Views weren't sync()d the same way other structures were.
In creating the FRM for views, obey the same rules for variable
"sync_frm" as for everything else.
The problem is that the query cache stores packets containing
the server status of the time when the cached statement was run.
This might lead to a wrong transaction status in the client side
if a statement is cached during a transaction and is later served
outside a transaction context (and vice-versa).
The solution is to take into account the transaction status when
storing in and serving from the query cache.
The default "awk" there cannot handle some of the scripts
which are used by BDB for configuration.
The fix:
1) Introduce a variable "AWK" in some of the BDB shell scripts,
2) search "gawk" and give it precedence over "awk"
when assigning a value to the "AWK" variable,
fail if neither is found,
3) use that variable when calling an "awk" program with one
of the critical scripts.
The perfect solution would be to use the "awk" program found
by "configure", but we cannot follow that approach because
BDB's configuration is handled as a special case before the
overall "configure" is run. Because of this,
1) the "configure" result isn't yet available,
2) "configure" will not handle these BDB files.
Searching "gawk" is a (not-so-nice) way out.
Note that all this need not be perfectly portable,
it is needed only when we create a source distribution tarball
from a develkopment tree.
The greedy optimizer tracks the current level of nested joins and the position
inside these by setting and maintaining a state that's global for the whole FROM
clause.
This state was correctly maintained inside the selection of the next partial plan
table (in best_extension_by_limited_search()).
greedy_search() also moves the current position by adding the last partial match
table when there's not enough tables in the partial plan found by
best_extension_by_limited_search().
This may require update of the global state variables that describe the current
position in the plan if the last table placed by greedy_search is not a top-level
join table.
Fixed by updating the state after placing the partial plan table in greedy_search()
in the same way this is done on entering the best_extension_by_limited_search().
Fixed the signature of the function called to update the state :
check_interleaving_with_nj
Bug #39920: MySQL cannot deal with Leap Second expression in string literal.
Updated MySQL time handling code to react correctly on UTC leap second additions.
MySQL functions that return the OS current time, like e.g. CURDATE(), NOW() etc
will return :59:59 instead of :59:60 or 59:61.
As a result the reader will receive :59:59 for 2 or 3 consecutive seconds
during the leap second.
Original changesets:
> revision-id: kgeorge@mysql.com-20081201141835-rg8nnnadujj5wl9f
> parent: gshchepa@mysql.com-20081114172557-xh0jlzwal8ze3cy6
> committer: Georgi Kodinov <kgeorge@mysql.com>
> branch nick: B39920-5.0-bugteam
> timestamp: Mon 2008-12-01 16:18:35 +0200
> revision-id: kgeorge@mysql.com-20081201154106-c310zzy5or043rqa
> parent: kgeorge@mysql.com-20081201145656-6kjq91oga5nxbbob
> committer: Georgi Kodinov <kgeorge@mysql.com>
> branch nick: B39920-merge-5.0-bugteam
> timestamp: Mon 2008-12-01 17:41:06 +0200
Bug#34760 Character set autodetection appears to fail
the problem is the same as reported in bug#20835,
so the fix is backport of bug#20835 patch.
Original changeset:
> revision-id: sergey.glukhov@sun.com-20081121123959-58ffhp2nitg7f40h
> parent: ramil@mysql.com-20081120100836-gct60cm67b1rui29
> committer: Sergey Glukhov <Sergey.Glukhov@sun.com>
> branch nick: mysql-5.0-bugteam
> timestamp: Fri 2008-11-21 16:39:59 +0400
When substituting system constant functions with a constant result
the server was not expecting that the function may return NULL.
Fixed by checking for NULL and returning Item_null (in the relevant
collation) if the result of the system constant function was NULL.
Passing dubious "year zero" in non-zero date (not "0000-00-00") could
lead to negative value for year internally, while variable was unsigned.
This led to Really Bad Things further down the line.
Now doing calculations with signed type for year internally.
Added function to check for diff and return an error message if the utility is not present.
Previously, the way we did this didn't work on Windows, but did work on *Nix systems.
Added global status variable 'Queries' which represents
total amount of queries executed by server including
statements executed by SPs.
note: It's old behaviour of 'Questions' variable.
Table could be marked dependent because it is
either 1) an inner table of an outer join, or 2) it is a part of
STRAIGHT_JOIN. In case of STRAIGHT_JOIN table->maybe_null should not
be assigned. The fix is to set st_table::maybe_null to 'true' only
for those tables which are used in outer join.
The problem is that we cannot insert new record into memory table
when table size exceeds max memory table size.
The fix is to use schema_table_store_record() function which
converts memory table into MyISAM in case of table size exceeding.
Note:
There is no test case for this bug, the reason is that
1. The code that was added already is checked(i.e. works) with existing tests
2. Correct work of schema_table_store_record() is checked with other test cases
(information_schema tests)
So new code is fully covered with existing test cases.
The MONTHNAME/DAYNAME functions
returns binary string, so the LOWER/UPPER functions
are not effective on the result of MONTHNAME/DAYNAME call.
Character set of the MONTHNAME/DAYNAME function
result has been changed to connection character set.
- QUICK_INDEX_MERGE_SELECT deinitializes its rnd_pos() scan when it reaches EOF, but we
need to make the deinitialization in QUICK_INDEX_MERGE_SELECT destructor also. This is because
certain execution strategies can stop scanning without reaching EOF, then then try to do a full
table scan on this table. Failure to deinitialize caused the full scan to use (already empty)
table->sort and produce zero records.
branches/5.0 bug#39483 InnoDB hang on adaptive hash because of out
of order ::open() call by MySQL
Under some conditions MySQL calls ::open with search_latch leading
to a deadlock as we try to acquire dict_sys->mutex inside ::open
breaking the latching order. The fix is to release search_latch.
Reviewed by: Heikki
This fixes Bug#36149: Read buffer overflow in srv0start.c found during "make
test"
Per-revision comments:
r2484 | vasil | 2008-05-28 15:32:48 +0300 (Wed, 28 May 2008) | 9 lines
Fix Bug#36149 Read buffer overflow in srv0start.c found during "make test"
Use strncmp(3) instead of memcmp(3) to avoid reading past end of the string
if it is empty (*str == '\0'). This bug is _not_ a buffer overflow.
Discussed with: Sunny (via IM)
r2538 | inaam | 2008-07-15 21:24:02 +0300 (Tue, 15 Jul 2008) | 15 lines
Fix of issue# 4
Fixed a timing hole where a thread dropping an index can free the
in-memory index struct while another thread is still using
that structure to remove entries from adaptive hash index belonging
to one of the pages that belongs to the index being dropped.
The fix is to have a reference counter in the index struct and to
wait for this counter to drop to zero beforing freeing the struct.
Reviewed by: Heikki
r2544 | inaam | 2008-07-22 18:58:11 +0300 (Tue, 22 Jul 2008) | 8 lines
Removed UNIV_INLINE qualifier from btr_search_info_get_ref_count().
Otherwise compilation failed on non-debug builds.
Pointed by: Vasil
not handle errors from gettimeofday".
r2475 | vasil | 2008-05-22 19:35:30 +0300 (Thu, 22 May 2008) | 13 lines
Fix by retrying gettimeofday() several times if it fails in ut_usectime().
If it fails on all calls then return error to the caller to be handled
at higher level.
Update the variable innodb_row_lock_time_max in SHOW STATUS output only
if ut_usectime() was successful.
