database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-01 03:47:19 +03:00
Code Activity

Fix for BUG#25507 "multi-row insert delayed + auto increment causes

Browse Source 
duplicate key entries on slave" (two concurrrent connections doing
multi-row INSERT DELAYED to insert into an auto_increment column,
caused replication slave to stop with "duplicate key error" (and
binlog was wrong)), and BUG#26116 "If multi-row INSERT
DELAYED has errors, statement-based binlogging breaks" (the binlog
was not accounting for all rows inserted, or slave could stop).
The fix is that: if (statement-based) binlogging is on, a multi-row
INSERT DELAYED is silently converted to a non-delayed INSERT.
Note: it is not possible to test BUG#25507 in 5.0 (requires mysqlslap),
so it is tested only in the changeset for 5.1. However, BUG#26116
is tested here, and the fix for BUG#25507 is the same code change.


mysql-test/r/innodb-replace.result:
  result update
mysql-test/t/innodb-replace.test:
  now that multi-row delayed inserts are converted to normal inserts
  if the statement-based binlog is enabled,
  no error is issued even if this engine does not support INSERT DELAYED,
  as the insert does not go through the INSERT DELAYED code.
  To preserve the goal of this test, we change the statements to single-
  row inserts.
sql/sql_insert.cc:
  A multi-row INSERT DELAYED cannot be recorded to a statement-based
  binlog in a way that describes the insertions actually done;
  in that case we fallback to a non-delayed INSERT.
mysql-test/r/rpl_insert_delayed.result:
  result. Master and slave match.
mysql-test/t/rpl_insert_delayed.test:
  Test for BUG#26116 (see if one error at first row on master makes the
  slave's data incorrect, see if one error at second row on master
  makes slave stop).
This commit is contained in:
unknown
2007-02-15 15:39:03 +01:00
parent f40fe80760
commit f6834c02ca
5 changed files with 123 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
sql/sql_insert.cc
View File

@ -356,6 +356,27 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
(duplic == DUP_UPDATE))
lock_type=TL_WRITE;
#endif
if ((lock_type == TL_WRITE_DELAYED) &&
log_on && mysql_bin_log.is_open() &&
(values_list.elements > 1))
{
/*
Statement-based binary logging does not work in this case, because:
a) two concurrent statements may have their rows intermixed in the
queue, leading to autoincrement replication problems on slave (because
the values generated used for one statement don't depend only on the
value generated for the first row of this statement, so are not
replicable)
b) if first row of the statement has an error the full statement is
not binlogged, while next rows of the statement may be inserted.
c) if first row succeeds, statement is binlogged immediately with a
zero error code (i.e. "no error"), if then second row fails, query
will fail on slave too and slave will stop (wrongly believing that the
master got no error).
So we fallback to non-delayed INSERT.
*/
lock_type= TL_WRITE;
}
table_list->lock_type= lock_type;
#ifndef EMBEDDED_LIBRARY