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#
# Bug#11763573 - 56299: MUTEX DEADLOCK WITH COM_BINLOG_DUMP, BINLOG PURGE, AND PROCESSLIST/KILL
#
source include/have_debug_sync.inc;
source include/have_binlog_format_row.inc;
source include/have_innodb.inc;
source include/master-slave.inc;
#
# Testing that execution of two concurrent INSERTing connections both
# triggering the binlog rotation is correct even though their execution
# is interleaved.
# The test makes the first connection to complete the rotation part
# and yields control to the second connection that rotates as well and
# gets first on purging. And the fact of interleaving does not create
# any issue.
#
connection master;
source include/show_binary_logs.inc;
create table t1 (f text) engine=innodb;
SET DEBUG_SYNC = 'at_purge_logs_before_date WAIT_FOR rotated';
SET DEBUG_SYNC = 'after_purge_logs_before_date SIGNAL continued';
send insert into t1 set f=repeat('a', 4096);
connection master1;
let $wait_condition=
SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST
WHERE STATE like "debug sync point: at_purge_logs_before_date%";
--source include/wait_condition.inc
--echo *** there must be two logs in the list ***
source include/show_binary_logs.inc;
insert into t1 set f=repeat('b', 4096);
--echo *** there must be three logs in the list ***
source include/show_binary_logs.inc;
SET DEBUG_SYNC = 'now SIGNAL rotated';
SET DEBUG_SYNC = 'now WAIT_FOR continued';
SET DEBUG_SYNC = 'RESET';
# the first connection finally completes its INSERT
connection master;
reap;
SET DEBUG_SYNC = 'RESET';
sync_slave_with_master;
#
# Testing the reported deadlock involving DUMP, KILL and INSERT threads
#
connection master;
SET DEBUG_SYNC = 'at_purge_logs_before_date WAIT_FOR rotated';
SET DEBUG_SYNC = 'after_purge_logs_before_date SIGNAL continued';
send insert into t1 set f=repeat('b', 4096);
connection master1;
# make sure INSERT reaches waiting point
let $wait_condition=
SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST
WHERE STATE like "debug sync point: at_purge_logs_before_date%";
--source include/wait_condition.inc
# find and kill DUMP thread
let $_tid= `select id from information_schema.processlist where command = 'Binlog Dump' limit 1`;
--disable_query_log
eval kill query $_tid;
--enable_query_log
#
# Now the proof is that the new DUMP thread has executed
# a critical section of the deadlock without any regression and is UP
#
let $wait_condition=
SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST
WHERE command = 'Binlog Dump' and STATE like "Master has sent all binlog to slave%";
--source include/wait_condition.inc
SET DEBUG_SYNC = 'now SIGNAL rotated';
SET DEBUG_SYNC = 'now WAIT_FOR continued';
SET DEBUG_SYNC = 'RESET';
connection master;
reap;
SET DEBUG_SYNC = 'RESET';
drop table t1;
sync_slave_with_master;
--source include/rpl_end.inc
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