select substring_index('$rnd_next2',0x9,-1)-substring_index('$rnd_next',0x9,-1) as rnd_diff, substring_index('$tmp_table2',0x9,-1)-substring_index('$tmp_table',0x9,-1) as tmp_table_diff;
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--enable_query_log
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# End of 5.1 tests
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