> ------------------------------------------------------------
> revno: 2818.4.1
> revision-id: alexey.kopytov@sun.com-20091030155453-0vlfwki805h9os62
> parent: joerg@mysql.com-20091016122941-rf6z0keqvmlgjfto
> committer: Alexey Kopytov <Alexey.Kopytov@Sun.com>
> branch nick: my50-bug48131
> timestamp: Fri 2009-10-30 18:54:53 +0300
> message:
>   Bug #48131: crash group by with rollup, distinct, filesort,
>               with temporary tables
>   
>   There were two problems the test case from this bug was
>   triggering:
>   
>   1. JOIN::rollup_init() was supposed to wrap all constant Items
>   into another object for queries with the WITH ROLLUP modifier
>   to ensure they are never considered as constants and therefore
>   are written into temporary tables if the optimizer chooses to
>   employ them for DISTINCT/GROUP BY handling.
>   
>   However, JOIN::rollup_init() was called before
>   make_join_statistics(), so Items corresponding to fields in
>   const tables could not be handled as intended, which was
>   causing all kinds of problems later in the query execution. In
>   particular, create_tmp_table() assumed all constant items
>   except "hidden" ones to be removed earlier by remove_const()
>   which led to improperly initialized Field objects for the
>   temporary table being created. This is what was causing crashes
>   and valgrind errors in storage engines.
>   
>   2. Even when the above problem had been fixed, the query from
>   the test case produced incorrect results due to some
>   DISTINCT/GROUP BY optimizations being performed by the
>   optimizer that are inapplicable in the WITH ROLLUP case.
>   
>   Fixed by disabling inapplicable DISTINCT/GROUP BY optimizations
>   when the WITH ROLLUP modifier is present, and splitting the
>   const-wrapping part of JOIN::rollup_init() into a separate
>   method which is now invoked after make_join_statistics() when
>   the const tables are already known.

> ------------------------------------------------------------
> revno: 2818.1.13
> revision-id: joro@sun.com-20091030131543-2b23fnqckgbzvete
> parent: joro@sun.com-20091030094044-quadg0bwjy7cwqzw
> committer: Georgi Kodinov <joro@sun.com>
> branch nick: B48291-5.0-bugteam
> timestamp: Fri 2009-10-30 15:15:43 +0200
> message:
>   Bug #48291 : crash with row() operator,select into @var, and 
>     subquery returning multiple rows
>   
>   Error handling was missing when handling subqueires in WHERE 
>   and when assigning a SELECT result to a @variable.
>   This caused crash(es). 
>   
>   Fixed by adding error handling code to both the WHERE 
>   condition evaluation and to assignment to an @variable.

> ------------------------------------------------------------
> revno: 2818.1.12
> revision-id: joro@sun.com-20091030094044-quadg0bwjy7cwqzw
> parent: joro@sun.com-20091029152429-ks55fhrp4lhknyij
> committer: Georgi Kodinov <joro@sun.com>
> branch nick: B48293-5.0-bugteam
> timestamp: Fri 2009-10-30 11:40:44 +0200
> message:
>   Bug #48293: crash with procedure analyse, view with > 10 columns,
>   having clause...
>   
>   The fix for bug 46184 was not very complete. It was not covering
>   views using temporary tables and multiple tables in a FROM clause.
>   Fixed by reverting the fix for 46184 and making a more general
>   check that is checking at the right execution stage and for all
>   of the non-supported cases.
>   Now PROCEDURE ANALYZE on non-top level SELECT is also forbidden.
>   Updated the analyse.test and subselect.test accordingly.

> ------------------------------------------------------------
> revno: 2818.1.6
> revision-id: joro@sun.com-20091021084345-iki6z0uceieoupey
> parent: ramil@mysql.com-20091023112648-gie6o3odj57cxh1e
> committer: Georgi Kodinov <joro@sun.com>
> branch nick: B47780-5.0-bugteam
> timestamp: Wed 2009-10-21 11:43:45 +0300
> message:
>   Bug #47780: crash when comparing GIS items from subquery
>         
>   If the first argument to GeomFromWKB function is a geometry
>   field then the function just returns its value.
>   However in doing so it's not preserving first argument's 
>   null_value flag and this causes unexpected null value to
>   be returned to the calling function.
>         
>   Fixed by updating the null_value of the GeomFromWKB function
>   in such cases (and all other cases that return a NULL e.g.
>   because of not enough memory for the return buffer).

> ------------------------------------------------------------
> revno: 2818.1.5
> revision-id: ramil@mysql.com-20091023112648-gie6o3odj57cxh1e
> parent: ramil@mysql.com-20091021090408-208mvwwrcroi2j8c
> committer: Ramil Kalimullin <ramil@mysql.com>
> branch nick: b48258-5.0-bugteam
> timestamp: Fri 2009-10-23 16:26:48 +0500
> message:
>   Fix for bug#48258: Assertion failed when using a spatial index
>   
>   Problem: involving a spatial index for "non-spatial" queries
>   (that don't containt MBRXXX() functions) may lead to failed assert.
>   
>   Fix: don't use spatial indexes in such cases.

> ------------------------------------------------------------
> revno: 2818.1.4
> revision-id: ramil@mysql.com-20091021090408-208mvwwrcroi2j8c
> parent: azundris@mysql.com-20091021033856-ydodp4q42o58e7ka
> committer: Ramil Kalimullin <ramil@mysql.com>
> branch nick: b47019-5.0-bugteam
> timestamp: Wed 2009-10-21 14:04:08 +0500
> message:
>   Fix for bug#47019: Assertion failed: 0, file .\rt_mbr.c, 
>   line 138 when forcing a spatial index
>   
>   Problem: "Spatial indexes can be involved in the search 
>   for queries that use a function such as MBRContains() 
>   or MBRWithin() in the WHERE clause".
>   Using spatial indexes for JOINs with =, <=> etc.
>   predicates is incorrect.
>   
>   Fix: disable spatial indexes for such queries.

Put variable declaration at the beginning of a block

                    Removes the need of a hack (the jump to label).

sql/sql_parse.cc:
  DBUG macros are wrapped inside a loop. Allow to break
  the command switch from within a DBUG macro.

On Mac OS X or Windows, sending a SIGHUP to the server or a
asynchronous flush (triggered by flush_time), would cause the
server to crash.

The problem was that a hook used to detach client API handles
wasn't prepared to handle cases where the thread does not have
a associated session.

The solution is to verify whether the thread has a associated
session before trying to detach a handle.

mysql-test/r/federated_debug.result:
  Add test case result for Bug#47525
mysql-test/t/federated_debug-master.opt:
  Debug point.
mysql-test/t/federated_debug.test:
  Add test case for Bug#47525
sql/slave.cc:
  Check whether a the thread has a associated session.
sql/sql_parse.cc:
  Add debug code to simulate a reload without thread session.

Make configure.js bail with an error if trying to build bdb from a bzr
tree.

          'flush tables' crashes

The server crashes when 'show procedure status' and 'flush tables' are
run concurrently.

This is caused by the way mysql.proc table is added twice to the list
of table to lock although the requirements on the current locking API
assumes differently.

No test case is submitted because of the nature of the crash which is 
currently difficult to reproduce in a deterministic way.

This is a backport from 5.1

myisam/mi_dbug.c:
  * check_table_is_closed is only used in EXTRA_DEBUG mode but since it is
  iterating over myisam shared data it still needs to be protected by an
  appropriate mutex.
sql/sql_yacc.yy:
  * Since the I_S mechanism is already handling the open and close of 
  mysql.proc there is no need for the method sp_add_to_query_tables.

The 'BEGIN/COMMIT/ROLLBACK' log event could be filtered out if the
database is not selected by --database option of mysqlbinlog command.
This can result in problem if there are some statements in the
transaction are not filtered out.

To fix the problem, mysqlbinlog will output 'BEGIN/ROLLBACK/COMMIT' 
in regardless of the database filtering rules.

client/mysqlbinlog.cc:
  Skip the database check for BEGIN/COMMIT/ROLLBACK log events.
mysql-test/r/mysqlbinlog.result:
  Test result for bug#46998
mysql-test/t/mysqlbinlog.test:
  Added test to verify if the 'BEGIN', 'COMMIT' and 'ROLLBACK' are output
  in regardless of database filtering

          replication
              
MySQL server uses wrong lock type (always TL_READ instead of
TL_READ_NO_INSERT when appropriate) for tables used in
subqueries of UPDATE statement. This leads in some cases to
a broken replication as statements are written in the wrong
order to the binlog.

sql/sql_yacc.yy:
  * Set lock_option to either TL_READ_NO_INSERT or
    TL_READ for any sub-SELECT following UPDATE.
  * Changed line adjusted for parser identation
    rules; code begins at column 13.

Add --help option.

   Solaris binary packages should be compiled with '-g0', not '-g'

 query
      
The fix for bug 46749 removed the check for OUTER_REF_TABLE_BIT 
and substituted it for a check on the presence of 
Item_ident::depended_from.
Removing it altogether was wrong : OUTER_REF_TABLE_BIT should 
still be checked in addition to depended_from (because it's not 
set in all cases and doesn't contradict to the check of depended_from).
Fixed by returning the old condition back as a compliment to the 
new one.

 - Create the "dummy" thread joinable and wait for it to
   exit before continuing in 'my_thread_global_init'
 - This way we know that the pthread library is initialized
   by one thread only

    Solaris binary packages should be compiled with '-g0', not '-g'

The main fix for this is done in the build tools,
but in the sources it affects "configure.in"
which sets "DEBUG_CXXFLAGS" to be used in all debug builds.

      
Initialize correctly client flags for the embedded client
Test cases in jp updated to work correctly with embedded server.

When parsing the service installation parameter in 
default_service_handling() make sure the value of the
optional parameter doesn't overwrite it's name.

with gcc 4.3.2
      
This is the fifth patch cleaning up more GCC warnings about
variables used before initialized using the new macro
UNINIT_VAR().

The problem is that argument buffer can be used as result buffer
and it leads to argument value change.
The fix is to use 'old buffer' as result buffer only
if first argument is not constant item.


mysql-test/r/func_str.result:
  test result
mysql-test/t/func_str.test:
  test case
sql/item_strfunc.cc:
  The problem is that argument buffer can be used as result buffer
  and it leads to argument value change.
  The fix is to use 'old buffer' as result buffer only
  if first argument is not constant item.

Updates the results of all the out-dated test suites and adds 
the special mysqltest command to enable innodb for the tests that need it.

            can crash under load

Backport from 5.1.
Does also include key cache fixes from:
Bug 44068 (RESTORE can disable the MyISAM Key Cache)
Bug 40944 (Backup: crash after myisampack)



include/keycache.h:
  Bug#17332 - changing key_buffer_size on a running server
              can crash under load
  Added KEY_CACHE components in_resize and waiting_for_resize_cnt.
myisam/mi_preload.c:
  Bug#17332 - changing key_buffer_size on a running server
              can crash under load
  Added code to allow LOAD INDEX to load indexes of different block size.
mysys/mf_keycache.c:
  Bug#17332 - changing key_buffer_size on a running server
              can crash under load
  .
  Changed resize_key_cache() to not disable the key cache
  after the flush phase. Changed queue handling to use
  standard functions. Wake all threads waiting on resize_queue.
  We can now have read/write threads waiting there (see below).
  .
  Combined add_to_queue() and the wait loops that were always
  following it to the new function wait_on_queue().
  Combined release_queue() and the condition that was always
  preceding it to the new function release_whole_queue().
  .
  Added code to flag and respect the exceptional situation
  BLOCK_IN_EVICTION.
  .
  Rewrote the resize branch of find_key_block().
  .
  Added code to the eviction handling in find_key_block()
  to catch more exceptional cases.
  .
  Changed key_cache_read(), key_cache_insert() and key_cache_write()
  so that they lock keycache->cache_lock whenever the key cache is
  initialized. Checking for a disabled cache and incrementing and
  decrementing the "resize counter" is always done within the lock.
  Locking and unlocking as well as counting the "resize counter" is
  now done once outside the loop. All three functions can now handle
  a NULL return from find_key_block. This happens in the flush phase
  of a resize and demands direct file I/O. Care is taken for
  secondary requests (PAGE_WAIT_TO_BE_READ) to wait in any case.
  Moved block status changes behind the copying of buffer data.
  key_cache_insert() does now read the block if the caller did
  supply less data than a full cache block.
  key_cache_write() does now take care of parallel running flushes
  (BLOCK_FOR_UPDATE, BLOCK_IN_FLUSHWRITE).
  .
  Changed free_block() to un-initialize block variables in the
  correct order and respect an exceptional BLOCK_IN_EVICTION state.
  .
  Changed flushing to take care for parallel running writes.
  Changed flushing to avoid freeing blocks in eviction.
  Changed flushing to consider that parallel writes can move blocks
  from the file_blocks hash to the changed_blocks hash.
  Changed flushing to take care for other parallel flushes.
  Changed flushing to assure that it ends with everything flushed.
  Optimized normal flush at end of statement (FLUSH_KEEP),
  but let other flush types be stringent.
  .
  Added some comments and debugging statements.
mysys/my_static.c:
  Bug#17332 - changing key_buffer_size on a running server
              can crash under load
  Removed an unused global variable.
sql/ha_myisam.cc:
  Bug#17332 - changing key_buffer_size on a running server
              can crash under load
  Moved an automatic (stack) variable to the scope where it is used.
sql/sql_table.cc:
  Bug#17332 - changing key_buffer_size on a running server
              can crash under load
  Changed TL_READ to TL_READ_NO_INSERT in mysql_preload_keys.

Memory allocated in TMP_TABLE_PARAM::copy_field is not cleaned up.
The fix is to clean up TMP_TABLE_PARAM::copy_field array in JOIN::destroy.


mysql-test/r/explain.result:
  test result
mysql-test/t/explain.test:
  test case
sql/sql_select.cc:
  Memory allocated in TMP_TABLE_PARAM::copy_field is not cleaned up.
  The fix is to clean up TMP_TABLE_PARAM::copy_field array in JOIN::destroy.