Avoided exponential recursive calls of JOIN_CACHE::join_records() in the case
of non-nested outer joins.
A different solution is required to resolve this performance problem for
nested outer joins.
Don't restore the whole of thd->server_status after a routine invocation,
only restore SERVER_STATUS_CURSOR_EXISTS and SERVER_STATUS_LAST_ROW_SENT,
as --ps --embedded needs.
In particular, don't restore SERVER_STATUS_IN_TRANS.
sporadically
Fix: Modify test to be smaller so that testcase timeout does not
trigger. We already have a test for --big-test setup
(innodb.innodb_simulate_comp_failures).
Fix the bug properly (plugin cannot be unloaded as long as it's locked).
Enable and fix the test case.
Significantly reduce number of LOCK_plugin locks for semisync
(practically all locks were removed)
~40% bugfixed(*) applied
~40$ bugfixed reverted (incorrect or we're not buggy)
~20% bugfixed applied, despite us being not buggy
(*) only changes in the server code, e.g. not cmakefiles
This bug only happens in case of paritioned tables used in LOCK TABLES and implicit_commit() was called
(as part of trying to execute a CREATE TABLE withing lock tables)
The problem was that Aria could not move the tables from one transaction to the new one, as thd->open_tables contained
a partitioned tables and not an Aria table.
Fix:
- Store a list of all open tables that are part of a share in share->open_tables
- In maria::implict_commit() use transaction->used_tables & share->open_tables to find out which tables
was part of the current transaction instead of using thd->open_tables, which may contain partitioned tables.
mysql-test/suite/maria/maria_partition.result:
Added test case
mysql-test/suite/maria/maria_partition.test:
Added test case
storage/maria/ha_maria.cc:
Use trn->used tables and share->open_tables to find out which tables was part of the current transaction instead of using thd->open_tables.
storage/maria/ma_close.c:
Remove closed table from share->open_list
storage/maria/ma_open.c:
Add table to share->open_list
storage/maria/ma_state.c:
Added comment
storage/maria/maria_def.h:
Added share->open_list, a list of all tables that is using this share.
- adjusted a test result according to the change made for MDEV-6100;
- added explicit timezone for engines/iuds, since MTR in
MariaDB does not set it like MySQL's, and tests with constant TIMESTAMP
can have different outcome
We don't support changing tc_log implementation at run time.
If the first XA-capable engine is loaded with INSTALL PLUGIN - disable its
XA capabilities with a warning
MySQL Bug#71095: Wrong results with PARTITION BY LIST COLUMNS()
MySQL Bug#72803: Wrong "Impossible where" with LIST partitioning
MDEV-6240: Wrong "Impossible where" with LIST partitioning
- Backprot the fix from MySQL Bug#71095.
- When traversing JOIN_TABs with first_linear_tab/next_linear_tab(), don't forget
to enter the semi-join nest when it is the first table in the join order.
Failure to do so could cause e.g. I_S tables not to be filled.
The test case makes use of the fine DEBUG_SYNC facility. Furthermore,
since it needs synchronization on internal threads (dump and SQL
threads) the server code has DEBUG_SYNC commands internally deployed
and activated through the DBUG_EXECUTE_IF macro. The internal
DBUG_SYNC commands are then controlled from the test case through the
DEBUG variable.
There were three problems around the DEBUG + DEBUG_SYNC facility
usage:
1. When signaling the SQL thread to continue, the test would reset
immediately the DEBUG_SYNC variable. This could mean that the SQL
thread might loose the signal and continue to wait forever;
2. A similar scenario was happening with the dump thread on the
master. This thread was instructed to wait, and later it would be
signaled to continue, but immediately after the DEBUG_SYNC would be
reset. This could lead to the dump thread missing the signal and
wait forever;
3. The test was not cleaning itself up with respect to the
instrumentation of the dump thread. This would leave the
conditional execution of an internal DEBUG_SYNC command active
(through the usage of DBUG_EXECUTE_IF).
We fix#1 and #2 by waiting for the threads to receive the signal and
only then issue the reset. We fix#3 by reseting the DEBUG variable,
thus deactivating the dump thread internal DEBUG_SYNC command.
Bug#16415173 CRLF INSTEAD OF LF IN SQL-BENCH SCRIPTS
Correct perms and converts from Windows style to UNIX style line endings on some files.
Fix perms on installed ini files.
(MySQL 5.5 version)
CORRUPTS FRM
Analysis:
---------
ALTER TABLE on a partitioned table resulted in the wrong
engine being written into the table's FRM file and displayed
in SHOW CREATE TABLE.
The prep_alter_part_table() modifies the partition_info object
for TABLE instance representing the old version of table.
If the ALTER TABLE ENGINE statement fails, the partition_info
object for the TABLE contains the altered storage engine name.
The SHOW CREATE TABLE uses the TABLE object to display the table
information, hence displays incorrect storage engine for the table.
Also a subsequent successful ALTER TABLE operation will write the
incorrect engine information into the FRM file.
Fix:
---
A copy of the partition_info object is created before modification so
that any changes would not cause the the original partition_info object
to be modified if the ALTER TABLE fails.(Backported part of the code
provided as fix for bug#14156617 in mysql-5.6.6).
DISCONNECT CON1 AND CON2
Problem:
The test suite/binlog/t/binlog_killed.test makes the connections
con1 and con2 but forgets to disconnect them + wait till that
operation is finished at test end.
This mistake has the potential to harm subsequent tests in
case these tests depend on the content of the processlist.
Solution:
Added disconnect + wait_until_disconnected.inc
within the test cleanup.
- Filesort has an optmization where it reads only columns that are
needed before the sorting is done.
- When ref(_or_null) is picked by the join optimizer, it may remove parts
of WHERE clause that are guaranteed to be true.
- However, if we use quick select, we must put all of the range columns into the
read set. Not doing so will may cause us to fail to detect the end of the range.
That particular part of slave connect to master was missing code to handle
retry in case of network errors. The same problem is present in MySQL 5.5, but
fixed in MySQL 5.6.
Fixed with this patch, by adding the code (mostly identical to MySQL 5.6), and
also adding a test case.
I checked other queries done towards master during slave connect, and they now
all seem to handle reconnect in case of network failures.
