Bug #23667 "CREATE TABLE LIKE is not isolated from alteration
by other connections"
Bug #18950 "CREATE TABLE LIKE does not obtain LOCK_open"
As well as:
Bug #25578 "CREATE TABLE LIKE does not require any privileges
on source table".
The first and the second bugs resulted in various errors and wrong
binary log order when one tried to execute concurrently CREATE TABLE LIKE
statement and DDL statements on source table or DML/DDL statements on its
target table.
The problem was caused by incomplete protection/table-locking against
concurrent statements implemented in mysql_create_like_table() routine.
We solve it by simply implementing such protection in proper way.
Most of actual work for 5.1 was already done by fix for bug 20662 and
preliminary patch changing locking in ALTER TABLE.
The third bug allowed user who didn't have any privileges on table create
its copy and therefore circumvent privilege check for SHOW CREATE TABLE.
This patch solves this problem by adding privilege check, which was missing.
Finally it also removes some duplicated code from mysql_create_like_table()
and thus fixes bug #26869 "TABLE_LIST::table_name_length inconsistent with
TABLE_LIST::table_name".
It was later disabled because the test failed with timeout on one testing box.
The reason for this failing test could not be found because we do not have informations about the conditions on the box during this test.
Jeb and I tried this test on other boxes and it passed.
My experience is that
- tests using NDB need in general often significant more runtime
than comparable tests of other storage engines
- the actual load of the box where the test is running and the
filesystem (nfs could be extreme slow) where the tests are
executed might have a huge impact on the test performance
(runtime * 2 till 3)
- there are sometimes problems with the ports most probably
caused by OS properties (NDB+RPL need many ports) or
parallel tests accidently running with the same ports.
AFAIK these are the reasons why the NDB tests fail sometimes with timeout.
Conclusion: We enable rpl_ndb_ddl again because the failure happens in rare cases
and seems not to be caused by errors within the server or test code.
Change to use remove_file instead of 'system rm' in a lot of tests. (Should fix some windows test problems)
Removed memory leak in mysql_test if sync_with_master fails.
Do not terminate ndb_cluster_binary_log before the util thread has finnished. This should fix a shutdown bug where a thread is accessing injector_mutex after it's freed.
Patch may fix Bug#27622 "mysqld shutdown, util thread continues, while binlog thread exits"
1. Fixes within the testscripts (affects rpl_ddl.test and rpl_ndb_ddl.test)
- slave connection is only an observer (-> AUTOCOMMIT = 0)
This removes the problem with the hanging test around DROP DATABASE (NDB). The hanging test around DROP DATABASE is a difference to InnoDB/MyISAm behaviour but fare
away of a clear bug. IMHO this behaviour does not violate the SQL standard and should be therefore simply accepted.
- removal of wrong comments
- CREATE/DROP TEMPORARY TABLE must not cause implicit commit of the current transaction.
NDB behaves here correct and InnoDB/Falcon wrong.
- Add a missing connection slave
- Reenable the test rpl_ndb_ddl.
2. Disable rpl_ddl.test because of Bug#26418.
3. Reenable rpl_ndb_ddl.test
4. Improvements (affect rpl_ddl.test and rpl_ndb_ddl.test)
- Better + extended comments which should prevent that somebody accidently destroys the logics of the test
- Replace SELECT's printing comments by "--echo" (decreases the number of auxiliary SQL commands)
- Remove the need for include/rpl_stmt_seq2.inc (was mostly redundant to rpl_stmt_seq.inc)
- Remove extra/rpl_tests/rpl_ndb_ddl.test (corrected extra/rpl_tests/rpl_ddl.test is sufficient)
- Shift assignment of values to $show_binlog, $manipulate (variables useful for debugging) into the toplevel scripts
- The temporary tables get now their storage engine from the variable $temp_engine_type. (more deterministic testing conditions)
- Add additional protocol line if the connection is switched (was partially missing)
- Add two DML commands for comparison purposes
"INSERT... ON DUPLICATE KEY UPDATE skips auto_increment values"
didn't make it into 5.0.36 and 5.1.16,
so we need to adjust the bug-detection-based-on-version-number code.
Because the rpl tree has a too old version, rpl_insert_id cannot pass,
so I disable it (like is already the case in 5.1-rpl for the same reason),
and the repl team will re-enable it when they merge 5.0 and 5.1 into
their trees (thus getting the right version number).
Fixed compile-pentium64 scripts
Fixed wrong estimate of update_with_key_prefix in sql-bench
Merge bk-internal.mysql.com:/home/bk/mysql-5.1 into mysql.com:/home/my/mysql-5.1
Fixed unsafe define of uint4korr()
Fixed that --extern works with mysql-test-run.pl
Small trivial cleanups
This also fixes a bug in counting number of rows that are updated when we have many simultanous queries
Move all connection handling and command exectuion main loop from sql_parse.cc to sql_connection.cc
Split handle_one_connection() into reusable sub functions.
Split create_new_thread() into reusable sub functions.
Added thread_scheduler; Preliminary interface code for future thread_handling code.
Use 'my_thread_id' for internal thread id's
Make thr_alarm_kill() to depend on thread_id instead of thread
Make thr_abort_locks_for_thread() depend on thread_id instead of thread
In store_globals(), set my_thread_var->id to be thd->thread_id.
Use my_thread_var->id as basis for my_thread_name()
The above changes makes the connection we have between THD and threads more soft.
Added a lot of DBUG_PRINT() and DBUG_ASSERT() functions
Fixed compiler warnings
Fixed core dumps when running with --debug
Removed setting of signal masks (was never used)
Made event code call pthread_exit() (portability fix)
Fixed that event code doesn't call DBUG_xxx functions before my_thread_init() is called.
Made handling of thread_id and thd->variables.pseudo_thread_id uniform.
Removed one common 'not freed memory' warning from mysqltest
Fixed a couple of usage of not initialized warnings (unlikely cases)
Suppress compiler warnings from bdb and (for the moment) warnings from ndb
