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ChangeSet@stripped, 2007-05-29 15:53:03+03:00, aelkin@stripped +1 -0
Bug#27044 replicated with unique field ndb table allows duplkey inserts
The bug in that slave version of a table with unique field still was
able to execute INSERT query as replace whereas it's impossible on master.
The reason of this artifact is wrong usage of ndb->extra:s.
Fixed with resetting flags at do_after.
There is open issue with symmetrical resetting
table->file->extra(HA_EXTRA_NO_IGNORE_NO_KEY)
which i had to hand to bug#27077.
The test for the current bug was committed in a cset for bug#27320.
sql/log_event.cc@stripped, 2007-05-29 15:53:01+03:00, aelkin@stripped +31 -7
fixing do_after_row_operation to reset the effect of the extra engine's
flags set at do_before;
comments on meaning of extra flags added;
execution of table->file->ha_end_bulk_insert() in do_after is not dependant on error;
# This is a BitKeeper patch. What follows are the unified diffs for the
# set of deltas contained in the patch. The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User: aelkin
# Host: dsl-hkibras1-ff5dc300-70.dhcp.inet.fi
# Root: /home/elkin/MySQL/TEAM/FIXES/5.1/bug27044_slave_dup2unique
--- 1.273/sql/log_event.cc 2007-03-01 16:16:13 +02:00
+++ 1.274/sql/log_event.cc 2007-05-29 15:53:01 +03:00
@@ -6601,10 +6601,23 @@ int Write_rows_log_event::do_before_row_
lex->duplicates flag.
*/
thd->lex->sql_command= SQLCOM_REPLACE;
-
- table->file->extra(HA_EXTRA_IGNORE_DUP_KEY); // Needed for ndbcluster
- table->file->extra(HA_EXTRA_WRITE_CAN_REPLACE); // Needed for ndbcluster
- table->file->extra(HA_EXTRA_IGNORE_NO_KEY); // Needed for ndbcluster
+ /*
+ Do not raise the error flag in case of hitting to an unique attribute
+ */
+ table->file->extra(HA_EXTRA_IGNORE_DUP_KEY);
+ /*
+ NDB specific: update from ndb master wrapped as Write_rows
+ */
+ /*
+ so that the event should be applied to replace slave's row
+ */
+ table->file->extra(HA_EXTRA_WRITE_CAN_REPLACE);
+ /*
+ NDB specific: if update from ndb master wrapped as Write_rows
+ does not find the row it's assumed idempotent binlog applying
+ is taking place; don't raise the error.
+ */
+ table->file->extra(HA_EXTRA_IGNORE_NO_KEY);
/*
TODO: the cluster team (Tomas?) says that it's better if the engine knows
how many rows are going to be inserted, then it can allocate needed memory
@@ -6632,9 +6645,20 @@ int Write_rows_log_event::do_before_row_
int Write_rows_log_event::do_after_row_operations(TABLE *table, int error)
{
- if (error == 0)
- error= table->file->ha_end_bulk_insert();
- return error;
+ int local_error= 0;
+ table->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY);
+ table->file->extra(HA_EXTRA_WRITE_CANNOT_REPLACE);
+ /*
+ reseting the extra with
+ table->file->extra(HA_EXTRA_NO_IGNORE_NO_KEY);
+ fires bug#27077
+ todo: explain or fix
+ */
+ if (local_error= table->file->ha_end_bulk_insert())
+ {
+ table->file->print_error(local_error, MYF(0));
+ }
+ return error? error : local_error;
}
int Write_rows_log_event::do_prepare_row(THD *thd, RELAY_LOG_INFO *rli,
Thread |
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• bk commit into 5.1 tree (aelkin:1.2472) BUG#27044 | Andrei Elkin | 29 May |