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"Add a column "Timestamp_of_last_master_event_executed" in SHOW SLAVE STATUS". Finally this is adding - Slave_IO_State (a copy of the State column of SHOW PROCESSLIST for the I/O thread, so that the users, most of the time, has enough info with only SHOW SLAVE STATUS). - Seconds_behind_master. When the slave connects to the master it does SELECT UNIX_TIMESTAMP() on the master, computes the absolute difference between the master's and the slave's clock. It records the timestamp of the last event executed by the SQL thread, and does a small computation to find the number of seconds by which the slave is late. mysql-test/r/rpl000015.result: result update mysql-test/r/rpl_empty_master_crash.result: result update mysql-test/r/rpl_error_ignored_table.result: result update mysql-test/r/rpl_flush_log_loop.result: result update mysql-test/r/rpl_loaddata.result: result update mysql-test/r/rpl_log.result: result update mysql-test/r/rpl_log_pos.result: result update mysql-test/r/rpl_max_relay_size.result: result update mysql-test/r/rpl_redirect.result: result update mysql-test/r/rpl_replicate_do.result: result update mysql-test/r/rpl_reset_slave.result: result update mysql-test/r/rpl_rotate_logs.result: result update mysql-test/r/rpl_trunc_binlog.result: result update mysql-test/r/rpl_until.result: result update mysql-test/t/rpl000015.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_empty_master_crash.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_error_ignored_table.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_flush_log_loop.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_loaddata.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_log.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_log_pos.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_max_relay_size.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_openssl.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_redirect.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_replicate_do.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_reset_slave.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_rotate_logs.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_trunc_binlog.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS mysql-test/t/rpl_until.test: update to be independant of the new column Seconds_behind_master in SHOW SLAVE STATUS sql/log_event.cc: when the SQL thread executes an event, we record its timestamp sql/slave.cc: in check_master_version() we know read the master's clock, to know the clock difference with the slave. In show_master_info() we send the state of the I/O thread, and compute the number of seconds by which the slave is late. sql/slave.h: timestamp of the last master's event executed by the SQL thread, and difference between the clocks of the master and slave. sql/sql_repl.cc: clear the Seconds_behind_master column of SHOW SLAVE STATUS when RESET SLAVE or CHANGE MASTER.
109 lines
4.3 KiB
Text
109 lines
4.3 KiB
Text
source include/master-slave.inc;
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# Clean up old slave's binlogs.
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# The slave is started with --log-slave-updates
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# and this test does SHOW BINLOG EVENTS on the slave's
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# binlog. But previous tests can influence the current test's
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# binlog (e.g. a temporary table in the previous test has not
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# been explicitly deleted, and at the beginning of the current
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# test the slave immediately writes DROP TEMPORARY TABLE this_old_table).
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# We wait for the slave to have written all he wants to the binlog
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# (otherwise RESET MASTER may come too early).
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save_master_pos;
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connection slave;
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sync_with_master;
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stop slave;
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reset master;
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reset slave;
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# We are going to read the slave's binlog which contains file_id (for some LOAD
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# DATA INFILE); to make it repeatable (not influenced by other tests), we need
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# to stop and start the slave, to be sure file_id will start from 1.
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# This can be done with 'server_stop slave', but
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# this would require the manager, so most of the time the test will be skipped
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# :(
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# To workaround this, I (Guilhem) add a (empty) rpl_log-slave.opt (because when
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# mysql-test-run finds such a file it restarts the slave before doing the
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# test). That's not very elegant but I could find no better way, sorry.
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let $VERSION=`select version()`;
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connection master;
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reset master;
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create table t1(n int not null auto_increment primary key);
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insert into t1 values (NULL);
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drop table t1;
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create table t1 (word char(20) not null);
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load data infile '../../std_data/words.dat' into table t1 ignore 1 lines;
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select count(*) from t1;
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drop table t1;
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--replace_result $VERSION VERSION
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show binlog events;
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show binlog events from 79 limit 1;
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show binlog events from 79 limit 2;
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show binlog events from 79 limit 2,1;
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flush logs;
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# We need an extra update before doing save_master_pos.
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# Otherwise, an unlikely scenario may occur:
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# * When the master's binlog_dump thread reads the end of master-bin.001,
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# it send the rotate event which is at this end, plus a fake rotate event
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# because it's starting to read a new binlog.
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# save_master_pos will record the position of the first of the two rotate
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# (because the fake one is not in the master's binlog anyway).
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# * Later the slave waits for the position of the first rotate event,
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# and it may quickly stop (in 'slave stop') without having received the fake
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# one.
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# So, depending on a few milliseconds, we end up with 2 rotate events in the
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# relay log or one, which influences the output of SHOW SLAVE STATUS, making
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# it not predictable and causing random test failures.
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# To make it predictable, we do a useless update now, but which has the
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# interest of making the slave catch both rotate events.
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create table t5 (a int);
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drop table t5;
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# Sync slave and force it to start on another binary log
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save_master_pos;
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connection slave;
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# Note that the above 'slave start' will cause a 3rd rotate event (a fake one)
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# to go into the relay log (the master always sends a fake one when replication
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# starts).
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start slave;
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sync_with_master;
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flush logs;
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stop slave;
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connection master;
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# Create some entries for second log
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create table t1 (n int);
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insert into t1 values (1);
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drop table t1;
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--replace_result $VERSION VERSION
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show binlog events;
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show binlog events in 'master-bin.000002';
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show binary logs;
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save_master_pos;
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connection slave;
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start slave;
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sync_with_master;
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show binary logs;
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--replace_result 3306 MASTER_PORT 9306 MASTER_PORT 3334 MASTER_PORT 3336 MASTER_PORT $VERSION VERSION
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show binlog events in 'slave-bin.000001' from 4;
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--replace_result 3306 MASTER_PORT 9306 MASTER_PORT 3334 MASTER_PORT 3336 MASTER_PORT $VERSION VERSION
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show binlog events in 'slave-bin.000002' from 4;
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--replace_result 3306 MASTER_PORT 9306 MASTER_PORT 3334 MASTER_PORT 3336 MASTER_PORT
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--replace_column 33 #
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show slave status;
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# Need to recode the following
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#show new master for slave with master_log_file='master-bin.000001' and master_log_pos=4 and master_server_id=1;
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#show new master for slave with master_log_file='master-bin.000001' and master_log_pos=79 and master_server_id=1;
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#show new master for slave with master_log_file='master-bin.000001' and master_log_pos=311 and master_server_id=1;
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#show new master for slave with master_log_file='master-bin.000002' and master_log_pos=4 and master_server_id=1;
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#show new master for slave with master_log_file='master-bin.000002' and master_log_pos=122 and master_server_id=1;
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--error 1220
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show binlog events in 'slave-bin.000005' from 4;
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