mirror of
https://github.com/MariaDB/server.git
synced 2025-11-04 04:46:15 +01:00
81c88ab7cd
MyISAM tables no longer take transactional metadata locks unless there already is an active transaction.
832 lines
21 KiB
Text
832 lines
21 KiB
Text
#
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# Test coverage for changes performed by the fix
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# for Bug#30977 "Concurrent statement using stored function
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# and DROP FUNCTION breaks SBR.
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#
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#
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# 1) Verify that the preceding transaction is
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# (implicitly) committed before CREATE/ALTER/DROP
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# PROCEDURE. Note, that this is already tested
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# in implicit_commit.test, but here we use an alternative
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# approach.
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#
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# Start a transaction, create a savepoint,
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# then call a DDL operation on a procedure, and then check
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# that the savepoint is no longer present.
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create table t1 (a int);
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#
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# Test 'CREATE PROCEDURE'.
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#
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begin;
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savepoint sv;
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create procedure p1() begin end;
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rollback to savepoint sv;
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ERROR 42000: SAVEPOINT sv does not exist
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#
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# Test 'ALTER PROCEDURE'.
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#
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begin;
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savepoint sv;
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alter procedure p1 comment 'changed comment';
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rollback to savepoint sv;
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ERROR 42000: SAVEPOINT sv does not exist
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#
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# Test 'DROP PROCEDURE'.
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#
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begin;
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savepoint sv;
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drop procedure p1;
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rollback to savepoint sv;
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ERROR 42000: SAVEPOINT sv does not exist
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#
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# Test 'CREATE FUNCTION'.
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#
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begin;
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savepoint sv;
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create function f1() returns int return 1;
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rollback to savepoint sv;
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ERROR 42000: SAVEPOINT sv does not exist
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#
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# Test 'ALTER FUNCTION'.
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#
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begin;
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savepoint sv;
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alter function f1 comment 'new comment';
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rollback to savepoint sv;
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ERROR 42000: SAVEPOINT sv does not exist
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#
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# Test 'DROP FUNCTION'.
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#
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begin;
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savepoint sv;
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drop function f1;
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rollback to savepoint sv;
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ERROR 42000: SAVEPOINT sv does not exist
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#
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# 2) Verify that procedure DDL operations fail
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# under lock tables.
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#
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# Auxiliary routines to test ALTER.
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create procedure p1() begin end;
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create function f1() returns int return 1;
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lock table t1 write;
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create procedure p2() begin end;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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alter procedure p1 comment 'changed comment';
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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drop procedure p1;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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create function f2() returns int return 1;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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alter function f1 comment 'changed comment';
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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lock table t1 read;
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create procedure p2() begin end;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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alter procedure p1 comment 'changed comment';
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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drop procedure p1;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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create function f2() returns int return 1;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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alter function f1 comment 'changed comment';
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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unlock tables;
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#
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# Even if we locked a temporary table.
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# Todo: this is a restriction we could possibly lift.
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#
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drop table t1;
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create temporary table t1 (a int);
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lock table t1 read;
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create procedure p2() begin end;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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alter procedure p1 comment 'changed comment';
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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drop procedure p1;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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create function f2() returns int return 1;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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alter function f1 comment 'changed comment';
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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unlock tables;
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drop function f1;
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drop procedure p1;
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drop temporary table t1;
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#
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# 3) Verify that CREATE/ALTER/DROP routine grab an
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# exclusive lock.
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#
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# For that, start a transaction, use a routine. In a concurrent
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# connection, try to drop or alter the routine. It should place
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# a pending or exclusive lock and block. In another concurrnet
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# connection, try to use the routine.
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# That should block on the pending exclusive lock.
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#
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connect con1, localhost, root,,;
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connect con2, localhost, root,,;
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connect con3, localhost, root,,;
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#
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# Test DROP PROCEDURE.
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#
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connection default;
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create procedure p1() begin end;
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create function f1() returns int
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begin
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call p1();
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return 1;
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end|
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begin;
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select f1();
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f1()
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1
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connection con1;
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# Sending 'drop procedure p1'...
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drop procedure p1;
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connection con2;
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# Waiting for 'drop procedure t1' to get blocked on MDL lock...
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# Demonstrate that there is a pending exclusive lock.
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# Sending 'select f1()'...
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select f1();
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connection con3;
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# Waiting for 'select f1()' to get blocked by a pending MDL lock...
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connection default;
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commit;
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connection con1;
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# Reaping 'drop procedure p1'...
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connection con2;
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# Reaping 'select f1()'
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ERROR 42000: PROCEDURE test.p1 does not exist
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connection default;
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#
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# Test CREATE PROCEDURE.
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#
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create procedure p1() begin end;
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begin;
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select f1();
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f1()
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1
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connection con1;
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# Sending 'create procedure p1'...
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create procedure p1() begin end;
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connection con2;
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# Waiting for 'create procedure t1' to get blocked on MDL lock...
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# Demonstrate that there is a pending exclusive lock.
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# Sending 'select f1()'...
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select f1();
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connection con3;
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# Waiting for 'select f1()' to get blocked by a pending MDL lock...
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connection default;
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commit;
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connection con1;
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# Reaping 'create procedure p1'...
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ERROR 42000: PROCEDURE p1 already exists
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connection con2;
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# Reaping 'select f1()'
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f1()
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1
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connection default;
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#
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# Test ALTER PROCEDURE.
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#
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begin;
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select f1();
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f1()
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1
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connection con1;
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# Sending 'alter procedure p1'...
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alter procedure p1 contains sql;
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connection con2;
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# Waiting for 'alter procedure t1' to get blocked on MDL lock...
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# Demonstrate that there is a pending exclusive lock.
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# Sending 'select f1()'...
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select f1();
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connection con3;
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# Waiting for 'select f1()' to get blocked by a pending MDL lock...
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connection default;
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commit;
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connection con1;
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# Reaping 'alter procedure p1'...
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connection con2;
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# Reaping 'select f1()'
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f1()
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1
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connection default;
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#
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# Test DROP FUNCTION.
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#
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begin;
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select f1();
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f1()
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1
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connection con1;
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# Sending 'drop function f1'...
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drop function f1;
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connection con2;
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# Waiting for 'drop function f1' to get blocked on MDL lock...
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# Demonstrate that there is a pending exclusive lock.
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# Sending 'select f1()'...
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select f1();
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connection con3;
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# Waiting for 'select f1()' to get blocked by a pending MDL lock...
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connection default;
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commit;
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connection con1;
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# Reaping 'drop function f1'...
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connection con2;
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# Reaping 'select f1()'
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ERROR 42000: FUNCTION test.f1 does not exist
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connection default;
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#
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# Test CREATE FUNCTION.
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#
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create function f1() returns int return 1;
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begin;
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select f1();
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f1()
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1
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connection con1;
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# Sending 'create function f1'...
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create function f1() returns int return 2;
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connection con2;
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# Waiting for 'create function f1' to get blocked on MDL lock...
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# Demonstrate that there is a pending exclusive lock.
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# Sending 'select f1()'...
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select f1();
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connection con3;
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# Waiting for 'select f1()' to get blocked by a pending MDL lock...
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connection default;
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commit;
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connection con1;
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# Reaping 'create function f1'...
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ERROR 42000: FUNCTION f1 already exists
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connection con2;
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# Reaping 'select f1()'
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f1()
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1
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connection default;
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#
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# Test ALTER FUNCTION.
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#
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begin;
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select f1();
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f1()
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1
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connection con1;
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# Sending 'alter function f1'...
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alter function f1 contains sql;
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connection con2;
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# Waiting for 'alter function f1' to get blocked on MDL lock...
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# Demonstrate that there is a pending exclusive lock.
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# Sending 'select f1()'...
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select f1();
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connection con3;
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# Waiting for 'select f1()' to get blocked by a pending MDL lock...
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connection default;
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commit;
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connection con1;
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# Reaping 'alter function f1'...
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connection con2;
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# Reaping 'select f1()'
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f1()
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1
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connection default;
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drop function f1;
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drop procedure p1;
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#
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# 4) MDL lock should not be taken for
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# unrolled CALL statements.
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# The primary goal of metadata locks is a consistent binary log.
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# When a call statement is unrolled, it doesn't get to the
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# binary log, instead the statements that are contained
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# in the procedure body do. This can nest to any level.
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#
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create procedure p1() begin end;
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create procedure p2() begin end;
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create table t1 (a int);
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create procedure p3()
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begin
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call p1();
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call p1();
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call p2();
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end|
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create procedure p4()
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begin
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call p1();
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call p1();
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call p2();
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call p2();
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call p3();
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end|
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begin;
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select * from t1;
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a
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savepoint sv;
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call p4();
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# Prepared statement should not add any locks either.
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prepare stmt from "call p4()";
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execute stmt;
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execute stmt;
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connection con1;
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drop procedure p1;
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drop procedure p2;
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drop procedure p3;
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drop procedure p4;
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connection default;
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# This is to verify there was no implicit commit.
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rollback to savepoint sv;
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call p4();
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ERROR 42000: PROCEDURE test.p4 does not exist
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commit;
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drop table t1;
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#
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# 5) Locks should be taken on routines
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# used indirectly by views or triggers.
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#
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#
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# A function is used from a trigger.
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#
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create function f1() returns int return 1;
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create table t1 (a int);
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create table t2 (a int, b int);
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create trigger t1_ai after insert on t1 for each row
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insert into t2 (a, b) values (new.a, f1());
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begin;
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insert into t1 (a) values (1);
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connection con1;
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# Sending 'drop function f1'
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drop function f1;
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connection con2;
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# Waiting for 'drop function f1' to get blocked on MDL lock...
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connection default;
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commit;
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connection con1;
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# Reaping 'drop function f1'...
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connection default;
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#
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# A function is used from a view.
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#
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create function f1() returns int return 1;
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create view v1 as select f1() as a;
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begin;
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select * from v1;
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a
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1
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connection con1;
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# Sending 'drop function f1'
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drop function f1;
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connection con2;
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# Waiting for 'drop function f1' to get blocked on MDL lock...
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connection default;
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commit;
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connection con1;
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# Reaping 'drop function f1'...
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connection default;
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#
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# A procedure is used from a function.
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#
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create function f1() returns int
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begin
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declare v_out int;
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call p1(v_out);
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return v_out;
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end|
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create procedure p1(out v_out int) set v_out=3;
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begin;
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select * from v1;
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a
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3
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connection con1;
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# Sending 'drop procedure p1'
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drop procedure p1;
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connection con2;
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# Waiting for 'drop procedure p1' to get blocked on MDL lock...
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connection default;
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commit;
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connection con1;
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# Reaping 'drop procedure p1'...
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connection default;
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#
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# Deep nesting: a function is used from a procedure used
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# from a function used from a view used in a trigger.
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#
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create function f2() returns int return 4;
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create procedure p1(out v_out int) set v_out=f2();
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drop trigger t1_ai;
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create trigger t1_ai after insert on t1 for each row
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insert into t2 (a, b) values (new.a, (select max(a) from v1));
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begin;
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insert into t1 (a) values (3);
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connection con1;
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# Sending 'drop function f2'
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drop function f2;
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connection con2;
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# Waiting for 'drop function f2' to get blocked on MDL lock...
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connection default;
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commit;
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connection con1;
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# Reaping 'drop function f2'...
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connection default;
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drop view v1;
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drop function f1;
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drop procedure p1;
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drop table t1, t2;
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#
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# 6) Check that ER_LOCK_DEADLOCK is reported if
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# acquisition of a shared lock fails during a transaction or
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# we need to back off to flush the sp cache.
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#
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# Sic: now this situation does not require a back off since we
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# flush the cache on the fly.
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#
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create function f1() returns int return 7;
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create table t1 (a int);
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begin;
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select * from t1;
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a
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select f1();
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f1()
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7
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commit;
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drop table t1;
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drop function f1;
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#
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# 7) Demonstrate that under LOCK TABLES we accumulate locks
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# on stored routines, and release metadata locks in
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# ROLLBACK TO SAVEPOINT. That is done only for those stored
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# routines that are not part of LOCK TABLES prelocking list.
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# Those stored routines that are part of LOCK TABLES
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# prelocking list are implicitly locked when entering
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# LOCK TABLES, and ROLLBACK TO SAVEPOINT has no effect on
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# them.
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#
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create function f1() returns varchar(20) return "f1()";
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create function f2() returns varchar(20) return "f2()";
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create view v1 as select f1() as a;
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lock table v1 read;
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start transaction;
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select * from v1;
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a
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f1()
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savepoint sv;
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select f2();
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f2()
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f2()
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connection con1;
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# Sending 'drop function f1'...
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drop function f1;
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connection con2;
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# Waiting for 'drop function f1' to get blocked on MDL lock...
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# Sending 'drop function f2'...
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drop function f2;
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connection default;
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# Waiting for 'drop function f2' to get blocked on MDL lock...
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rollback to savepoint sv;
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connection con2;
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# Reaping 'drop function f2'...
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connection default;
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unlock tables;
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commit;
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connection con1;
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# Reaping 'drop function f1'...
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connection default;
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drop function f1;
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ERROR 42000: FUNCTION test.f1 does not exist
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drop function f2;
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ERROR 42000: FUNCTION test.f2 does not exist
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drop view v1;
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#
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# 8) Check the situation when we're preparing or executing a
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# prepared statement, and as part of that try to flush the
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# session sp cache. However, one of the procedures that
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# needs a flush is in use. Verify that there is no infinite
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# reprepare loop and no crash.
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#
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create function f1() returns int return 1;
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#
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# We just mention p1() in the body of f2() to make
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# sure that p1() metadata is validated when validating
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# 'select f2()'.
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# Recursion is not allowed in stored functions, so
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# an attempt to just invoke p1() from f2() which is in turn
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# called from p1() would have given a run-time error.
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#
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create function f2() returns int
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begin
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if @var is null then
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call p1();
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end if;
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return 1;
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end|
|
|
create procedure p1()
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begin
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select f1() into @var;
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execute stmt;
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end|
|
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connection con2;
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prepare stmt from "select f2()";
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connection default;
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begin;
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select f1();
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f1()
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1
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connection con1;
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# Sending 'alter function f1 ...'...
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alter function f1 comment "comment";
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connection con2;
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# Waiting for 'alter function f1 ...' to get blocked on MDL lock...
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# Sending 'call p1()'...
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call p1();
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connection default;
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# Waiting for 'call p1()' to get blocked on MDL lock on f1...
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# Let 'alter function f1 ...' go through...
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commit;
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connection con1;
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# Reaping 'alter function f1 ...'
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connection con2;
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# Reaping 'call p1()'...
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f2()
|
|
1
|
|
deallocate prepare stmt;
|
|
connection default;
|
|
drop function f1;
|
|
drop function f2;
|
|
drop procedure p1;
|
|
#
|
|
# 9) Check the situation when a stored function is invoked
|
|
# from a stored procedure, and recursively invokes the
|
|
# stored procedure that is in use. But for the second
|
|
# invocation, a cache flush is requested. We can't
|
|
# flush the procedure that's in use, and are forced
|
|
# to use an old version. It is not a violation of
|
|
# consistency, since we unroll top-level calls.
|
|
# Just verify the code works.
|
|
#
|
|
create function f1() returns int return 1;
|
|
begin;
|
|
select f1();
|
|
f1()
|
|
1
|
|
connection con1;
|
|
# Sending 'alter function f1 ...'...
|
|
alter function f1 comment "comment";
|
|
connection con2;
|
|
# Waiting for 'alter function f1 ...' to get blocked on MDL lock...
|
|
#
|
|
# We just mention p1() in the body of f2() to make
|
|
# sure that p1() is prelocked for f2().
|
|
# Recursion is not allowed in stored functions, so
|
|
# an attempt to just invoke p1() from f2() which is in turn
|
|
# called from p1() would have given a run-time error.
|
|
#
|
|
create function f2() returns int
|
|
begin
|
|
if @var is null then
|
|
call p1();
|
|
end if;
|
|
return 1;
|
|
end|
|
|
create procedure p1()
|
|
begin
|
|
select f1() into @var;
|
|
select f2() into @var;
|
|
end|
|
|
# Sending 'call p1()'...
|
|
call p1();
|
|
connection default;
|
|
# Waiting for 'call p1()' to get blocked on MDL lock on f1...
|
|
# Let 'alter function f1 ...' go through...
|
|
commit;
|
|
connection con1;
|
|
# Reaping 'alter function f1 ...'
|
|
connection con2;
|
|
# Reaping 'call p1()'...
|
|
connection default;
|
|
drop function f1;
|
|
drop function f2;
|
|
drop procedure p1;
|
|
#
|
|
# 10) A select from information_schema.routines now
|
|
# flushes the stored routines caches. Test that this
|
|
# does not remove from the cache a stored routine
|
|
# that is already prelocked.
|
|
#
|
|
create function f1() returns int return get_lock("30977", 100000);
|
|
create function f2() returns int return 2;
|
|
create function f3() returns varchar(255)
|
|
begin
|
|
declare res varchar(255);
|
|
declare c cursor for select routine_name from
|
|
information_schema.routines where routine_name='f1';
|
|
select f1() into @var;
|
|
open c;
|
|
fetch c into res;
|
|
close c;
|
|
select f2() into @var;
|
|
return res;
|
|
end|
|
|
connection con1;
|
|
select get_lock("30977", 0);
|
|
get_lock("30977", 0)
|
|
1
|
|
connection default;
|
|
# Sending 'select f3()'...
|
|
select f3();
|
|
connection con1;
|
|
# Waiting for 'select f3()' to get blocked on the user level lock...
|
|
# Do something to change the cache version.
|
|
create function f4() returns int return 4;
|
|
drop function f4;
|
|
select release_lock("30977");
|
|
release_lock("30977")
|
|
1
|
|
connection default;
|
|
# Reaping 'select f3()'...
|
|
# Routine 'f2()' should exist and get executed successfully.
|
|
f3()
|
|
f1
|
|
select @var;
|
|
@var
|
|
2
|
|
drop function f1;
|
|
drop function f2;
|
|
drop function f3;
|
|
# 11) Check the situation when the connection is flushing the
|
|
# SP cache which contains a procedure that is being executed.
|
|
#
|
|
# Function f1() calls p1(). Procedure p1() has a DROP
|
|
# VIEW statement, which, we know, invalidates the routines cache.
|
|
# During cache flush p1() must not be flushed since it's in
|
|
# use.
|
|
#
|
|
create function f1() returns int
|
|
begin
|
|
call p1();
|
|
return 1;
|
|
end|
|
|
create procedure p1()
|
|
begin
|
|
create view v1 as select 1;
|
|
drop view v1;
|
|
select f1() into @var;
|
|
set @exec_count=@exec_count+1;
|
|
end|
|
|
set @exec_count=0;
|
|
call p1();
|
|
ERROR HY000: Recursive limit 0 (as set by the max_sp_recursion_depth variable) was exceeded for routine p1
|
|
select @exec_count;
|
|
@exec_count
|
|
0
|
|
set @@session.max_sp_recursion_depth=5;
|
|
set @exec_count=0;
|
|
call p1();
|
|
ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger
|
|
select @exec_count;
|
|
@exec_count
|
|
0
|
|
drop procedure p1;
|
|
drop function f1;
|
|
set @@session.max_sp_recursion_depth=default;
|
|
connection con1;
|
|
disconnect con1;
|
|
connection con2;
|
|
disconnect con2;
|
|
connection con3;
|
|
disconnect con3;
|
|
connection default;
|
|
#
|
|
# SHOW CREATE PROCEDURE p1 called from p1, after p1 was altered
|
|
#
|
|
CREATE PROCEDURE p1()
|
|
BEGIN
|
|
SELECT get_lock("test", 10);
|
|
SHOW CREATE PROCEDURE p1;
|
|
END|
|
|
connect con2, localhost, root;
|
|
connect con3, localhost, root;
|
|
connection default;
|
|
SELECT get_lock("test", 10);
|
|
get_lock("test", 10)
|
|
1
|
|
connection con2;
|
|
# Will halt before executing SHOW CREATE PROCEDURE p1
|
|
# Sending:
|
|
CALL p1();
|
|
connection con3;
|
|
# Alter p1
|
|
DROP PROCEDURE p1;
|
|
CREATE PROCEDURE p1() BEGIN END;
|
|
connection default;
|
|
# Resume CALL p1, now with new p1
|
|
SELECT release_lock("test");
|
|
release_lock("test")
|
|
1
|
|
connection con2;
|
|
# Reaping: CALL p1()
|
|
get_lock("test", 10)
|
|
1
|
|
Procedure sql_mode Create Procedure character_set_client collation_connection Database Collation
|
|
p1 STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION CREATE DEFINER=`root`@`localhost` PROCEDURE `p1`()
|
|
BEGIN END latin1 latin1_swedish_ci latin1_swedish_ci
|
|
connection con3;
|
|
disconnect con3;
|
|
connection con2;
|
|
disconnect con2;
|
|
connection default;
|
|
DROP PROCEDURE p1;
|
|
#
|
|
# Bug#57663 Concurrent statement using stored function and DROP DATABASE
|
|
# breaks SBR
|
|
#
|
|
connect con1, localhost, root;
|
|
connect con2, localhost, root;
|
|
# Test 1: Check that DROP DATABASE block if a function is used
|
|
# by an active transaction.
|
|
connection default;
|
|
CREATE DATABASE db1;
|
|
CREATE FUNCTION db1.f1() RETURNS INTEGER RETURN 1;
|
|
START TRANSACTION;
|
|
SELECT db1.f1();
|
|
db1.f1()
|
|
1
|
|
connection con1;
|
|
# Sending:
|
|
DROP DATABASE db1;
|
|
connection default;
|
|
# Waiting for DROP DATABASE to be blocked by the lock on f1()
|
|
COMMIT;
|
|
connection con1;
|
|
# Reaping: DROP DATABASE db1
|
|
# Test 2: Check that DROP DATABASE blocks if a procedure is
|
|
# used by an active transaction.
|
|
connection default;
|
|
CREATE DATABASE db1;
|
|
CREATE PROCEDURE db1.p1() BEGIN END;
|
|
CREATE FUNCTION f1() RETURNS INTEGER
|
|
BEGIN
|
|
CALL db1.p1();
|
|
RETURN 1;
|
|
END|
|
|
START TRANSACTION;
|
|
SELECT f1();
|
|
f1()
|
|
1
|
|
connection con1;
|
|
# Sending:
|
|
DROP DATABASE db1;
|
|
connection default;
|
|
# Waiting for DROP DATABASE to be blocked by the lock on p1()
|
|
COMMIT;
|
|
connection con1;
|
|
# Reaping: DROP DATABASE db1
|
|
# Test 3: Check that DROP DATABASE is not selected as a victim if a
|
|
# deadlock is discovered with DML statements.
|
|
connection default;
|
|
CREATE DATABASE db1;
|
|
CREATE TABLE db1.t1 (a INT);
|
|
CREATE FUNCTION db1.f1() RETURNS INTEGER RETURN 1;
|
|
START TRANSACTION;
|
|
SELECT db1.f1();
|
|
db1.f1()
|
|
1
|
|
connection con1;
|
|
# Sending:
|
|
DROP DATABASE db1;
|
|
connection default;
|
|
# Waiting for DROP DATABASE to be blocked by the lock on f1()
|
|
SELECT * FROM db1.t1;
|
|
ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
|
|
COMMIT;
|
|
connection con1;
|
|
# Reaping: DROP DATABASE db1
|
|
# Test 4: Check that active DROP DATABASE blocks stored routine DDL.
|
|
connection default;
|
|
CREATE DATABASE db1;
|
|
CREATE FUNCTION db1.f1() RETURNS INTEGER RETURN 1;
|
|
CREATE FUNCTION db1.f2() RETURNS INTEGER RETURN 2;
|
|
START TRANSACTION;
|
|
SELECT db1.f2();
|
|
db1.f2()
|
|
2
|
|
connection con1;
|
|
# Sending:
|
|
DROP DATABASE db1;
|
|
connection con2;
|
|
# Waiting for DROP DATABASE to be blocked by the lock on f2()
|
|
# Sending:
|
|
ALTER FUNCTION db1.f1 COMMENT "test";
|
|
connection default;
|
|
# Waiting for ALTER FUNCTION to be blocked by the schema lock on db1
|
|
COMMIT;
|
|
connection con1;
|
|
# Reaping: DROP DATABASE db1
|
|
disconnect con1;
|
|
connection con2;
|
|
# Reaping: ALTER FUNCTION f1 COMMENT 'test'
|
|
ERROR 42000: FUNCTION db1.f1 does not exist
|
|
disconnect con2;
|
|
connection default;
|
|
DROP FUNCTION f1;
|
|
#
|
|
# End of 5.5 tests
|
|
#
|