binlog coordinates corresponding to the dump".
The good news is that now mysqldump can be used to get an online backup of InnoDB *which works for
point-in-time recovery and replication slave creation*. Formerly, mysqldump --master-data --single-transaction
used to call in fact mysqldump --master-data, so the dump was not an online dump (took big lock all time of dump).
The only lock which is now taken in this patch is at the beginning of the dump: mysqldump does:
FLUSH TABLES WITH READ LOCK; START TRANSACTION WITH CONSISTENT SNAPSHOT; SHOW MASTER STATUS; UNLOCK TABLES;
so the lock time is in fact the time FLUSH TABLES WITH READ LOCK takes to return (can be 0 or very long, if
a table is undergoing a huge update).
I have done some more minor changes listed in the paragraph of mysqldump.c.
WL#2237 "WITH CONSISTENT SNAPSHOT clause for START TRANSACTION":
it's a START TRANSACTION which additionally starts a consistent read on all
capable storage engine (i.e. InnoDB). So, can serve as a replacement for
BEGIN; SELECT * FROM some_innodb_table LIMIT 1; which starts a consistent read too.
Revise the --hex-blob help message string. (This will need
revising after merge to 4.1, too, but the CHAR BINARY and
VARCHAR BINARY data types will be BINARY and VARBINRY.)
Now thd->mem_root is a pointer to thd->main_mem_root and THR_MALLOC is a pointer to thd->mem_root.
This gives us the following benefits:
- Allow us to easily detect if arena has already been swapped before (this fixes a bug in setup_conds() where arena was swaped twice in some cases)
- Faster swaps of arenas (as we don't have to copy the whole MEM_ROOT)
- We don't anymore have to call my_pthread_setspecific_ptr(THR_MALLOC,...) to change where memory is alloced. Now it's enough to set thd->mem_root
- 'mysqldump --help' comment that --xeh-blob
doesn't work with --extended-inserts was removed.
It does work now. Thanks to Lachlan
who noticed this wrong help message.
- Switched to use the recently introduced
mysql_hex_string() instead of slow sprintf().
Thanks to Sinisa for the idea.
- 'mysqldump --hex-blob' dumps in HEX not only
BLOBs but also BINARY(x) columns.
Thanks to Paul.
FOUND is not a reserved keyword anymore
Added Item_field::set_no_const_sub() to be able to mark fields that can't be substituted
Added 'simple_select' method to be able to quickly determinate if a select_result is a normal SELECT
Note that the 5.0 tree is not yet up to date: Sanja will have to fix multi-update-locks for this merge to be complete
Added protocol::flush() for easier embedded-server code
Increase block allocation variables a bit as they where a bit too small for MySQL 4.1
Added option --silent to client_test
WL#2067 add features to mysqltest: "disable_error_abort" + "$mysql_errno"
$mysql_errno is a new builtin variable of mysqltest and contains the
return code of the last command send to the server.
"--disable_abort_on_error" switches the abort of mysqltest
after "unmasked" failing statements off.
"--enable_abort_on_error" switches the abort of mysqltest
after "unmasked" failing statements on. (default)
"Maskings" are
!$<error number> and --error <error number>
in the line before the statement to be checked.
The benefit of the option "--disable_abort_on_error" is that
- all statements after the failing statement are executed
- a r/<test>.reject will be produced
- it is possible to write test cases, which perform
code sequences depending on the return code of a single
statement
New mysqltest that can run mysqltest with PS
Added support for ZEROFILL in PS
Fixed crash when one called mysql_stmt_store_result() without a preceding mysql_stmt_bind_result()
Updated test cases to support --ps-protocol
(Some tests are still run using old protocol)
Fixed crash in PS when using SELECT * FROM t1 NATURAL JOIN t2...
Fixed crash in PS when using sub queries
Create table didn't signal when table was created. This could cause a "DROP TABLE created_table" in another thread to wait "forever"
Fixed wrong permissions check in PS and multi-table updates (one could get permission denied for legal quries)
Fix for PS and SELECT ... PROCEDURE
Reset all warnings when executing a new PS query
group_concat(...ORDER BY) didn't work with PS
Fixed problem with test suite when not using innodb
Simple optimzations and cleanups
Removed compiler warnings and fixed portability issues
Added client functions 'mysql_embedded()' to allow client to check if we are using embedded server
Fixes for purify
Original code was checking ! unix_socket for local_file flag. This doesn't work and so was removed. Now
to import a local file, you must use the --local command line option.
mysqlimport.c:
Removed check of unix_socket to set local_file
Under strict mode MySQL will generate an error message if there was any conversion when assigning data to a field.
Added checking of date/datetime fields.
If strict mode, give error if we have not given value to field without a default value (for INSERT)
Run client_test as a testcase
new file
mysql-test-run.sh:
More clearly report failure if --force, also exit 1
client_test.c:
Use MAXPATHLEN in test_frm_bug()
Renable test cases disabled for running from mysql-test-run
mysqltest.c:
Don't check errno from popen, may not be set
Added timing output for each test case.
Added --embedded-server option.
mysqltest.c:
Added 'start_timer', 'end_timer' commands
Makefile.am:
Include mysys/my_getsystime.c to get time function in mysqltest
Many files:
new file
Return exit(1) instead of exit(0) on failure.
Allow longer path names using MAXPATHLEN.
Added option --testcase that skips some failing tests.
Replaced 'return' with exit(1) in test_frm_bug().
mysqltest.c:
Let --exec fail if command fails
