database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-12-24 11:21:21 +03:00
Code Activity

Bug #32149 Long semaphore wait for adaptive hash latch

Browse Source 
Fix by calling ha_release_temporary_latches() before ::filesort().


sql/filesort.cc:
  Call ha_release_temporary_latches() before performing
  a (possibly long) ::filesort().
This commit is contained in:
unknown
2008-01-30 19:00:20 -07:00
parent 359b2cedb4
commit a3f80f54b4
1 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
sql/filesort.cc
View File

@@ -112,6 +112,13 @@ ha_rows filesort(THD *thd, TABLE *table, SORT_FIELD *sortorder, uint s_length,
FILESORT_INFO table_sort;
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.
*/
ha_release_temporary_latches(thd);
/*
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