------------------------------------------------------------
revno: 3317
revision-id: davi.arnaut@sun.com-20090522170916-fzc5ca3tjs9roy1t
parent: patrick.crews@sun.com-20090522152933-ole8s3suy4zqyvku
committer: Davi Arnaut <Davi.Arnaut@Sun.COM>
branch nick: 41860-6.0
timestamp: Fri 2009-05-22 14:09:16 -0300
message:
Bug#41860: Without Windows named pipe
The problem was that the patch for Bug#10374 broke named pipe
and shared memory transports on Windows due to a failure to
implement a dummy poll method for transports other than BSD
sockets. Another problem was that mysqltest lacked support
for named pipe and shared memory connections, which lead to
misleading test cases that were supposed run common queries
over both transports.
The solution is to properly implement, at the VIO layer, the
poll and is_connected methods. The is_connected method is
implemented for every suppported transport and the poll one
only where it makes sense. Furthermore, support for named pipe
and shared memory connections is added to mysqltest as to
enable testing of both transports using the test suite.
------------------------------------------------------------
revno: 2597.37.3
revision-id: sp1r-davi@mysql.com/endora.local-20080328123626-16430
parent: sp1r-anozdrin/alik@quad.opbmk-20080327125300-11290
committer: davi@mysql.com/endora.local
timestamp: Fri 2008-03-28 09:36:26 -0300
message:
Bug#10374 GET_LOCK does not let connection to close on the server side if it's aborted
The problem is that the server doesn't detect aborted connections which
are waiting on a lock or sleeping (user sleep), wasting system resources
for a connection that is already dead.
The solution is to peek at the connection every five seconds to verify if
the connection is not aborted. A aborted connection is detect by polling
the connection socket for available data to be read or end of file and in
case of eof, the wait is aborted and the connection killed.
------------------------------------------------------------
revno: 2572.2.1
revision-id: sp1r-davi@mysql.com/endora.local-20080227225948-16317
parent: sp1r-anozdrin/alik@quad.-20080226165712-10409
committer: davi@mysql.com/endora.local
timestamp: Wed 2008-02-27 19:59:48 -0300
message:
Bug#27525 table not found when using multi-table-deletes with aliases over several databas
Bug#30234 Unexpected behavior using DELETE with AS and USING
The multi-delete statement has a documented limitation that
cross-database multiple-table deletes using aliases are not
supported because it fails to find the tables by alias if it
belongs to a different database. The problem is that when
building the list of tables to delete from, if a database
name is not specified (maybe an alias) it defaults to the
name of the current selected database, making impossible to
to properly resolve tables by alias later. Another problem
is a inconsistency of the multiple table delete syntax that
permits ambiguities in a delete statement (aliases that refer
to multiple different tables or vice-versa).
The first step for a solution and proper implementation of
the cross-databse multiple table delete is to get rid of any
ambiguities in a multiple table statement. Currently, the parser
is accepting multiple table delete statements that have no obvious
meaning, such as:
DELETE a1 FROM db1.t1 AS a1, db2.t2 AS a1;
DELETE a1 AS a1 FROM db1.t1 AS a1, db2.t2 AS a1;
The solution is to resolve the left part of a delete statement
using the right part, if the a table on right has an alias,
it must be referenced in the left using the given alias. Also,
each table on the left side must match unambiguously only one
table in the right side.
------------------------------------------------------------
revno: 2630.2.13
revision-id: davi@mysql.com-20080612190452-cx6h7rm557bcq7sa
parent: davi@mysql.com-20080611124915-csejwrxfdga9upho
committer: Davi Arnaut <davi@mysql.com>
branch nick: 36785-6.0
timestamp: Thu 2008-06-12 16:04:52 -0300
message:
Bug#36785: Wrong error message when group_concat() exceeds max length
The problem is that when ER_CUT_VALUE_GROUP_CONCAT is elevated
to a error, the message does not get updated with the number of
cut lines when group_concat() exceeds max length.
The solution is to modify the warning message to be more meaningful
by giving the number of the line that was cut and to issue the warning
for each line that is cut. This approach is inline with how other
per-row truncated data warnings are issued avoids violating the warning
internal interface.
------------------------------------------------------------
revno: 2630.39.3
revision-id: davi.arnaut@sun.com-20081210215359-i876m4zgc2d6rzs3
parent: kostja@sun.com-20081208222938-9es7wl61moli71ht
committer: Davi Arnaut <Davi.Arnaut@Sun.COM>
branch nick: 36649-6.0
timestamp: Wed 2008-12-10 19:53:59 -0200
message:
Bug#36649: Condition area is not properly cleaned up after stored routine invocation
The problem is that the diagnostics area of a trigger is not
isolated from the area of the statement that caused the trigger
invocation. In MySQL terms, it means that warnings generated
during the execution of the trigger are not removed from the
"warning area" at the end of the execution.
Before this fix, the rules for MySQL message list life cycle (see
manual entry for SHOW WARNINGS) did not apply to statements
inside stored programs:
- The manual says that the list of messages is cleared by a
statement that uses a table (any table). However, such
statement, if run inside a stored program did not clear the
message list.
- The manual says that the list is cleared by a statement that
generates a new error or a warning, but this was not the case
with stored program statements either and is changed to be the
case as well.
In other words, after this fix, a statement has the same effect
on the message list regardless of whether it's executed inside a
stored program/sub-statement or not.
This introduces an incompatible change:
- before this fix, a, e.g. statement inside a trigger could
never clear the global warning list
- after this fix, a trigger that generates a warning or uses a
table, clears the global warning list
- however, when we leave a trigger or a function, the caller's
warning information is restored (see more on this below).
This change is not backward compatible as it is intended to make
MySQL behavior similar to the SQL standard behavior:
A stored function or trigger will get its own "warning area" (or,
in standard terminology, diagnostics area). At the beginning of
the stored function or trigger, all messages from the caller area
will be copied to the area of the trigger. During execution, the
message list will be cleared according to the MySQL rules
described on the manual (SHOW WARNINGS entry). At the end of the
function/trigger, the "warning area" will be destroyed along with
all warnings it contains, except that if the last statement of
the function/trigger generated messages, these are copied into
the "warning area" of the caller.
Consequently, statements that use a table or generate a warning
*will* clear warnings inside the trigger, but that will have no
effect to the warning list of the calling (outer) statement.
------------------------------------------------------------
revno: 3624
revision-id: jon.hauglid@sun.com-20090928163426-2lg1gofzz44xzzxf
parent: alik@sun.com-20090928050057-r0a62x9czr01q7oe
committer: Jon Olav Hauglid <jon.hauglid@sun.com>
branch nick: mysql-6.0-codebase-bugfixing-bug47304
timestamp: Mon 2009-09-28 18:34:26 +0200
message:
Bug #47304 Test main.mdl_sync fails on embedded server
The problem was that SHOW PROCESSLIST was trying to access
a thread that was not properly running and therefore had an
uninitialized mutex.
This patch explicitly resets thd->mysys_var after each embedded
server command to prevent the mutex from being accessed in an
illegal state.
The patch also re-enables lock_multi.test and mdl_sync.test for
embedded server as they had been disabled because of this bug.
Added this option, named as "--dump-slave". The purpose of this option is to be
able to produce a dump from a slave used for making backups of the master. Originally,
dumping from the main master was fine, but as more data accumulated, the dump process
would take over 30 minutes, locking up the master database hence website for 30 minutes.
A slave dedicated to producing backups was the answer, but I needed a dump that could be
used to restore a slave instantly and in order to do that, it has to have three things
contained in the dump:
1. "STOP SLAVE;" at the beginning
2. "CHANGE MASTER TO ...<the master - info from 'show slave status'>"
3. "START SLAVE;" at the end
These options in this changeset contain this.
--stop-slave adds "STOP SLAVE" to the beginning of the dump and "STOP SLAVE"
to the end of the dump.
--include-host gives the user the option to have the host explicitely added
to the "CHANGE MASTER TO ..." line.
--dump-slave adds the "CHANGE MASTER ..." to the dump representing not the slave's
master binlog info, but the slave's master's info from "SHOW SLAVE STATUS"
Feature from Eric Bergen, CLA signed 2007-06-27.
Adds new mysql client option "--auto-vertical-output", which causes
the client to test whether a result table is too wide for the current
window (where available) and emit vertical results in that case.
Otherwise, it sends normal tabular results.
deadlocks
Backport of revno: 2617.68.35
The problem was that if one connection is running a multi-statement
transaction which involves a single partitioned table, and another
connection attempts to alter the table to drop a non-existing partition,
(which of course will fail), the first connection still gets
ER_LOCK_DEADLOCK and cannot proceed anymore.
This bug is no longer reproducable. This has also been tested with the
patch for Bug#46654 "False deadlock on concurrent DML/DDL with partitions,
inconsistent behavior" which concerned a similar problem but where the
ALTER TABLE is semantically correct.
Test case added in partition_sync.test.
Bug#42662: maketime() and signedness
Item_time_typecast::val_int() dropped sign from
MYSQL_TIME gotten using from get_time().
Propagates sign now.
Backported to 5.5.0 (6.0-codebase revid: 1810.3897.1)
When less than six places are given for microseconds, we zerofill from
the right (leftmost place is always 1/10s). We only did this when all
announced date/time fields were given; now we also format fractional
seconds when more significant fields are left out.
