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Bug#13832772 ASSERTION `THD->IS_ERROR() || KILL_ERRNO'

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We are trying to sort a lot of text/blob fields, 
so the buffer is indeed too small.
Memory available = thd->variables.sortbuff_size = 262144
min_sort_memory = param.sort_length*MERGEBUFF2 = 292245
So the decision to abort the query is correct.

filesort() calls my_error(), the error is reported.
But, since we have DELETE IGNORE ... the error is converted to a warning by
THD::raise_condition

filesort currently expects an error to be recorded in the THD diagnostics
area.
If we lift this restriction (remove the assert) we end up in the familiar
void Protocol::end_statement()
  default:
    DBUG_ASSERT(0);

The solution seems to be to call my_error(ME_FATALERROR) in filesort,
so that the error is propagated as an error rather than a warning.


mysql-test/r/filesort_debug.result:
  New test case.
mysql-test/t/filesort_debug.test:
  New test case.
This commit is contained in:
Tor Didriksen
2012-03-14 12:28:41 +01:00
parent 8f9f40aa1b
commit a930e4745e
3 changed files with 89 additions and 1 deletions
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44
mysql-test/r/filesort_debug.result
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@ -31,3 +31,47 @@ SET DEBUG_SYNC='now SIGNAL filesort_killed';
# connection default
SET DEBUG_SYNC= "RESET";
DROP TABLE t1;
#
# Bug#13832772 ASSERTION `THD->IS_ERROR() || KILL_ERRNO'
# FAILED IN FILESORT/MYSQL_DELETE
#
CREATE TABLE t1 (
c1 BLOB,
c2 TEXT,
c3 TEXT,
c4 TEXT,
c5 TEXT,
c6 TEXT,
c7 TEXT,
c8 BLOB,
c9 TEXT,
c19 TEXT,
pk INT,
c20 TEXT,
c21 BLOB,
c22 TEXT,
c23 TEXT,
c24 TEXT,
c25 TEXT,
c26 BLOB,
c27 TEXT,
c28 TEXT,
primary key (pk)
) ENGINE=InnoDB
;
CALL mtr.add_suppression("Out of sort memory");
DELETE IGNORE FROM t1 ORDER BY c26,c7,c23,c4,c25,c5,c20,
c19,c21,c8,c1,c27,c28,c3,c9,c22,c24,c6,c2,pk LIMIT 2;
ERROR HY001: Out of sort memory, consider increasing server sort buffer size
SHOW WARNINGS;
Level Code Message
Error 1038 Out of sort memory, consider increasing server sort buffer size
Error 1028 Sort aborted: Out of sort memory, consider increasing server sort buffer size
DELETE FROM t1 ORDER BY c26,c7,c23,c4,c25,c5,c20,
c19,c21,c8,c1,c27,c28,c3,c9,c22,c24,c6,c2,pk LIMIT 2;
ERROR HY001: Out of sort memory, consider increasing server sort buffer size
SHOW WARNINGS;
Level Code Message
Error 1038 Out of sort memory, consider increasing server sort buffer size
Error 1028 Sort aborted: Out of sort memory, consider increasing server sort buffer size
DROP TABLE t1;