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Non-transactional updates that take place inside a transaction present problems for logging because they are visible to other clients before the transaction is committed, and they are not rolled back even if the transaction is rolled back. It is not always possible to log correctly in statement format when both transactional and non-transactional tables are used in the same transaction. In the current patch, we ensure that such scenario is completely safe under the ROW and MIXED modes.
100 lines
3.4 KiB
Text
100 lines
3.4 KiB
Text
# PURPOSE. Test that blackhole works with replication in all three
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# modes: STATEMENT, MIXED, and ROW.
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#
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# METHOD. We start by creating a table on the master and then change
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# the engine to use blackhole on the slave.
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#
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# After insert/update/delete of one or more rows, the test the
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# proceeds to check that replication is running after replicating an
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# change, that the blackhole engine does not contain anything (which
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# is just a check that the correct engine is used), and that something
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# is written to the binary log.
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#
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# Whe check INSERT, UPDATE, and DELETE statement for tables with no
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# key (forcing a range search on the slave), primary keys (using a
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# primary key lookup), and index/key with multiple matches (forcing an
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# index search).
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source include/master-slave.inc;
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source include/have_blackhole.inc;
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call mtr.add_suppression("Unsafe statement binlogged in statement format since BINLOG_FORMAT = STATEMENT");
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# We start with no primary key
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CREATE TABLE t1 (a INT, b INT, c INT);
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CREATE TABLE t2 (a INT, b INT, c INT);
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sync_slave_with_master;
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ALTER TABLE t1 ENGINE=BLACKHOLE;
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connection master;
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INSERT INTO t2 VALUES (1,9,1), (2,9,2), (3,9,3), (4,9,4);
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sync_slave_with_master;
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# Test insert, no primary key
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let $statement = INSERT INTO t1 VALUES (1,1,1),(2,1,2),(3,1,3),(4,1,4);
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source extra/rpl_tests/rpl_blackhole.test;
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# Test update, no primary key
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let $statement = UPDATE t1 SET c = 2*c WHERE a % 2 = 0 AND b = 1;
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source extra/rpl_tests/rpl_blackhole.test;
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# Test delete, no primary key
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let $statement = DELETE FROM t1 WHERE a % 2 = 0 AND b = 1;
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source extra/rpl_tests/rpl_blackhole.test;
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# Test INSERT-SELECT into Blackhole, no primary key
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let $statement = INSERT INTO t1 SELECT * FROM t2;
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source extra/rpl_tests/rpl_blackhole.test;
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#
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# The MASTER has MyISAM as the engine for both tables. The SLAVE has Blackhole
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# on t1 (transactional engine) and MyISAM on t2 (non-transactional engine).
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#
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# In MIXED mode, the command "INSERT INTO t2 SELECT * FROM t1" is logged as
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# statement on the master. On the slave, it is tagged as unsafe because the
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# statement mixes both transactional and non-transactional engines and as such
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# its changes are logged as rows. However, due to the nature of the blackhole
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# engine, no rows are returned and thus any chain replication would make the
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# next master on the chain diverge.
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#
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# Fo this reason, we have disabled the statement.
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#
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# Test INSERT-SELECT from Blackhole, no primary key
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# let $statement = INSERT INTO t2 SELECT * FROM t1;
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# source extra/rpl_tests/rpl_blackhole.test;
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#
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connection master;
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ALTER TABLE t1 ADD PRIMARY KEY pk_t1 (a,b);
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# Test insert, primary key
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let $statement = INSERT INTO t1 VALUES (1,2,1),(2,2,2),(3,2,3),(4,2,4);
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source extra/rpl_tests/rpl_blackhole.test;
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# Test update, primary key
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let $statement = UPDATE t1 SET c = 2*c WHERE a % 2 = 0 AND b = 2;
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source extra/rpl_tests/rpl_blackhole.test;
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# Test delete, primary key
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let $statement = DELETE FROM t1 WHERE a % 2 = 0 AND b = 2;
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source extra/rpl_tests/rpl_blackhole.test;
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connection master;
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ALTER TABLE t1 DROP PRIMARY KEY, ADD KEY key_t1 (a);
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# Test insert, key
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let $statement = INSERT INTO t1 VALUES (1,3,1),(2,3,2),(3,3,3),(4,3,4);
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source extra/rpl_tests/rpl_blackhole.test;
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# Test update, key
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let $statement = UPDATE t1 SET c = 2*c WHERE a % 2 = 0 AND b = 3;
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source extra/rpl_tests/rpl_blackhole.test;
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# Test delete, key
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let $statement = DELETE FROM t1 WHERE a % 2 = 0 AND b = 3;
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source extra/rpl_tests/rpl_blackhole.test;
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connection master;
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DROP TABLE t1,t2;
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