Final push for WL#1098:

"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.

1 files changed, 4 insertions, 0 deletions

diff --git a/mysql-test/t/rpl000015.test b/mysql-test/t/rpl000015.test
index b5234373355..b71e8472e67 100644
--- a/mysql-test/t/rpl000015.test
+++ b/mysql-test/t/rpl000015.test
@@ -7,20 +7,24 @@ save_master_pos;
 connection slave;
 reset slave;
 --replace_result $MASTER_MYPORT MASTER_PORT
+--replace_column 33 #
 show slave status;
 
 change master to master_host='127.0.0.1';
 # The following needs to be cleaned up when change master is fixed
 --replace_result $MASTER_MYPORT MASTER_PORT 3306 MASTER_PORT 3334 MASTER_PORT
+--replace_column 33 #
 show slave status;
 --replace_result $MASTER_MYPORT MASTER_PORT
 eval change master to master_host='127.0.0.1',master_user='root',
  master_password='',master_port=$MASTER_MYPORT;
 --replace_result $MASTER_MYPORT MASTER_PORT
+--replace_column 33 #
 show slave status;
 start slave;
 sync_with_master;
 --replace_result $MASTER_MYPORT MASTER_PORT
+--replace_column 33 #
 show slave status;
 connection master;
 --disable_warnings