Commit c74959c9 authored by tsmith@ramayana.hindu.god's avatar tsmith@ramayana.hindu.god
Browse files

Bug #32149 Long semaphore wait for adaptive hash latch 

Fix by calling ha_release_temporary_latches() before ::filesort().
parent 3c5ca383

sql/filesort.cc

+7 −0
Original line number Diff line number Diff line
@@ -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