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# ==== Purpose ====
#
# This test will issue a CHANGE MASTER TO MASTER_DELAY while both replication
# threads are stopped and there are content received by the I/O thread yet to
# be applied by the SQL thread.
#
# The test case verifies that issuing the CHANGE MASTER will not purge the
# relay log, and the replica will not lose master contents.
#
# ==== Related Bugs and Worklogs ====
#
# BUG#23203678 CHANGING MASTER_DELAY AFTER STOP SLAVE RESULTS IN LOSS OF EVENTS
#
# This test case is binary log format agnostic
--source include/have_binlog_format_mixed.inc
--source include/master-slave.inc
CREATE TABLE t1 (c1 int);
--source include/sync_slave_sql_with_master.inc
--source include/stop_slave_sql.inc
--source include/rpl_connection_master.inc
INSERT INTO t1 VALUES (1);
--source include/sync_slave_io_with_master.inc
# As a workaround, not stopping the I/O thread on line below would
# prevent the slave from purging the relay log.
--source include/stop_slave_io.inc
CHANGE REPLICATION SOURCE TO SOURCE_DELAY=1;
--source include/start_slave.inc
--source include/rpl_connection_master.inc
--source include/sync_slave_sql_with_master.inc
--let $inserted_value=query_get_value(SELECT * FROM t1, c1, 1)
--let $assert_text= Assert that the \$inserted_value is equal to 1
--let $assert_cond= "$inserted_value" = "1"
--source include/assert.inc
# Clean up
--source include/stop_slave.inc
CHANGE REPLICATION SOURCE TO SOURCE_DELAY=0;
--source include/start_slave.inc
--source include/rpl_connection_master.inc
DROP TABLE t1;
--source include/rpl_end.inc
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