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MDEV-12827 Assertion failure when reporting duplicate key error in online table rebuild

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row_log_table_apply_insert_low(), row_log_table_apply_update():
When reporting the error_key_num, only count the clustered index
if it corresponds to a key in the SQL layer.

The assertion failure was probably introduced by the (incomplete)
MySQL 5.6.28 bug fix
Bug #21364096 THE BOGUS DUPLICATE KEY ERROR IN ONLINE DDL
WITH INCORRECT KEY NAME
which we are improving.

Side note: the fix was incorrectly merged to MySQL 5.7.10;
incorrect key names will continue to be reported in MySQL 5.7.
This commit is contained in:
Marko Mäkelä
2017-12-21 17:19:13 +02:00
parent 042f763268
commit 0202e47274
4 changed files with 92 additions and 38 deletions
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22
mysql-test/suite/innodb/r/innodb-index-debug.result
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@ -67,3 +67,25 @@ alter table t1 force, algorithm=inplace;
ERROR HY000: Out of memory; check if mysqld or some other process uses all available memory; if not, you may have to use 'ulimit' to allow mysqld to use more memory or you can add more swap space
SET DEBUG_DBUG = @saved_debug_dbug;
drop table t1, t480;
#
# MDEV-12827 Assertion failure when reporting duplicate key error
# in online table rebuild
#
CREATE TABLE t1 (j INT UNIQUE, i INT UNIQUE) ENGINE=InnoDB;
SET DEBUG_SYNC='row_log_table_apply1_before SIGNAL built WAIT_FOR log';
ALTER TABLE t1 DROP j, FORCE;
SET DEBUG_SYNC='now WAIT_FOR built';
INSERT INTO t1 (i) VALUES (0),(0);
ERROR 23000: Duplicate entry '0' for key 'i'
SET DEBUG_SYNC='now SIGNAL log';
ERROR 23000: Duplicate entry '0' for key 'i'
SET DEBUG_SYNC='row_log_table_apply1_before SIGNAL built2 WAIT_FOR log2';
ALTER TABLE t1 DROP j, FORCE;
SET DEBUG_SYNC='now WAIT_FOR built2';
INSERT INTO t1 (i) VALUES (0),(1);
UPDATE t1 SET i=0;
ERROR 23000: Duplicate entry '0' for key 'i'
SET DEBUG_SYNC='now SIGNAL log2';
ERROR 23000: Duplicate entry '0' for key 'i'
SET DEBUG_SYNC='RESET';
DROP TABLE t1;