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66a32e8925
This is the main commit for Worklog tasks: * A more dynamic binlog format which allows small changes (1064) * Log session variables in Query_log_event (1063) Below 5.0 means 5.0.0. MySQL 5.0 is able to replicate FOREIGN_KEY_CHECKS, UNIQUE_KEY_CHECKS (for speed), SQL_AUTO_IS_NULL, SQL_MODE. Not charsets (WL#1062), not some vars (I can only think of SQL_SELECT_LIMIT, which deserves a special treatment). Note that this works for queries, except LOAD DATA INFILE (for this it would have to wait for Dmitri's push of WL#874, which in turns waits for the present push, so... the deadlock must be broken!). Note that when Dmitri pushes WL#874 in 5.0.1, 5.0.0 won't be able to replicate a LOAD DATA INFILE from 5.0.1. Apart from that, the new binlog format is designed so that it can tolerate a little variation in the events (so that a 5.0.0 slave could replicate a 5.0.1 master, except for LOAD DATA INFILE unfortunately); that is, when I later add replication of charsets it should break nothing. And when I later add a UID to every event, it should break nothing. The main change brought by this patch is a new type of event, Format_description_log_event, which describes some lengthes in other event types. This event is needed for the master/slave/mysqlbinlog to understand a 5.0 log. Thanks to this event, we can later add more bytes to the header of every event without breaking compatibility. Inside Query_log_event, we have some additional dynamic format, as every Query_log_event can have a different number of status variables, stored as pairs (code, value); that's how SQL_MODE and session variables and catalog are stored. Like this, we can later add count of affected rows, charsets... and we can have options --don't-log-count-affected-rows if we want. MySQL 5.0 is able to run on 4.x relay logs, 4.x binlogs. Upgrading a 4.x master to 5.0 is ok (no need to delete binlogs), upgrading a 4.x slave to 5.0 is ok (no need to delete relay logs); so both can be "hot" upgrades. Upgrading a 3.23 master to 5.0 requires as much as upgrading it to 4.0. 3.23 and 4.x can't be slaves of 5.0. So downgrading from 5.0 to 4.x may be complicated. Log_event::log_pos is now the position of the end of the event, which is more useful than the position of the beginning. We take care about compatibility with <5.0 (in which log_pos is the beginning). I added a short test for replication of SQL_MODE and some other variables. TODO: - after committing this, merge the latest 5.0 into it - fix all tests - update the manual with upgrade notes.
54 lines
2.4 KiB
Makefile
54 lines
2.4 KiB
Makefile
# Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# This file is public domain and comes with NO WARRANTY of any kind
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#AUTOMAKE_OPTIONS = nostdinc
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INCLUDES = -I$(top_srcdir)/include $(openssl_includes)
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LIBS = @CLIENT_LIBS@
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LDADD = @CLIENT_EXTRA_LDFLAGS@ ../libmysql/libmysqlclient.la
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bin_PROGRAMS = mysql mysqladmin mysqlcheck mysqlshow \
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mysqldump mysqlimport mysqltest mysqlbinlog mysqlmanagerc mysqlmanager-pwgen
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noinst_HEADERS = sql_string.h completion_hash.h my_readline.h \
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client_priv.h
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mysql_SOURCES = mysql.cc readline.cc sql_string.cc completion_hash.cc
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mysql_LDADD = @readline_link@ @TERMCAP_LIB@ $(LDADD) $(CXXLDFLAGS)
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mysqlbinlog_LDADD = $(LDADD) $(CXXLDFLAGS)
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mysql_DEPENDENCIES= $(LIBRARIES) $(pkglib_LTLIBRARIES)
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mysqladmin_DEPENDENCIES= $(LIBRARIES) $(pkglib_LTLIBRARIES)
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mysqlcheck_DEPENDENCIES= $(LIBRARIES) $(pkglib_LTLIBRARIES)
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mysqlshow_DEPENDENCIES= $(LIBRARIES) $(pkglib_LTLIBRARIES)
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mysqldump_DEPENDENCIES= $(LIBRARIES) $(pkglib_LTLIBRARIES)
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mysqlimport_DEPENDENCIES= $(LIBRARIES) $(pkglib_LTLIBRARIES)
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mysqltest_SOURCES= mysqltest.c
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mysqltest_DEPENDENCIES= $(LIBRARIES) $(pkglib_LTLIBRARIES)
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mysqlbinlog_SOURCES = mysqlbinlog.cc ../mysys/mf_tempdir.c
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mysqlbinlog_DEPENDENCIES= $(LIBRARIES) $(pkglib_LTLIBRARIES)
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mysqlmanagerc_SOURCES = mysqlmanagerc.c
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mysqlmanagerc_DEPENDENCIES= $(LIBRARIES) $(pkglib_LTLIBRARIES)
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sql_src=log_event.h mysql_priv.h log_event.cc
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# Fix for mit-threads
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DEFS = -DUNDEF_THREADS_HACK
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link_sources:
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for f in $(sql_src) ; do \
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rm -f $(srcdir)/$$f; \
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@LN_CP_F@ $(top_srcdir)/sql/$$f $(srcdir)/$$f; \
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done;
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# Don't update the files from bitkeeper
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%::SCCS/s.%
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