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Applying patch from SergeyV

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Fixes bug#17264, for alter table on win32 for successfull operation completion
it is used TL_WRITE(=10) lock instead of TL_WRITE_ALLOW_READ(=6), however here
in innodb handler TL_WRTIE is lifted to TL_WRITE_ALLOW_WRITE, which causes
race condition when several clients do alter table simultaneously.


mysql-test/r/lock_multi.result:
  Test case for bug#17264.
mysql-test/t/lock_multi.test:
  Test case for bug#17264
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2006-06-20 13:43:13 -04:00
parent 70a087e53d
commit b250722087
3 changed files with 43 additions and 0 deletions
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6
mysql-test/r/lock_multi.result
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@@ -67,3 +67,9 @@ Select_priv
N
use test;
use test;
create table t1 (f1 int(12) unsigned not null auto_increment, primary key(f1)) engine=innodb;
lock tables t1 write;
alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; //
alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; //
unlock tables;
drop table t1;