Problem with test is that test causes OS failures that change.
Idea with test is just to test that server does not crash, no other
output is necessary.
after Operating system error number 36 in a file operation.
Analysis: os_file_get_status did not handle error ENAMETOOLONG
correctly.
Fix: Add correct handling for error ENAMETOOLONG. Note that on InnoDB
case the error is not passed all the way up to server. That would
be bigger rewamp.
innodb.innodb_stats_drop_locked fail and
innodb.innodb_stats_fetch_nonexistent fails in buildbot on Windows
Analysis: Problem is that innodb_stats_create_on_corrupted
test renames mysql.innodb.index_stats and all the rest
are dependend on this table.
Fix: After rename back to original, restart mysqld to
make sure that table is correct.
Merged Facebook commit dd2d11be7aaf3be270e740fb95cbc4eacb52f4d7
authored by Rongrong Zhong from https://github.com/facebook/mysql-5.6
This fixes MySQL Bug #68220 innodb_rows_updated is misleading on slave
http://bugs.mysql.com/bug.php?id=68220
Added innodb_system_rows_read/inserted/updated/deleted counters
that are the equivalent of innodb_rows_* but that only account for
changes made to system databases (mysql, information_schame and
preformance_schema). These counters will be used on slaves to
differentiated the updates made on system databases from those made on
user databases.
innodb_rows_* status counters are not updated when innodb_system_rows_*
are updated.
dd2d11be7a
~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
Analysis: For some reason table stats for a table pointed from a index
is not initialized. Added additional warning output on this situation
and table stats initialization. This is better than asserting.
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)
SLOW/CRASHES SEMAPHORE
Problem:
There are 2 lakh tables - fk_000001, fk_000002 ... fk_200000. All of them
are related to the same parent_table through a foreign key constraint.
When the parent_table is loaded into the dictionary cache, all the child table
will also be loaded. This is taking lot of time. Since this operation happens
when the dictionary latch is taken, the scenario leads to "long semaphore wait"
situation and the server gets killed.
Analysis:
A simple performance analysis showed that the slowness is because of the
dict_foreign_find() function. It does a linear search on two linked list
table->foreign_list and table->referenced_list, looking for a particular
foreign key object based on foreign->id as the key. This is called two
times for each foreign key object.
Solution:
Introduce a rb tree in table->foreign_rbt and table->referenced_rbt, which
are some sort of index on table->foreign_list and table->referenced_list
respectively, using foreign->id as the key. These rbt structures will be
solely used by dict_foreign_find().
rb#5599 approved by Vasil
on select from I_S.INNODB_CHANGED_PAGES
Analysis: limit_lsn_range_from_condition() incorrectly parses
start_lsn and/or end_lsn conditions.
Fix from SergeyP. Added some test cases.
- Change the default flag value to ON.
- Update the testcases to be run extended_keys=ON:
= trivial test result updates
= If extended_keys setting makes a difference for a testcase, run the testcase
with extended_keys=off. There were only a few such cases
- Update to vcol_select_innodb looks like a worse plan but it will be gone in 10.0.
FAILING ASSERTION: FLEN == LEN
Problem:
Broken invariant triggered when building a unique index on a
binary column and the input data contains duplicate keys. This was broken
in debug builds only.
Fix:
Fixed length of the binary datatype can be greater than length of
the shorter prefix on which index is being created.
mysql-test/suite/innodb/r/row_lock.result:
Test case for MDEV-5629
mysql-test/suite/innodb/t/row_lock.test:
Test case for MDEV-5629
sql/filesort.cc:
Don't call unlock_row() in case of errors
Problem:
In the clustered index, when an update operation is done the overall
scenario (after rb#4479) is as follows:
1. Delete mark the old record that is to be updated.
2. The old record disowns the blobs.
3. Insert the new record into clustered index.
4. For non-updated blobs, new record must own it. Verified by assert.
5. For non-updated blobs, in new record marked as inherited.
Scenario involving DB_LOCK_WAIT:
If step 3 times out, then we will skip 1 and 2 and will continue from
step 3. This skipping is achieved by the UPD_NODE_INSERT_BLOB state.
In this case, step 4 is not correct. Because of step 1, the new
record need not own the blobs. Hence the assert failure.
Solution:
The assert in step 4 is removed. Instead code is added to ensure that
the record owns the blob.
Note:
This is a regression caused by rb#4479.
rb#4571 approved by Marko
AUTO_INCREMENT_INCREMENT
Problem:
=======
When auto_increment_increment system variable decreases,
immediate next value of auto increment column is not affected.
Solution:
========
Get the previous inserted value of auto increment column by
subtracting the previous auto_increment_increment from next
auto increment value. After that calculate the current autoinc value
using newly changed auto_increment_increment variable.
Approved by Sunny [rb#4394]
Syntax. Server support. Test cases.
InnoDB bugfixes:
* don't mess around with system sprintf's, always use my_error() for errors.
* don't use InnoDB internal error codes where OS error codes are expected.
* don't say "file not found", when it was.
Update InnoDB to 5.6.14
Apply MySQL-5.6 hack for MySQL Bug#16434374
Move Aria-only HA_RTREE_INDEX from my_base.h to maria_def.h (breaks an assert in InnoDB)
Fix InnoDB memory leak
Problem:
The function row_upd_changes_ord_field_binary() is used to decide whether to
use row_upd_clust_rec_by_insert() or row_upd_clust_rec(). The function
row_upd_changes_ord_field_binary() does not make use of charset information.
Based on binary comparison it decides that r1 and r2 differ in their ordering
fields.
In the function row_upd_clust_rec_by_insert(), an update is done by delete +
insert. These operations internally make use of cmp_dtuple_rec_with_match()
to compare records r1 and r2. This comparison takes place with the use of
charset information.
This means that it is possible for the deleted record to be reused in the
subsequent insert. In the given scenario, the characters 'a' and 'A' are
considered equal in the my_charset_latin1. When this happens, the ownership
information of externally stored blobs are not correctly handled.
Solution:
When an update is done by delete followed by insert, disown the relevant
externally stored fields during the delete marking itself (within the same
mtr). If the insert succeeds, then nothing with respect to blob ownership
needs to be done. If the insert fails, then the disown done earlier will be
removed when the operation is rolled back.
rb#4479 approved by Marko.
