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It is well-known that due to concurrency issues, a slave can become
inconsistent when a transaction contains updates to both transaction and
non-transactional tables in statement and mixed modes.
In a nutshell, the current code-base tries to preserve causality among the
statements by writing non-transactional statements to the txn-cache which
is flushed upon commit. However, modifications done to non-transactional
tables on behalf of a transaction become immediately visible to other
connections but may not immediately get into the binary log and therefore
consistency may be broken.
In general, it is impossible to automatically detect causality/dependency
among statements by just analyzing the statements sent to the server. This
happen because dependency may be hidden in the application code and it is
necessary to know a priori all the statements processed in the context of
a transaction such as in a procedure. Moreover, even for the few cases that
we could automatically address in the server, the computation effort
required could make the approach infeasible.
So, in this patch we introduce the option
- "--binlog-direct-non-transactional-updates" that can be used to bypass
the current behavior in order to write directly to binary log statements
that change non-transactional tables.
mysql-test/extra/rpl_tests/rpl_mixing_engines.inc:
Backported this from Celosia to improve the test cases related to the NTM issue.
sql/log.cc:
Checks the --binlog-direct-non-transactional-updates before choosing
to either use the trxn-cache or not.
sql/mysqld.cc:
Introduces the option --binlog-direct-non-transactional-updates.
sql/set_var.cc:
Introduces the option --binlog-direct-non-transactional-updates.
sql/sql_class.h:
Introduces the option --binlog-direct-non-transactional-updates.
230 lines
7.3 KiB
Text
230 lines
7.3 KiB
Text
################################################################################
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# This test case checks if the option "binlog-direct-non-transactional-updates"
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# makes non-transactional changes in the statement format to be written to the
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# binary log as soon as the statement commits.
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#
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# In what follows, we use the include file rpl_mixing_engines.inc to generate
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# sql commands from a format string. The format string consists of a sequence of
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# 'codes' separated by spaces. Before it set of commands, we paste the expected
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# sequence in the binary log. The following codes exist:
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#
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# - Define the scope of a transaction:
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# B - Begin.
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# C - Commit.
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# R - Rollback.
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#
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# - Change only T-Tables:
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# T - Updates a T-Table.
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# T-trig - Updates T-Tables through a trigger.
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# T-func - Updates T-Tables through a function.
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# T-proc - Updates T-Tables through a procedure.
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# eT - Fails while updating the first tuple in a T-Table.
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# Te - Fails while updating an n-tuple (n > 1) in a T-Table.
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# Te-trig - Fails while updating an n-tuple (n > 1) in a T-Table.
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# Te-func - Fails while updating an n-tuple (n > 1) in a T-Table.
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#
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# - Change only N-Tables
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# N - Updates a N-Table.
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# N-trig - Updates N-Tables through a trigger.
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# N-func - Updates N-Tables through a function.
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# N-proc - Updates N-Tables through a procedure.
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# eN - Fails while updating the first tuple in a N-Table.
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# Ne - Fails while updating an n-tuple (n > 1) in a N-Table.
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# Ne-trig - Fails while updating an n-tuple (n > 1) in a N-Table.
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# Ne-func - Fails while updating an n-tuple (n > 1) in a N-Table.
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################################################################################
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--source include/have_binlog_format_statement.inc
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--source include/master-slave.inc
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--source include/have_innodb.inc
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set @@session.binlog_direct_non_transactional_updates= TRUE;
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--echo #########################################################################
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--echo # CONFIGURATION
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--echo #########################################################################
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--let $engine_type= Innodb
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SET @commands= 'configure';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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--echo #########################################################################
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--echo # 1 - BINLOG ORDER
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--echo #########################################################################
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connection master;
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--echo
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--echo
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--echo
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--echo
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--echo #
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--echo #3) Generates in the binlog what follows:
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--echo # --> STMT "N B T C" entries, format S.
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--echo #
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SET @commands= 'B T N C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T N-trig C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T N-func C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T N-proc C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-trig N C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-trig N-trig C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-trig N-func C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-trig N-proc C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-func N C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-func N-trig C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-func N-func C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-func N-proc C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-proc N C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-proc N-trig C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-proc N-func C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-proc N-proc C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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--echo
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--echo
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--echo
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--echo
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--echo #
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--echo #3.e) Generates in the binlog what follows if T-* fails:
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--echo # --> STMT "N" entry, format S.
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--echo # Otherwise, what follows if N-* fails and a N-Table is changed:
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--echo # --> STMT "N B T C" entries, format S.
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--echo #
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SET @commands= 'B eT N C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B Te N C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T eN C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T Ne C';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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--echo
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--echo
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--echo
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--echo
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--echo #
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--echo #4) Generates in the binlog what follows:
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--echo # --> STMT "N B T R" entries, format S.
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--echo #
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SET @commands= 'B T N R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T N-trig R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T N-func R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T N-proc R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-trig N R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-trig N-trig R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-trig N-func R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-trig N-proc R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-func N R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-func N-trig R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-func N-func R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-func N-proc R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-proc N R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-proc N-trig R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-proc N-func R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T-proc N-proc R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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--echo
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--echo
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--echo
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--echo
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--echo #
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--echo #4.e) Generates in the binlog what follows if T* fails:
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--echo # --> STMT "B N C" entry, format S.
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--echo # Otherwise, what follows if N* fails and a N-Table is changed:
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--echo # --> STMT "N" entries, format S.
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--echo #
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SET @commands= 'B eT N R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B Te N R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T eN R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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SET @commands= 'B T Ne R';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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--echo ###################################################################################
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--echo # CHECK CONSISTENCY
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--echo ###################################################################################
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connection master;
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sync_slave_with_master;
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--exec $MYSQL_DUMP --compact --order-by-primary --skip-extended-insert --no-create-info test > $MYSQLTEST_VARDIR/tmp/test-nmt-master.sql
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--exec $MYSQL_DUMP_SLAVE --compact --order-by-primary --skip-extended-insert --no-create-info test > $MYSQLTEST_VARDIR/tmp/test-nmt-slave.sql
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--diff_files $MYSQLTEST_VARDIR/tmp/test-nmt-master.sql $MYSQLTEST_VARDIR/tmp/test-nmt-slave.sql
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--echo ###################################################################################
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--echo # CLEAN
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--echo ###################################################################################
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SET @commands= 'clean';
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--source extra/rpl_tests/rpl_mixing_engines.inc
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