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b87ccfdfbc
Handle the 'set read_only=1' in lighter way, than the FLUSH TABLES READ LOCK;
For the transactional engines we don't wait for operations on that tables to finish.
per-file comments:
mysql-test/r/read_only_innodb.result
MDEV-136 Non-blocking "set read_only".
test result updated.
mysql-test/t/read_only_innodb.test
MDEV-136 Non-blocking "set read_only".
test case added.
sql/mysql_priv.h
MDEV-136 Non-blocking "set read_only".
The close_cached_tables_set_readonly() declared.
sql/set_var.cc
MDEV-136 Non-blocking "set read_only".
Call close_cached_tables_set_readonly() for the read_only::set_var.
sql/sql_base.cc
MDEV-136 Non-blocking "set read_only".
Parameters added to the close_cached_tables implementation,
close_cached_tables_set_readonly declared.
Prevent blocking on the transactional tables if the
set_readonly_mode is on.
114 lines
2.1 KiB
Text
114 lines
2.1 KiB
Text
# should work with embedded server after mysqltest is fixed
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-- source include/not_embedded.inc
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-- source include/have_innodb.inc
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#
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# BUG#11733: COMMITs should not happen if read-only is set
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#
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--disable_warnings
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DROP TABLE IF EXISTS table_11733 ;
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--enable_warnings
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# READ_ONLY does nothing to SUPER users
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# so we use a non-SUPER one:
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grant CREATE, SELECT, DROP on *.* to test@localhost;
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connect (con1,localhost,test,,test);
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connection default;
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set global read_only=0;
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# Any transactional engine will do
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create table table_11733 (a int) engine=InnoDb;
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connection con1;
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BEGIN;
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insert into table_11733 values(11733);
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connection default;
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set global read_only=1;
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connection con1;
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select @@global.read_only;
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select * from table_11733 ;
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-- error ER_OPTION_PREVENTS_STATEMENT
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COMMIT;
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connection default;
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set global read_only=0;
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drop table table_11733 ;
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drop user test@localhost;
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disconnect con1;
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#
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# Bug #35732: read-only blocks SELECT statements in InnoDB
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#
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# Test 1: read only mode
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GRANT CREATE, SELECT, DROP ON *.* TO test@localhost;
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connect(con1, localhost, test, , test);
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connection default;
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CREATE TABLE t1(a INT) ENGINE=INNODB;
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INSERT INTO t1 VALUES (0), (1);
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SET GLOBAL read_only=1;
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connection con1;
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SELECT * FROM t1;
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BEGIN;
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SELECT * FROM t1;
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COMMIT;
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connection default;
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SET GLOBAL read_only=0;
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#
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# Test 2: global read lock
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#
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FLUSH TABLES WITH READ LOCK;
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connection con1;
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SELECT * FROM t1;
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BEGIN;
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SELECT * FROM t1;
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COMMIT;
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#
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# Tests that LOCK TABLE doesn't block the SET READ_ONLY=1 for the InnoDB tables
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#
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connection default;
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UNLOCK TABLES;
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FLUSH STATUS;
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--echo # Expected 0 at the beginning of the test
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show status like 'Opened_tables';
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--echo connection con1;
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connection con1;
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lock table t1 write;
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--echo connection default;
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connection default;
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set global read_only=1;
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--echo # Expected 1 as the slow_log was reopened
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show status like 'Opened_tables';
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--echo connection con1;
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connection con1;
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unlock tables;
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--echo connection default;
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connection default;
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SET GLOBAL read_only=0;
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--echo # Expected 2 as the slow_log was reopened
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show status like 'Opened_tables';
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UNLOCK TABLES;
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DROP TABLE t1;
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DROP USER test@localhost;
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disconnect con1;
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--echo echo End of 5.1 tests
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