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BUG#35478: sort_union() returns bad data when sort_buffer_size is hit

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- In QUICK_INDEX_MERGE_SELECT::read_keys_and_merge: when we got table->sort from Unique,
  tell init_read_record() not to use rr_from_cache() because a) rowids are already sorted
  and b) it might be that the the data is used by filesort(), which will need record rowids
  (which rr_from_cache() cannot provide).
- Fully de-initialize the table->sort read in QUICK_INDEX_MERGE_SELECT::get_next(). This fixes BUG#35477.
(bk trigger: file as fix for BUG#35478).

sql/filesort.cc:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - make find_all_keys() use quick->get_next() instead of init_read_record(r)/r.read_record() calls
  - added dbug printout
sql/mysql_priv.h:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - Added parameter to init_read_record
sql/opt_range.cc:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - In QUICK_INDEX_MERGE_SELECT::read_keys_and_merge: when we got table->sort from Unique,
    tell init_read_record() not to use rr_from_cache() because a) rowids are already sorted
    and b) it might be that the the data is used by filesort(), which will need record rowids
    (which rr_from_cache() cannot provide).
  - Fully de-initialize the table->sort read in QUICK_INDEX_MERGE_SELECT::get_next().
sql/records.cc:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - Added disable_rr_cache parameter to init_read_record
  - Added comment
sql/sql_acl.cc:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - Added parameter to init_read_record
sql/sql_delete.cc:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - Added parameter to init_read_record
sql/sql_help.cc:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - Added parameter to init_read_record
sql/sql_select.cc:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - Added parameter to init_read_record
sql/sql_table.cc:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - Added parameter to init_read_record
sql/sql_udf.cc:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - Added parameter to init_read_record
sql/sql_update.cc:
  BUG#35478: sort_union() returns bad data when sort_buffer_size is hit
  - Added parameter to init_read_record
This commit is contained in:
Sergey Petrunia
2008-07-15 18:13:21 +04:00
parent d5077086f7
commit 62513bb1bc
11 changed files with 120 additions and 37 deletions
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4
sql/sql_delete.cc
View File

@@ -214,7 +214,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
DBUG_RETURN(TRUE);
}
if (usable_index==MAX_KEY)
init_read_record(&info,thd,table,select,1,1);
init_read_record(&info, thd, table, select, 1, 1, FALSE);
else
init_read_record_idx(&info, thd, table, 1, usable_index);
@@ -772,7 +772,7 @@ int multi_delete::do_deletes()
}
READ_RECORD info;
init_read_record(&info,thd,table,NULL,0,1);
init_read_record(&info, thd, table, NULL, 0, 1, FALSE);
/*
Ignore any rows not found in reference tables as they may already have
been deleted by foreign key handling