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Dir : ~/www/server/mysql/mysql-test/suite/innodb_undo/t/

View File Name : truncate.test

#
# WL#6965: Truncate UNDO logs.
#

--source include/have_innodb_max_16k.inc
--source include/have_undo_tablespaces.inc

# The test is restarting the server to force undo truncation.
--source include/not_embedded.inc
--source include/big_test.inc


--let $restart_parameters="restart: --innodb_undo_tablespaces=2 --innodb_rollback_segments=35"
--source include/restart_mysqld.inc

################################################################################
# Test-case will test following scenarios.
#
# 1. Perform enough DML action so that undo tablespace size grows beyond
#    set threshold and then wait and see if it is being truncated.
#
################################################################################

#-----------------------------------------------------------------------------
#
# create test-bed
#
let MYSQLD_DATADIR = `select @@datadir`;

#-----------------------------------------------------------------------------
#
# 1. Perform enough DML action so that undo tablespace size grows beyond
#    set threshold and then wait and see if it is being truncated.
#
create table t1
        (keyc int, c1 char(100), c2 char(100),
         primary key(keyc)) engine = innodb;
delimiter |;
CREATE PROCEDURE populate_t1()
BEGIN
        DECLARE i INT DEFAULT 1;
        while (i <= 40000) DO
                insert into t1 values (i, 'a', 'b');
                SET i = i + 1;
        END WHILE;
END |
delimiter ;|
begin;
call populate_t1();
delete from t1 where keyc < 20000;
update t1 set c1 = 'mysql' where  keyc > 20000;
update t1 set c2 = 'oracle' where  keyc > 20000;
#
commit;
drop table t1;
drop PROCEDURE populate_t1;

let CHECKFILE = $MYSQLTEST_VARDIR/log/check.txt;

perl;
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size1)
	= stat("$ENV{MYSQLD_DATADIR}/undo001");
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size2)
	= stat("$ENV{MYSQLD_DATADIR}/undo002");
open(OUT, ">$ENV{CHECKFILE}") || die;
print OUT "let \$size1='$size1,$size2';\n";
close(OUT);
EOF
SET GLOBAL innodb_fast_shutdown=0;
--source include/shutdown_mysqld.inc
--source $CHECKFILE
perl;
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size1)
	= stat("$ENV{MYSQLD_DATADIR}/undo001");
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size2)
	= stat("$ENV{MYSQLD_DATADIR}/undo002");
open(OUT, ">$ENV{CHECKFILE}") || die;
print OUT "let \$size2='$size1,$size2';\n";
close(OUT);
EOF

--source $CHECKFILE

if ($size1 == $size2)
{
   echo Truncation did not happen: $size1 == $size2;
}

--let $restart_parameters=
--source include/start_mysqld.inc