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5ab5ff08b0
This commit makes replicas crash-safe by default by changing the Using_Gtid value to be Slave_Pos on a fresh slave start and after RESET SLAVE is issued. If the primary server does not support GTIDs (i.e., version < 10), the replica will fall back to Using_Gtid=No on slave start and after RESET SLAVE. The following additional informational messages/warnings are added: 1. When Using_Gtid is automatically changed. That is, if RESET SLAVE reverts Using_Gtid back to Slave_Pos, or Using_Gtid is inferred to No from a CHANGE MASTER TO given with log coordinates without MASTER_USE_GTID. 2. If options are ignored in CHANGE MASTER TO. If CHANGE MASTER TO is given with log coordinates, yet also specifies MASTER_USE_GTID=Slave_Pos, a warning message is given that the log coordinate options are ignored. Additionally, an MTR macro has been added for RESET SLAVE, reset_slave.inc, which provides modes/options for resetting a slave in log coordinate or gtid modes. When in log coordinates mode, the macro will execute CHANGE MASTER TO MASTER_USE_GTID=No after the RESET SLAVE command. When in GTID mode, an extra parameter, reset_slave_keep_gtid_state, can be set to reset or preserve the value of gtid_slave_pos. Reviewed By: =========== Andrei Elkin <andrei.elkin@mariadb.com>
32 lines
542 B
Text
32 lines
542 B
Text
include/master-slave.inc
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[connection master]
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CREATE TABLE t1 (n INT);
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connection slave;
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connection master;
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RESET MASTER;
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connection slave;
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STOP SLAVE;
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include/reset_slave.inc
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connection master;
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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5000
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connection slave;
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LOCK TABLES t1 READ;
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START SLAVE;
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UNLOCK TABLES;
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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5000
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connection master;
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DROP TABLE t1;
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CREATE TABLE t1 (n INT);
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INSERT INTO t1 VALUES(3456);
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connection slave;
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SELECT n FROM t1;
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n
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3456
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connection master;
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DROP TABLE t1;
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connection slave;
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include/rpl_end.inc
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