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ChangeSet@stripped, 2008-01-30 19:00:20-07:00, tsmith@stripped +1 -0
Bug #32149 Long semaphore wait for adaptive hash latch
Fix by calling ha_release_temporary_latches() before ::filesort().
sql/filesort.cc@stripped, 2008-01-30 19:00:19-07:00, tsmith@stripped +7 -0
Call ha_release_temporary_latches() before performing
a (possibly long) ::filesort().
diff -Nrup a/sql/filesort.cc b/sql/filesort.cc
--- a/sql/filesort.cc 2008-01-10 08:52:24 -07:00
+++ b/sql/filesort.cc 2008-01-30 19:00:19 -07:00
@@ -112,6 +112,13 @@ ha_rows filesort(THD *thd, TABLE *table,
TABLE_LIST *tab= table->pos_in_table_list;
Item_subselect *subselect= tab ? tab->containing_subselect() : 0;
+ Release InnoDB's adaptive hash index latch (if holding) before
+ running a sort.
Don't use table->sort in filesort as it is also used by
QUICK_INDEX_MERGE_SELECT. Work with a copy and put it back at the end
|• bk commit into 5.0 tree (tsmith:1.2570) BUG#32149||tim||31 Jan|