Hi!
> "Kristian" == Kristian Nielsen writes:
Kristian> There is another test failure visible in Buildbot:
Kristian>
https://askmonty.org/buildbot/builders/gentoo-x86-dbg/builds/13/steps/test/logs/stdio
Kristian>
---
Kristian> main.show_check [ fail ]
Kristian> Test ended at 2009-05-22 11:47:11
Kristian> CURRENT_TEST: main.show_check
Kristian> ---
/home/buildbot/maria-slave/psergey-foxhole-x86/build/mysql-test/r/show_check.result
2009-05-22 09:56:56.0 +0300
Kristian> +++
/home/buildbot/maria-slave/psergey-foxhole-x86/build/mysql-test/r/show_check.reject
2009-05-22 10:47:11.0 +0300
Kristian> @@ -252,13 +252,13 @@
Kristian> flush tables;
Kristian> show open tables;
Kristian> Database Table In_use Name_locked
Kristian> -mysqlgeneral_log 0 0
Kristian> +mysqlgeneral_log 1 0
Kristian> create table t1(n int);
Kristian> insert into t1 values (1);
Kristian> show open tables;
Kristian> Database Table In_use Name_locked
Kristian> -test t1 0 0
Kristian> mysqlgeneral_log 0 0
Kristian> +test t1 0 0
Kristian> drop table t1;
Kristian> create table t1 (a int not null, b VARCHAR(10), INDEX (b) )
AVG_ROW_LENGTH=10 CHECKSUM=1 COMMENT="test" ENGINE=MYISAM MIN_ROWS=10
MAX_ROWS=100 PACK_KEYS=1 DELAY_KEY_WRITE=1 ROW_FORMAT=fixed;
Kristian> show create table t1;
Kristian> As can be seen, it is a random failure.
Kristian> Would be really great if someone could take a look and fix this.
first problem:
Have no clue how the general_log could say its in use.
This comes from table->in_use, which should be 0 if the table
is not in use by another thread.
I spend some time looking at this, and in_use should be reset by
previous statement in close_thread_tables().
If this happens again, we should file a bug report to MySQL; If they
are not fixing this, I will take a look.
Second problem:
Don't know if it's defined in which order the tables are in 'show open
table' so the second test is bogus. (In theory it should be a defined
order based on hash values, but apparently it isn't)
I think we should change the code to use:
show open tables from test
Which should fix it.
I noticed that in 5.1 they have 'fixed' this by removing a lot of
SHOW OPEN TABLES test, which I think is the wrong fix. What they should have
instead done would be to add a --sort-result line to mysqltest.c
Regards,
Monty
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