This patch corrects a defect whereby the --mysqld, --my-print-defaults,
and --plugin-ini were required. These options are not required and the
code has been fixed accordingly.
The bug was accidentally fixed by fixing
Bug#11759688 52020: InnoDB can still deadlock on just INSERT...ON DUPLICATE KEY
a.k.a. the reintroduction of
Bug#7975 deadlock without any locking, simple select and update
alter_treable-big.test was failing due to the use of RAND() function which is no more
replication safe.
This has been modified using static values.
Also, 'sleep' has been replaced using 'debug_sync' and the execution time of the
test has been reduced significantly.
This test is now taken out of the disabled.def file and is being enabled.
a.k.a. Bug#7975 deadlock without any locking, simple select and update
Bug#7975 was reintroduced when the storage engine API was made
pluggable in MySQL 5.1. Instead of looking at thd->lex directly, we
rely on handler::extra(). But, we were looking at the wrong extra()
flag, and we were ignoring the TRX_DUP_REPLACE flag in places where we
should obey it.
innodb_replace.test: Add tests for hopefully all affected statement
types, so that bug should never ever resurface. This kind of tests
should have been added when fixing Bug#7975 in MySQL 5.0.3 in the
first place.
rb:806 approved by Sunny Bains
ALTER TABLE AND/OR PLUGIN/SEMISYNC
If a plugin was uninstalled, thread local values for plugin
variables of string type with PLUGIN_VAR_MEMALLOC flag were
not freed.
With this patch these variables are freed when thread is
done (like all other variables).
A patch for this bug has already been pushed. A minor change is made here.
The database to be used after re-enabling the disabled code is 'TEST'.
But instead, 'MYSQL' was being used.
This is the minor change that is being made here.
Don't do this for echo, instead:
1) Enable replacements also for assignment from backquoted SQL
2) Allow replace_regex to take a variable for the *entire* argument list
With this, the test can be amended, but only in its version in trunk
btr_pcur_restore_position_func(): When the cursor was positioned at
the tree infimum or supremum, initialize pos_state and latch_mode. The
assertion failed, because pos_state was BTR_PCUR_WAS_POSITIONED. In
the test failure of WL#5874, the purge thread attempted to restore the
cursor position on the infimum record (the clustered index was empty).
btr_pcur_detach(), btr_pcur_is_detached(): Unused functions, remove.
rb:804 approved by Inaam Rana
ibuf_insert_low(), the only caller of ibuf_set_entry_counter(), will
have latched an insert buffer bitmap page in bitmap_mtr before
invoking ibuf_set_entry_counter(). The latching order forbids any
further pages to be latched.
ibuf_set_entry_counter(): Renamed to ibuf_get_entry_counter(),
simplified the code and added comments.
Added the following symbols for predefined field numbers in change
buffer records:
#define IBUF_REC_FIELD_SPACE 0 /*!< in the pre-4.1 format,
the page number. later, the space_id */
#define IBUF_REC_FIELD_MARKER 1 /*!< starting with 4.1, a marker
consisting of 1 byte that is 0 */
#define IBUF_REC_FIELD_PAGE 2 /*!< starting with 4.1, the
page number */
#define IBUF_REC_FIELD_METADATA 3 /* the metadata field */
#define IBUF_REC_FIELD_USER 4 /* first user field */
rb:802 approved by Sunny Bains
Simplified fix avoiding changes to mysys:
Use the MY_HOLD_ORIGINAL_MODES flag when calling my_copy(),
this also stops it from attempting to chown() the file.
Yes this behavior is a bit confusing....
The only case this might change the behavior is if the destination file
exists, but since we also use MY_DONT_OVERWRITE_FILE, it would fail
in those cases anyway.
post-push fixes for show_slave_io_error= 1 of wait_for_slave_io_error.inc;
Unix and win format path specifically so few tests have to change show_slave_io_error
to zero.
The bug case is similar to one fixed earlier bug_49536.
Deadlock involving LOCK_log appears to be possible because the purge running thread
is holding LOCK_log whereas there is no sense of doing that and which fact was
exploited by the earlier bug fixes.
Fixed with small reengineering of rotate_and_purge(), adding two new methods and
setting up a policy to execute those instead of the former
rotate_and_purge(RP_LOCK_LOG_IS_ALREADY_LOCKED).
The policy for using rotate(), purge() is that if the caller acquires LOCK_log itself,
it should call rotate(), release the mutex and run purge().
Side effect of this patch is refining error message of bug@11747416 to print
the whole path.
row_rename_table_for_mysql(): Return DB_ERROR instead of DB_SUCCESS
when fil_rename_tablespace() returns an error. This bug was introduced
in the InnoDB Plugin.
Approved by Sunny Bains over IM.
NEW_FRM_MEM WITHOUT NEEDING TO".
During the process of opening tables for a statement, we allocated
memory which was used only during view loading even in cases when the
statement didn't use any views. Such an unnecessary allocation (and
corresponding freeing) might have caused significant performance
overhead in some workloads. For example, it caused up to 15% slowdown
in a simple stored routine calculating Fibonacci's numbers.
This memory was pre-allocated as part of "new_frm_mem" MEM_ROOT
initialization at the beginning of open_tables().
This patch addresses this issue by turning off memory pre-allocation
during initialization for this MEM_ROOT. Now, memory on this root
will be allocated only at the point when the first .FRM for a view is
opened.
The patch doesn't contain a test case since it is hard to test the
performance improvements or the absence of memory allocation in our
test framework.
TESTS: CRASH, CORRUPTION, 4G MEMOR
Issue: Valgrind errors due to checksum and optimize
query against archive tables with null columns.
Table record buffer was not initialized.
Solution: Initialize the record buffer.
BREAKS SOURCE RELEASE BUILD
Some of the required files were not getting copied while
performing 'make dist' and hence the build failed for
the created distribution source.
Added the missing files to Makefile.am.
TESTS: CRASH, CORRUPTION, 4G MEMOR
Issue: Valgrind errors due to checksum and optimize
query angaist archive tables with null columns.
Table record buffer was not initialized.
Solution: Initialize the record buffer.
