Includes 5.6 changesets for:
*****
Fix for BUG#13489996 valgrind:conditional jump or move depends on uninitialised values-field_blob.
blob_ptr_size was not initialized properly: remove this variable.
*****
Bug#14021323 CRASH IN FIELD::SET_NULL WHEN INSERTING ROWS TO NEW TABLE
*****
revno: 4559
committer: Marc Alff <marc.alff@oracle.com>
branch nick: mysql-5.6-bug14741537-v4
timestamp: Thu 2012-11-08 22:40:31 +0100
message:
Bug#14741537 - MYSQL 5.6, GTID AND PERFORMANCE_SCHEMA
Before this fix, statements using performance_schema tables:
- were marked as unsafe for replication,
- did cause warnings during execution,
- were written to the binlog, either in STATEMENT or ROW format.
When using replication with the new GTID feature,
unsafe warnings are elevated to errors,
which prevents to use both the performance_schema and GTID together.
The root cause of the problem is not related to raising warnings/errors
in some special cases, but deeper: statements involving the performance
schema should not even be written to the binary log in the first place,
because the content of the performance schema tables is 'local' to a server
instance, and may differ greatly between nodes in a replication
topology.
In particular, the DBA should be able to configure (INSERT, UPDATE, DELETE)
or flush (TRUNCATE) performance schema tables on one node,
without affecting other nodes.
This fix introduces the concept of a 'non-replicated' or 'local' table,
and adjusts the replication logic to ignore tables that are not replicated
when deciding if or how to log a statement to the binlog.
Note that while this issue was detected using the performance_schema,
other tables are also affected by the same problem.
This fix define as 'local' the following tables, which are then never
replicated:
- performance_schema.*
- mysql.general_log
- mysql.slow_log
- mysql.slave_relay_log_info
- mysql.slave_master_info
- mysql.slave_worker_info
Existing behavior for information_schema.* is unchanged by this fix,
to limit the scope of changes.
Coding wise, this fix implements the following changes:
1)
Performance schema tables are not using any replication flags,
since performance schema tables are not replicated.
2)
In open_table_from_share(),
tables with no replication capabilities (performance_schema.*),
tables with TABLE_CATEGORY_LOG (logs)
and tables with TABLE_CATEGORY_RPL_INFO (replication)
are marked as non replicated, with TABLE::no_replicate
3)
A new THD member, THD::m_binlog_filter_state,
indicate if the current statement is written to the binlog
(normal cases for most statements), or is to be discarded
(because the statements affects non replicated tables).
4)
In THD::decide_logging_format(), the replication logic
is changed to take into account non replicated tables.
Statements that affect only non replicated tables are
executed normally (no warning or errors), but not written
to the binlog.
Statements that affect (i.e., write to) a replicated table
while also using (i.e., reading from or writing to) a non replicated table
are executed normally in MIXED and ROW binlog format,
and cause a new error in STATEMENT binlog format.
THD::decide_logging_format() uses THD::m_binlog_filter_state
to indicate if a statement is to be ignored, when writing to
the binlog.
5)
In THD::binlog_query(), statements marked as ignored
are not written to the binary log.
6)
For row based replication, the existing test for 'table->no_replicate',
has been moved from binlog_log_row() to check_table_binlog_row_based().
SERIALIZABLE
Problem:
The documentation claims that WITH CONSISTENT SNAPSHOT will work for both
REPEATABLE READ and SERIALIZABLE isolation levels. But it will work only
for REPEATABLE READ isolation level. Also, the clause WITH CONSISTENT
SNAPSHOT is silently ignored when it is not applicable to the given isolation
level.
Solution:
Generate a warning when the clause WITH CONSISTENT SNAPSHOT is ignored.
rb#2797 approved by Kevin.
Note: Support team wanted to push this to 5.5+.
Hook in the wait-for-prior-commit logic (not really tested yet).
Clean up some resource maintenance around rpl_group_info (may still be some
smaller issues there though).
Add a ToDo list at the top of rpl_parallel.cc
Implement facility for the commit in one thread to wait for the commit of
another to complete first. The wait is done in a way that does not hinder
that a waiter and a waitee can group commit together with a single fsync()
in both binlog and InnoDB. The wait is done efficiently with respect to
locking.
The patch was originally made to support TaoBao parallel replication with
in-order commit; now it will be adapted to also be used for parallel
replication of group-committed transactions.
A waiter THD registers itself with a prior waitee THD. The waiter will then
complete its commit at the earliest in the same group commit of the waitee
(when using binlog). The wait can also be done explicitly by the waitee.
added:
include/mysql/service_thd_timezone.h
libservices/thd_timezone_service.c
storage/connect/inihandl.h
storage/connect/mysql-test/connect/r/grant.result
storage/connect/mysql-test/connect/r/ini_grant.result
storage/connect/mysql-test/connect/r/mysql_grant.result
storage/connect/mysql-test/connect/r/occur.result
storage/connect/mysql-test/connect/r/odbc_sqlite3_grant.result
storage/connect/mysql-test/connect/r/pivot.result
storage/connect/mysql-test/connect/r/xcol.result
storage/connect/mysql-test/connect/r/xml_grant.result
storage/connect/mysql-test/connect/std_data/expenses.txt
storage/connect/mysql-test/connect/t/grant.test
storage/connect/mysql-test/connect/t/have_odbc_sqlite3.inc
storage/connect/mysql-test/connect/t/ini_grant.test
storage/connect/mysql-test/connect/t/mysql_grant.test
storage/connect/mysql-test/connect/t/occur.test
storage/connect/mysql-test/connect/t/odbc_sqlite3_grant.test
storage/connect/mysql-test/connect/t/pivot.test
storage/connect/mysql-test/connect/t/xcol.test
storage/connect/mysql-test/connect/t/xml_grant.test
storage/connect/rcmsg.h
storage/connect/taboccur.cpp
storage/connect/taboccur.h
storage/connect/tabutil.cpp
storage/connect/tabutil.h
storage/connect/tabxcl.cpp
storage/connect/tabxcl.h
modified:
include/my_global.h
include/my_time.h
include/mysql.h.pp
include/mysql/plugin.h
include/mysql/plugin_audit.h.pp
include/mysql/plugin_auth.h.pp
include/mysql/plugin_ftparser.h.pp
include/mysql/services.h
include/mysql_time.h
include/probes_mysql_nodtrace.h
include/service_versions.h
libservices/CMakeLists.txt
mysql-test/r/handlersocket.result
mysql-test/r/plugin.result
mysql-test/suite/plugins/r/show_all_plugins.result
sql/item_func.cc
sql/mysqld.cc
sql/set_var.cc
sql/sql_class.cc
sql/sql_plugin.cc
sql/sql_plugin.h
sql/sql_plugin_services.h
sql/sql_show.cc
sql/sys_vars.cc
storage/connect/CMakeLists.txt
storage/connect/catalog.h
storage/connect/colblk.cpp
storage/connect/colblk.h
storage/connect/connect.cc
storage/connect/connect.h
storage/connect/filamdbf.cpp
storage/connect/global.h
storage/connect/ha_connect.cc
storage/connect/ha_connect.h
storage/connect/inihandl.c
storage/connect/maputil.h
storage/connect/mycat.cc
storage/connect/myconn.cpp
storage/connect/myconn.h
storage/connect/mysql-test/connect/r/bin.result
storage/connect/mysql-test/connect/r/csv.result
storage/connect/mysql-test/connect/r/dbf.result
storage/connect/mysql-test/connect/r/dir.result
storage/connect/mysql-test/connect/r/fix.result
storage/connect/mysql-test/connect/r/fmt.result
storage/connect/mysql-test/connect/r/ini.result
storage/connect/mysql-test/connect/r/mysql.result
storage/connect/mysql-test/connect/r/odbc_sqlite3.result
storage/connect/mysql-test/connect/r/tbl.result
storage/connect/mysql-test/connect/r/upd.result
storage/connect/mysql-test/connect/r/vec.result
storage/connect/mysql-test/connect/r/xml.result
storage/connect/mysql-test/connect/t/bin.test
storage/connect/mysql-test/connect/t/csv.test
storage/connect/mysql-test/connect/t/dbf.test
storage/connect/mysql-test/connect/t/dir.test
storage/connect/mysql-test/connect/t/fix.test
storage/connect/mysql-test/connect/t/fmt.test
storage/connect/mysql-test/connect/t/ini.test
storage/connect/mysql-test/connect/t/mysql.test
storage/connect/mysql-test/connect/t/odbc_sqlite3.test
storage/connect/mysql-test/connect/t/tbl.test
storage/connect/mysql-test/connect/t/vec.test
storage/connect/mysql-test/connect/t/xml.test
storage/connect/odbconn.cpp
storage/connect/osutil.c
storage/connect/osutil.h
storage/connect/plgcnx.h
storage/connect/plgdbsem.h
storage/connect/plgdbutl.cpp
storage/connect/plugutil.c
storage/connect/rcmsg.c
storage/connect/reldef.cpp
storage/connect/tabcol.cpp
storage/connect/tabcol.h
storage/connect/tabfmt.cpp
storage/connect/tabmysql.cpp
storage/connect/tabmysql.h
storage/connect/tabodbc.cpp
storage/connect/tabpivot.cpp
storage/connect/tabpivot.h
storage/connect/tabsys.cpp
storage/connect/tabsys.h
storage/connect/tabtbl.cpp
storage/connect/tabtbl.h
storage/connect/tabwmi.cpp
storage/connect/user_connect.cc
storage/connect/valblk.cpp
storage/connect/valblk.h
storage/connect/value.cpp
storage/connect/value.h
storage/connect/xobject.h
storage/connect/xtable.h
storage/perfschema/ha_perfschema.cc
pending merges:
Alexander Barkov 2013-06-08 Fixing a few compiler warnings
Olivier Bertrand 2013-06-05 - Change CRLF line endings to LF
Olivier Bertrand 2013-06-04 - Adding parallelism to the TBL table type
Sergei Golubchik 2013-06-03 compiler warnings
Alexander Barkov 2013-06-03 Fixing the problem with my_bool_t define...
Olivier Bertrand 2013-05-28 - Fix crash when a null qrp is returned ...
Olivier Bertrand 2013-05-28 - Extending connect_assisted_discovery c...
Alexander Barkov 2013-05-28 Recording test results forgotten in the ...
Alexander Barkov 2013-05-27 [merge] Merging with the latest 10.0
Alexander Barkov 2013-05-27 - Fixing embedded verision of the Connec...
Alexander Barkov 2013-05-27 Fixing ABI template, to take into accoun...
Alexander Barkov 2013-05-27 Fixing ABI template, to take into accoun...
Olivier Bertrand 2013-05-27 - Fix Windows compile error
Alexander Barkov 2013-05-24 Adding the timezone plugin service, to c...
Alexander Barkov 2013-05-24 Do not run mysql.test in case of embedde...
Alexander Barkov 2013-05-24 Splitting SQLite3 tests into two parts:
Alexander Barkov 2013-05-24 Removing more cases of direct use of thd.
Alexander Barkov 2013-05-24 Removing direct access to thd, using fun...
Olivier Bertrand 2013-05-24 - Fix setting default type to MYSQL->PRO...
Alexander Barkov 2013-05-23 Connect: fixing non thread-safe code.
Olivier Bertrand 2013-05-22 - Changing CONNECT version number and date
Alexander Barkov 2013-05-21 "mtr --suite=connect --embedded" tests d...
Olivier Bertrand 2013-05-20 - Correct misplaced parenthesis in last ...
Olivier Bertrand 2013-05-20 - Save and restore srcdef when getting a...
Olivier Bertrand 2013-05-19 - Removing unused copy file
Olivier Bertrand 2013-05-19 [merge] - Commit merged and resolve
Alexander Barkov 2013-05-13 Fixing warnings (mostly "no previous dec...
Alexander Barkov 2013-05-13 Fixing compiler warnings ("no previous d...
Alexander Barkov 2013-05-13 Fixing a few "no previous declaration" w...
Alexander Barkov 2013-05-13 Fixing a few compilation warnings ("no p...
Olivier Bertrand 2013-05-19 - Allowing views and queries as paramete...
Olivier Bertrand 2013-05-13 [merge] - Commit merged changes
Alexander Barkov 2013-05-13 [merge] Merge from maria-10.0
Alexander Barkov 2013-05-13 Enabling --suite=connect by default
Olivier Bertrand 2013-05-13 - Code cleaning. Eliminating unused code...
Olivier Bertrand 2013-05-13 - fix use of uninitialized variable (colp)
Olivier Bertrand 2013-05-13 - Set tdbp to NULL when ignored
Olivier Bertrand 2013-05-12 - Changing mode from +x to -x
Olivier Bertrand 2013-05-12 - Code cleaning.
Olivier Bertrand 2013-05-11 - Fix tabpivot compile errors on Linux.
Olivier Bertrand 2013-05-11 - Added a test case for PIVOT tables
Olivier Bertrand 2013-05-10 - Add pivot table files and support
Olivier Bertrand 2013-05-10 - Added table type PIVOT
Olivier Bertrand 2013-05-09 - Fix inverted test on am in MYSQLDEF::D...
Olivier Bertrand 2013-05-05 - General code cleaning, eliminating a f...
Olivier Bertrand 2013-05-04 - Add test for XCOL and OCCUR tables
Olivier Bertrand 2013-05-02 - Adding a loop test to prevent PROXY ba...
Olivier Bertrand 2013-04-30 - Change in connect_assisted_discovery t...
Olivier Bertrand 2013-04-30 - Allow PROXY based tables to specify My...
Olivier Bertrand 2013-04-29 - Fix a bug causing a crash when using O...
Olivier Bertrand 2013-04-29 - Adding 3 new table types:
MYSQL_TIME and my_time_t and back.
Using the new service instead of direct access to thd.
added:
include/mysql/service_thd_timezone.h
libservices/thd_timezone_service.c
modified:
include/my_time.h
include/mysql.h.pp
include/mysql/plugin.h
include/mysql/plugin_audit.h.pp
include/mysql/plugin_auth.h.pp
include/mysql/plugin_ftparser.h.pp
include/mysql/services.h
include/mysql_time.h
include/service_versions.h
libservices/CMakeLists.txt
sql/sql_class.cc
sql/sql_plugin_services.h
storage/connect/value.cpp
NUMBER ALREADY USED BY 5.6
The problem was that the patch for Bug#13004581 added a new error
message to 5.5. This causes it to use an error number already used
in 5.6 by ER_CANNOT_LOAD_FROM_TABLE_V2. Which means that error
message number stability between GA releases is broken.
This patch fixes the problem by removing the error message and
using ER_UNKNOWN_ERROR instead.
NUMBER ALREADY USED BY 5.6
The problem was that the patch for Bug#13004581 added a new error
message to 5.5. This causes it to use an error number already used
in 5.6 by ER_CANNOT_LOAD_FROM_TABLE_V2. Which means that error
message number stability between GA releases is broken.
This patch fixes the problem by removing the error message and
using ER_UNKNOWN_ERROR instead.
When logging to the binary log in row, updates and deletes to a BLACKHOLE
engine table are skipped.
It is impossible to log binary log in row format for updates and deletes to
a BLACKHOLE engine table, as no row events can be generated in these cases.
After fix, generate a warning for UPDATE/DELETE statements that modify a
BLACKHOLE table, as row events are not logged in row format.
Merge of 10.0-mdev26 feature tree into 10.0-base.
Global transaction ID is prepended to each event group in the binlog.
Slave connect can request to start from GTID position instead of specifying
file name/offset of master binlog. This facilitates easy switch to a new
master.
Slave GTID state is stored in a table mysql.rpl_slave_state, which can be
InnoDB to get crash-safe slave state.
GTID includes a replication domain ID, allowing to keep track of distinct
positions for each of multiple masters.
Syntax modified to allow statements:
ALTER TABLE ADD/DROP COLUMN
ALTER TABLE ADD/DROP INDEX
ALTER TABLE ADD/DROP FOREIGN KEY
ALTER TABLE ADD/DROP PARTITION
ALTER TABLE CHANGE COLUMN
ALTER TABLE MODIFY COLUMN
DROP INDEX
to have IF (NOT) EXISTS options.
Appropriate implementations added to mysql_alter_table().
per-file comments:
mysql-test/r/alter_table.result
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
test result updated.
mysql-test/r/fulltext.result
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
mysql-test/r/partition.result
test result updated.
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
mysql-test/t/alter_table.test
tests added.
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
mysql-test/t/fulltext.test
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
tests added.
mysql-test/t/partition.test
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
tests added.
sql/field.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
create_if_not_exists field added.
sql/field.h
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
create_if_not_exists field added.
sql/partition_info.h
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
has_unique_name made public.
sql/sp_head.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
sql/sql_class.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
create_if_not_exists inited.
sql/sql_class.h
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
create_if_not_exists inited.
sql/sql_lex.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
check_exists inited.
sql/sql_lex.h
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
check_exists inited.
sql/sql_parse.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
check_exists inited.
sql/sql_table.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
handle_if_exists_options() added.
it's called in mysql_alter_table().
sql/sql_trigger.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
check_exists instead of drop_if_exists.
sql/sql_view.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
check_exists instead of drop_if_exists.
sql/sql_yacc.yy
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
sintax modified.
The patch contributed by Konstantin Osipov applied.
Native comments:
Implement multiple user-level locks per connection.
GET_LOCK() function in MySQL allows a connection to hold at most
one user level lock. Taking a new lock automatically releases the
old lock, if any.
The limit of one lock per session existed since early versions
of MySQL didn't have a deadlock detector for SQL locks.
MDL patches in MySQL 5.5 added a deadlock detector,
so starting from 5.5 it became possible to take multiple locks
in any order -- a deadlock, should it occur, would be detected
and an error returned to the client which closed the wait chain.
This is exactly what is done in this patch: ULLs are moved
to use MDL subsystem.
SCHEDULER DROPS EVENTS
Problem: On a semi sync enabled server (Master/Slave),
if event scheduler drops an event after completion,
server crashes.
Analaysis: If an event is created with "ON COMPLETION
NOT PRESERVE" clause, event scheduler deletes the event
upon event completion(expiration) and the thread object
will be destroyed. In the destructor of the thread object,
mysys_var member is set to zero explicitly. Later from
the same destructor call(same execution path),
incase of semi sync enabled server, while cleanup is called,
THD::mysys_var member is accessed by THD::enter_cond()
function which causes server to crash.
Fix: mysys_var should not be explicitly set to zero and
also it is not required.
sql/sql_class.cc:
mysys_var should not be explicitly set to zero.
-Change my_rnd() slightly to make it safer if two threads use it at the same time.
-Avoid some sprintf and strmov in vio.
-Changed thread_count to be automaticly incremented (instead of under LOCK_thread_count).
-Thread cache now uses LOCK_thread_cache instead of LOCK_thread_count.
-Moved delete thd out from LOCK_thread_count.
-Save some mysql_cond_broadcast(&COND_thread_count) calls.
-Removed call to getsockname() during connect.
-Initialize random generator without locks.
Other things:
-Fixed test cases that depends on changes for LOCK_grant
-Added thread_safe_decrement32() and thread_safe_increment32()
-Removed sql_rnd_with_mutex() and get_thread_running()
-In check_table_access() don't lock LOCK_grant if we can resolve the grant with user or db level grants (the normal case).
-Don't use a lock for setting THD->query_id.
-Fixed bug where thd->set_query_id() could be set to same value by multiple threads.
Thanks to Yoshinori Matsunobu for the benchmark of connection speed and to
Domas Mituzas for the inspiration for many of the fixes.
include/violite.h:
Change desc to a string pointer
mysql-test/suite/perfschema/r/all_instances.result:
Added new mutex
mysql-test/suite/perfschema/t/func_mutex.test:
Test for LOCK_system_variables_hash instead of LOCK_grant, as LOCK_grant is not anymore always taken for SELECT's.
mysys/my_gethwaddr.c:
More DBUG
mysys/my_rnd.c:
Change my_rnd() slightly to make it safer if two threads use it at the same time.
sql/event_scheduler.cc:
Changed thread_count to be automically incremented
Moved some safe things out from LOCK_thread_count.
Simplify deleting of THD for running thread.
sql/mysqld.cc:
Changed thread_count to be automically incremented
Thread cache now uses LOCK_thread_cache instead of LOCK_thread_count
Added delete_running_thd()
Moved delete thd out from LOCK_thread_count
More DBUG
Only call mysql_cond_broadcast(&COND_thread_count) if thread_count is 0
Removed call to getsockname() (old not anymore needed check)
sql/mysqld.h:
Removed sql_rnd_with_mutex() (not needed anymore)
Removed not used function get_thread_running()
Added thread_safe_decrement32() and thread_safe_increment32()
Simplified dec_thread_running() and inc_thread_running()
next_query_id() should return the original value for global_query_id, not the next one.
(Bug introduced with MySQL 5.5 merge).
sql/sql_acl.cc:
In check_table_access() don't lock LOCK_grant if we can resolve the grant with user or db level grants (the normal case).
sql/sql_class.cc:
Removed thd_lock_thread_count() and thd_unlock_thread_count()
Initialize random generator without locks
Don't use a lock for setting THD->query_id.
(This is only accessed by thread owning the THD)
sql/sql_class.h:
Don't use a lock for setting THD->query_id.
sql/sql_insert.cc:
Changed thread_count to be automically incremented
sql/sql_parse.cc:
Changed thread_count to be automically incremented
Fixed bug where thd->set_query_id() could be set to same value by multiple threads.
vio/vio.c:
Don't generate 'desc' with sprintf/strmov. Assign a pointer instead.
(Good enough as this is just for debugging)
revid:georgi.kodinov@oracle.com-20120309130449-82e3bs5v3et1x0ef
committer: Georgi Kodinov <Georgi.Kodinov@Oracle.com>
timestamp: Fri 2012-03-09 15:04:49 +0200
message:
Bug #12408412: GROUP_CONCAT + ORDER BY + INPUT/OUTPUT SAME
USER VARIABLE = CRASH
Moved the preparation of the variables that receive the output from
SELECT INTO from execution time (JOIN:execute) to compile time
(JOIN::prepare). This ensures that if the same variable is used in the
SELECT part of SELECT INTO it will be properly marked as non-const
for this query.
Test case added.
Used proper fast iterator.
a better fix (much smaller and without regressions) is coming from 5.1
MySQL Bug #12408412: GROUP_CONCAT + ORDER BY + INPUT/OUTPUT SAME USER VARIABLE = CRASH
and
MySQL Bug#14664077 SEVERE PERFORMANCE DEGRADATION IN SOME CASES WHEN USER VARIABLES ARE USED
sql/item_func.cc:
don't use anything from Item_func_set_user_var::fix_fields()
in Item_func_set_user_var::save_item_result()
sql/sql_class.cc:
Call suv->save_item_result(item) *before* doing suv->fix_fields(), because
the former evaluates the item (and caches its value), while the latter marks
the user variable as non-const. The problem is that the item was fix_field'ed
when the user variable was const, and it doesn't expect it to change to non-const
in the middle of the execution.
Analysis:
--------
As part of the fix for Bug#11757464, the 'out of memory' error
condition was not pushed to the diagnostic area as it requires
memory allocation. However in cases of SIGNAL/RESIGNAL 'out of
memory' error, the server may not be out of memory. Hence it
would be good to report the error in such cases.
Fix:
---
Push only non fatal 'out of memory' errors to the diagnostic area.
Since SIGNAL/RESIGNAL of 'out of memory' error may not be fatal,
the error is reported.
