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0a68328673
This is actually an existing problem in the old binlog implementation, and this patch is applicable to old binlog also. The problem is that RESET MASTER can run concurrently with binlog dump threads / connected slaves. This will remove the binlog from under the feet of the reader, which can cause all sorts of strange behaviour. This patch fixes the problem by disallowing to run RESET MASTER when dump threads (or other RESET MASTER or SHOW BINARY LOGS) are running. An error is thrown in this case, user must stop slaves and/or kill dump threads to make the RESET MASTER go through. A slave that connects in the middle of RESET MASTER will wait for it to complete. Fix a lot of test cases to kill any lingering dump threads before doing RESET MASTER, mostly just by sourcing include/kill_binlog_dump_threads.inc. Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>
119 lines
3.3 KiB
Text
119 lines
3.3 KiB
Text
# Requires binlog_format=statement format since query involving
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# get_lock() is logged in row format if binlog_format=mixed or row.
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-- source include/have_binlog_format_statement.inc
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-- source include/master-slave.inc
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CALL mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT");
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# Load some data into 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;
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--replace_result $MYSQL_TEST_DIR MYSQL_TEST_DIR
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eval load data local infile '$MYSQL_TEST_DIR/std_data/words.dat' into table t1;
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select * from t1 limit 10;
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#
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# Test slave with wrong password
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#
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sync_slave_with_master;
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stop slave;
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connection master;
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create temporary table tmp select * from mysql.global_priv where host="localhost" and user="root";
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set password for root@"localhost" = password('foo');
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connection slave;
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start slave;
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connection master;
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#
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# Give slave time to do at last one failed connect retry
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# This one must be short so that the slave will not stop retrying
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real_sleep 2;
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replace into mysql.global_priv select * from tmp;
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drop temporary table tmp;
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flush privileges;
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# Give slave time to connect (will retry every second)
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sleep 2;
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create table t3(n int);
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insert into t3 values(1),(2);
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sync_slave_with_master;
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select * from t3;
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select sum(length(word)) from t1;
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connection master;
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drop table t1,t3;
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sync_slave_with_master;
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# Test if the slave SQL thread can be more than 16K behind the slave
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# I/O thread (> IO_SIZE)
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connection master;
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# we'll use table-level locking to delay slave SQL thread
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eval create table t1 (n int);
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sync_slave_with_master;
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stop slave;
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connection master;
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--source include/kill_binlog_dump_threads.inc
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reset master;
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connection slave;
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--source include/reset_slave.inc
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connection master;
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let $1=5000;
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# Generate 16K of relay log
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disable_query_log;
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while ($1)
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{
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eval insert into t1 values($1);
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dec $1;
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}
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enable_query_log;
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# Try to cause a large relay log lag on the slave by locking t1
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connection slave;
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lock tables t1 read;
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start slave;
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connection master;
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--source include/sync_slave_io_with_master.inc
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unlock tables;
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#test handling of aborted connection in the middle of update
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connection master;
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create table t2(id int);
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insert into t2 values(connection_id());
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connection master1;
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# Avoid generating result
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create temporary table t3(n int);
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--disable_warnings
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insert into t3 select get_lock('crash_lock%20C', 1) from t2;
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--enable_warnings
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connection master;
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send update t1 set n = n + get_lock('crash_lock%20C', 2);
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connection master1;
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let $wait_condition= SELECT count(*) > 0 FROM information_schema.processlist WHERE info LIKE 'update%' AND state='User lock';
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source include/wait_condition.inc;
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select (@id := id) - id from t2;
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kill @id;
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drop table t2;
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drop temporary table t3;
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connection master;
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# The get_lock function causes warning for unsafe statement.
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--disable_warnings
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# 2013 = CR_SERVER_LOST
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--error ER_QUERY_INTERRUPTED,ER_CONNECTION_KILLED,2013
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reap;
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--enable_warnings
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connection slave;
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# The SQL slave thread should now have stopped because the query was killed on
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# the master (so it has a non-zero error code in the binlog).
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# 1927 = ER_CONNECTION_KILLED
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--let $slave_sql_errno= 1927
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--source include/wait_for_slave_sql_error_and_skip.inc
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select count(*) from t1;
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connection master1;
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drop table t1;
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# End of 4.1 tests
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--source include/rpl_end.inc
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