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.
added new variable for ndb port 1186
changed meaning of ndb_port_base to be default tcp port setting
changed to use split between port and port_base for ndbcluster
so that ndb_port and ndb_port_base are propagated to startscript for ndbcluster
added larger space to pid print
moved readAndExecute out of CommandInterpreter to avoid linking lib with readline
added c-api to Ndb_mgmclient
pass also ndb_port to make
DROP DATABASE failed because of file ext not in TYPELIB of known extensions.
General solution - construct a TYPELIB at runtime instead of a static list.
the result takes its charset/collation
attributes from the character string,
e.g. SELECT func(NULL, _latin2'string')
now returns a latin2 result. This is
done by introducing a new derivation
(aka coercibility) level DERIVATION_IGNORABLE,
which is used with Item_null.
2. 'Pure' NULL is now BINARY(0), not CHAR(0).
I.e. NULL is now more typeless.
not know there's rollback (if it's because of a dupl row), better warn
that it's happening. It can also be of use for a DBA killing a
connection and wondering what this connection is still doing now. Example:
| 5 | root | localhost | test | Killed | 10 | Rolling back | insert into i select * from j |
Bug #6479 ALTER TABLE ... changing charset fails for TEXT columns
Fix: use do_conv_blob rather than do_copy_blob
if the column's character sets are different.
created new facade object for CommandInterpreter
removed CPC #if 0 code
removed editline from mgmtsrver, no replace with readline since interface is obsolete anyways
1) fix so that missing blob tables don't prevent table from being
dropped
2) decrease size of blob part if record length exceeds max length
3) add test case for table wo/ corresponding blob table
4) init scan counters when sending scan_tabreq
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
Included header fnmatch.h on Unix
Changed C++ comments to C comments
Corrected indentation of code written on Windows
Split up lines to fit into 80 columns
Initiated some variables to avoid warnings
Added __attribute__((unused)) to unused function parameters
Replace tab characters with space
Put space after 'for', 'while' etc
Added value to 'return' from non void function removef()
On Unix strlwr() was incorrectly declared and a no op,
replaced it with a macro that does nothing
Split several statements on the same line
Other minor changes to conform to coding standard
