Conflicts:
  - sql/ha_partition.cc
  - sql/sql_partition.cc

The following tests started to fail:
  - main.partition_innodb (a crash)

Conflicts:
  - sql/event_data_objects.cc
  - sql/events.cc
  - sql/mysql_priv.h
  - sql/repl_failsafe.cc
  - sql/sql_parse.cc
  - sql/sql_show.cc
  - sql/sql_view.cc
  - sql/table.cc

=========================================================
revision-id: joro@sun.com-20100118155046-v6hvlyfmitcyep8p
committer: Georgi Kodinov <joro@sun.com>
branch nick: B45989-5.1-bugteam
timestamp: Mon 2010-01-18 17:50:46 +0200
message:
  Bug #45989 take 2 : memory leak after explain encounters an
  error in the query.
  
  Fixes a leak after materializing a GROUP BY subquery to a 
  temp table when the subquery has a blob column in the SELECT
  list.
  Fixed by correctly destructing temporary buffers after doing
  the conversion.
=========================================================

Conflicts:
  - sql/sql_partition.cc

Resetting the master before stopping the slave was generating the message
"[ERROR] Slave I/O: Got fatal error 1236 from master when reading data from
binary log: 'could not find next log', Error_code: 1236". In consequence,
the test case was failing because the message had not been suppressed.

To circumvent the failure, we rewrote the test stopping the slave before
resetting the master. We prefer this alternative rather than suppressing
the message.

in errmsg.txt. Kept the one in that matched the location
in errmsg-utf8.txt, ie after ER_UNKNOWN_LOCALE.

Conflicts:
  - configure.in
  - include/m_string.h
  - mysql-test/extra/rpl_tests/rpl_row_func003.test
  - mysql-test/r/mysqlbinlog.result
  - mysql-test/r/union.result
  - mysql-test/suite/binlog/r/binlog_killed_simulate.result
  - mysql-test/suite/binlog/r/binlog_row_mix_innodb_myisam.result
  - mysql-test/suite/binlog/r/binlog_unsafe.result
  - mysql-test/suite/binlog/t/binlog_unsafe.test
  - mysql-test/suite/rpl/r/rpl_loaddata_fatal.result
  - mysql-test/suite/rpl/r/rpl_loaddata_map.result
  - mysql-test/suite/rpl/r/rpl_stm_loaddata_concurrent.result
  - mysql-test/suite/rpl/r/rpl_stm_log.result
  - mysql-test/suite/rpl/t/rpl_optimize.test
  - mysql-test/t/mysqlbinlog.test
  - mysql-test/t/union.test
  - sql/rpl_utility.h
  - sql/sql_union.cc
  - strings/Makefile.am

added check_length optimization for I_S_NAME comparison

PB2 run uncovered issue that needs further analysis.

Conflicts:
  - sql/sql_plugin.cc

Conflicts:
  - support-files/mysql.spec.sh

           REORGANIZE PARTITION

There were several problems which lead to this this,
all related to bad error handling.

1) There was several bugs preventing the ddl-log to be used for
   cleaning up created files on error.

2) The error handling after the copy partition rows did not close
   and unlock the tables, resulting in deletion of partitions
   which were in use, which lead InnoDB to put the partition to
   drop in a background queue.

error in the query.

Fixes a leak after materializing a GROUP BY subquery to a 
temp table when the subquery has a blob column in the SELECT
list.
Fixed by correctly destructing temporary buffers after doing
the conversion.

for regular PB builds.

'CREATE TABLE IF NOT EXISTS ... SELECT' statement were causing 'CREATE
TEMPORARY TABLE ...' to be written to the binary log in row-based 
mode (a.k.a. RBR), when there was a temporary table with the same name.
Because the 'CREATE TABLE ... SELECT' statement was executed as 
'INSERT ... SELECT' into the temporary table. Since in RBR mode no 
other statements related to temporary tables are written into binary log,
this sometimes broke replication.

This patch changes behavior of 'CREATE TABLE [IF NOT EXISTS] ... SELECT ...'.
it ignores existence of temporary table with the 
same name as table being created and is interpreted
as attempt to create/insert into base table. This makes behavior of
'CREATE TABLE [IF NOT EXISTS] ... SELECT' consistent with
how ordinary 'CREATE TABLE' and 'CREATE TABLE ... LIKE' behave.

The optimizer must not continue executing the current query
if e.g. the storage engine reports an error.
This is somewhat hard to implement with Item::val_xxx()
because they do not have means to return error code.
This is why we need to check the thread's error state after
a call to one of the Item::val_xxx() methods.

Fixed store_key_item::copy_inner() to return an error state 
if an error happened during the call to Item::save_in_field() 
because it calls Item::val_xxx().
Also added similar checks to related places.