bk commit into 5.0 tree (jan:1.2006) BUG#12669

[Jan Lindstrom]

Below is the list of changes that have just been committed into a local
5.0 repository of jan. When jan does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
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see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html

ChangeSet
  1.2006 05/09/29 08:34:38 jan@stripped +3 -0
  Fixed a bug checksum table locks the InnoDB table and does not use a
  consistent read (Bug #12669). This fixes InnoDB part of the bug.

  sql/ha_innodb.cc
    1.263 05/09/29 08:34:14 jan@stripped +5 -0
    Use consistent read for checksum table.

  mysql-test/t/innodb.test
    1.112 05/09/29 08:34:14 jan@stripped +39 -0
    Addeed a test case for a checksum bug #12669.

  mysql-test/r/innodb.result
    1.138 05/09/29 08:34:14 jan@stripped +28 -0
    Added results for a checksum test.

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	jan
# Host:	hundin.mysql.fi
# Root:	/home/jan/mysql-5.0

--- 1.137/mysql-test/r/innodb.result	2005-09-23 16:44:23 +03:00
+++ 1.138/mysql-test/r/innodb.result	2005-09-29 08:34:14 +03:00
@@ -2616,3 +2616,31 @@
 INSERT INTO t2 VALUES(3);
 ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test/t2`,
CONSTRAINT `c1` FOREIGN KEY (`v`) REFERENCES `t1` (`id`))
 DROP TABLE t2;
+create table test_checksum(a int not null) engine=innodb DEFAULT CHARSET=latin1;
+insert into test_checksum values (1),(2);
+set autocommit=0;
+checksum table test_checksum;
+Table	Checksum
+test.test_checksum	1531596814
+insert into test_checksum values(3);
+checksum table test_checksum;
+Table	Checksum
+test.test_checksum	1531596814
+commit;
+checksum table test_checksum;
+Table	Checksum
+test.test_checksum	2050879373
+commit;
+drop table test_checksum;
+create table test_checksum(a int not null) engine=innodb DEFAULT CHARSET=latin1;
+insert into test_checksum values (1),(2);
+set autocommit=1;
+checksum table test_checksum;
+Table	Checksum
+test.test_checksum	1531596814
+set autocommit=1;
+insert into test_checksum values(3);
+checksum table test_checksum;
+Table	Checksum
+test.test_checksum	2050879373
+drop table test_checksum;

--- 1.111/mysql-test/t/innodb.test	2005-09-23 16:44:23 +03:00
+++ 1.112/mysql-test/t/innodb.test	2005-09-29 08:34:14 +03:00
@@ -1564,3 +1564,42 @@
 INSERT INTO t2 VALUES(3);
 
 DROP TABLE t2;
+#
+# Test that checksum table uses a consistent read Bug #12669
+#
+connect (a,localhost,root,,);
+connect (b,localhost,root,,);
+connection a;
+create table test_checksum(a int not null) engine=innodb DEFAULT CHARSET=latin1;
+insert into test_checksum values (1),(2);
+set autocommit=0;
+checksum table test_checksum;
+connection b;
+insert into test_checksum values(3);
+connection a;
+#
+# Here checksum should not see insert
+#
+checksum table test_checksum;
+connection a;
+commit;
+checksum table test_checksum;
+commit;
+drop table test_checksum;
+#
+# autocommit = 1
+#
+connection a;
+create table test_checksum(a int not null) engine=innodb DEFAULT CHARSET=latin1;
+insert into test_checksum values (1),(2);
+set autocommit=1;
+checksum table test_checksum;
+connection b;
+set autocommit=1;
+insert into test_checksum values(3);
+connection a;
+#
+# Here checksum sees insert
+#
+checksum table test_checksum;
+drop table test_checksum;

--- 1.262/sql/ha_innodb.cc	2005-09-28 14:26:26 +03:00
+++ 1.263/sql/ha_innodb.cc	2005-09-29 08:34:14 +03:00
@@ -6688,6 +6688,11 @@
 
 			prebuilt->select_lock_type = LOCK_NONE;
 			prebuilt->stored_select_lock_type = LOCK_NONE;
+		} else if (thd->lex->sql_command == SQLCOM_CHECKSUM) {
+			/* Use consistent read for checksum table */
+
+			prebuilt->select_lock_type = LOCK_NONE;
+			prebuilt->stored_select_lock_type = LOCK_NONE;
 		} else {
 			prebuilt->select_lock_type = LOCK_S;
 			prebuilt->stored_select_lock_type = LOCK_S;