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Apply InnoDB snapshot innodb-5.1-ss2637, part 3. Fixes

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Bug #39483: InnoDB hang on adaptive hash because of out of order ::open() call by MySQL


Detailed revision comments:

r2630 | inaam | 2008-09-16 19:11:26 +0300 (Tue, 16 Sep 2008) | 11 lines
branches/5.1   bug#39483 InnoDB hang on adaptive hash because of out
of order ::open() call by MySQL

Forward port of r2629

Under some conditions MySQL calls ::open with search_latch leading
to a deadlock as we try to acquire dict_sys->mutex inside ::open
breaking the latching order. The fix is to release search_latch.

Reviewed by: Heikki
This commit is contained in:
Timothy Smith 2008-12-14 12:31:26 -07:00
parent fef8e27a79
commit bc896a54c8
1 changed files with 8 additions and 0 deletions
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8
storage/innobase/handler/ha_innodb.cc
View file

@ -2298,6 +2298,14 @@ ha_innobase::open(
UT_NOT_USED(test_if_locked);
thd = ha_thd();
/* Under some cases MySQL seems to call this function while
holding btr_search_latch. This breaks the latching order as
we acquire dict_sys->mutex below and leads to a deadlock. */
if (thd != NULL) {
innobase_release_temporary_latches(ht, thd);
}
normalize_table_name(norm_name, name);
user_thd = NULL;