into  bodhi.local:/opt/local/work/mysql-5.1-runtime-merge

doesn't find the column"

When a user was using 4.1 tables with VARCHAR column and 5.0 server
and a query that used a temporary table to resolve itself, the
table metadata for the varchar column sent to client was incorrect:
MYSQL_FIELD::table member was empty.

The bug was caused by implicit "upgrade" from old VARCHAR to new
VARCHAR hard-coded in Field::new_field, which did not preserve
the information about the original table. Thus, the field metadata
of the "upgraded" field pointed to an auxiliary temporary table
created for query execution.

The fix is to copy the pointer to the original table to the new field.

into  lamia.home:/home/timka/mysql/src/5.1-bug-21456

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.0-bug17591

  - BUG#15934: Instance manager fails to work;
  - BUG#18020: IM connect problem;
  - BUG#18027: IM: Server_ID differs;
  - BUG#18033: IM: Server_ID not reported;
  - BUG#21331: Instance Manager: Connect problems in tests;

The only test suite has been changed
(server codebase has not been modified).

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.0-bug17591

When a view was used inside a trigger or a function, lock type for
tables used in a view was always set to READ (thus making the view
non-updatable), even if we were trying to update the view.

The solution is to set lock type properly.

into  zim.(none):/home/brian/mysql/arch-5.1

into  zim.(none):/home/brian/mysql/arch-5.1

Fixed "discover" in the handler API.

Fixed problem where handlerton was not zero'ed. I need to look around, I suspect this problem is more widespread. 

into  example.com:/work/mysql-5.0-runtime

erroneous check

Problem: Actually there were two problems in the server code. The check
for SQLCOM_FLUSH in SF/Triggers were not according to the existing
architecture which uses sp_get_flags_for_command() from sp_head.cc .
This function was also missing a check for SQLCOM_FLUSH which has a
problem combined with prelocking. This changeset fixes both of these
deficiencies as well as the erroneous check in
sp_head::is_not_allowed_in_function() which was a copy&paste error.

into  alik.:/mnt/raid/alik/MySQL/devel/5.0-rt-bug16899

The following procedure was not possible if max_sp_recursion_depth is 0
create procedure show_proc() show create procedure show_proc;
  
Actually there is no recursive call but the limit is checked.
  
Solved by temporarily increasing the thread's limit just before the fetch from cache
and decreasing after that.

Changed trigger-handling code so that there will be the one
place for generate statement string for replication log
and for trigger file.

into  mysql.com:/home/cps/mysql/trees/mysql-5.1-virgin

Changes in an item tree done by optimizer weren't properly
registered and went unnoticed, which resulted in preliminary freeing
of used memory.

  
User name (host name) has limit on length. The server code relies on these
limits when storing the names. The problem was that sometimes these limits
were not checked properly, so that could lead to buffer overflow.

The fix is to check length of user/host name in parser and if string is too
long, throw an error.

into  lamia.home:/home/timka/mysql/src/5.0-bug-21456

into  example.com:/work/mysql-5.1-runtime

should work in Prepared Statements. Post-review changeset.

Problem: There are some commands which are avaiable to be executed in SP
         but cannot be prepared. This patch fixes this and makes it possible
         prepare these statements.

Changes: The commands later are made available in PS. RESET has been forbidden
         in SF/Trigger.

Solution: All current server commands where checked and those missing (see later)
          we added. Tests for all of the commands with repeated executions were
          added - testing with SP, SF and PS.

SHOW BINLOG EVENTS
SHOW (MASTER | SLAVE) STATUS
SHOW (MASTER | BINARY) LOGS
SHOW (PROCEDURE | FUNCTION) CODE (parsable only in debug builds)
SHOW CREATE (PROCEDURE | FUNCTION | EVENT | TABLE | VIEW)
SHOW (AUTHORS | CONTRIBUTORS | WARNINGS | ERRORS)
CHANGE MASTER
RESET (MASTER | SLAVE | QUERY CACHE)
SLAVE (START | STOP)
CHECKSUM (TABLE | TABLES)
INSTALL PLUGIN
UNINSTALL PLUGIN
CACHE INDEX
LOAD INDEX INTO CACHE
GRANT
REVOKE
KILL
(CREATE | RENAME | DROP) DATABASE
(CREATE | RENAME | DROP) USER
FLUSH (TABLE | TABLES | TABLES WITH READ LOCK | HOSTS | PRIVILEGES |
       LOGS | STATUS | MASTER | SLAVE | DES_KEY_FILE | USER_RESOURCES)

GROUP BY/DISTINCT pruning optimization must be done before ORDER BY 
optimization because ORDER BY may be removed when GROUP BY/DISTINCT
sorts as a side effect, e.g. in 
  SELECT DISTINCT <non-key-col>,<pk> FROM t1
  ORDER BY <non-key-col> DISTINCT
must be removed before ORDER BY as if done the other way around
it will remove both.

into  mysql.com:/home/cps/mysql/trees/mysql-5.1-virgin

into  mysql.com:/home/cps/mysql/trees/mysql-5.1-virgin

Implemented code review comments
Test cleanup

Plugins now when compiled or not compiled work correctly with status variables. 
Status variables from plugins now set their own names (removed bit where plugin name was pre-appended this broke Innodb and Cluster)
A few Makefile cleanups. 

into  weblab.(none):/home/marcsql/TREE/mysql-5.0-8153

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.0-bug21051-2

There were two problems: RESET QUERY CACHE took a long time to complete
and other threads were blocked during this time.

The patch does three things:
  1 fixes a bug with improper use of test-lock-test_again technique.
      AKA Double-Checked Locking is applicable here only in few places.
  2 Somewhat improves performance of RESET QUERY CACHE.
      Do my_hash_reset() instead of deleting elements one by one.  Note
      however that the slowdown also happens when inserting into sorted
      list of free blocks, should be rewritten using balanced tree.
  3 Makes RESET QUERY CACHE non-blocking.
      The patch adjusts the locking protocol of the query cache in the
      following way: it introduces a flag flush_in_progress, which is
      set when Query_cache::flush_cache() is in progress.  This call
      sets the flag on enter, and then releases the lock.  Every other
      call is able to acquire the lock, but does nothing if
      flush_in_progress is set (as if the query cache is disabled).
      The only exception is the concurrent calls to
      Query_cache::flush_cache(), that are blocked until the flush is
      over.  When leaving Query_cache::flush_cache(), the lock is
      acquired and the flag is reset, and one thread waiting on
      Query_cache::flush_cache() (if any) is notified that it may
      proceed.

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.1

into  bk-internal.mysql.com:/data0/bk/mysql-5.1-kt

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.1

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.1