Applying InnoDB snapshot 5.1-ss5282, Fixes BUG#44030

1. Fixes BUG#44030 - Error: (1500) Couldn't read the MAX(ID) autoinc value 
                     from the index (PRIMARY)

2. Disables the innodb-autoinc test for innodb plugin temporarily.
   The testcase for this bug has different result file for InnoDB plugin.
   Should add the testcase to Innodb suite with a different result file.

Detailed revision comments:

r5243 | sunny | 2009-06-04 03:17:14 +0300 (Thu, 04 Jun 2009) | 14 lines
branches/5.1: When the InnoDB and MySQL data dictionaries go out of sync, before
the bug fix we would assert on missing autoinc columns. With this fix we allow
MySQL to open the table but set the next autoinc value for the column to the
MAX value. This effectively disables the next value generation. INSERTs will
fail with a generic AUTOINC failure. However, the user should be able to
read/dump the table, set the column values explicitly, use ALTER TABLE to
set the next autoinc value and/or sync the two data dictionaries to resume
normal operations.

Fix Bug#44030 Error: (1500) Couldn't read the MAX(ID) autoinc value from the
index (PRIMARY)

rb://118

r5252 | sunny | 2009-06-04 10:16:24 +0300 (Thu, 04 Jun 2009) | 2 lines
branches/5.1: The version of the result file checked in was broken in r5243.

r5259 | vasil | 2009-06-05 10:29:16 +0300 (Fri, 05 Jun 2009) | 7 lines
branches/5.1:

Remove the word "Error" from the printout because the mysqltest suite
interprets it as an error and thus the innodb-autoinc test fails.

Approved by:	Sunny (via IM)
r5466 | vasil | 2009-07-02 10:46:45 +0300 (Thu, 02 Jul 2009) | 6 lines
branches/5.1:

Adjust the failing innodb-autoinc test to conform to the latest behavior
of the MySQL code. The idea and the comment in innodb-autoinc.test come
from Sunny.

mysql-test/lib/mtr_cases.pm

@@ -495,6 +495,7 @@ sub collect_one_suite($)
       # Exceptions
       next if ($test->{'name'} eq 'main.innodb'); # Failed with wrong errno (fk)
       next if ($test->{'name'} eq 'main.index_merge_innodb'); # Explain diff
+      next if ($test->{'name'} eq 'main.innodb-autoinc'); # Need dfrnt result file
       # innodb_file_per_table is rw with innodb_plugin
       next if ($test->{'name'} eq 'sys_vars.innodb_file_per_table_basic');
       # innodb_lock_wait_timeout is rw with innodb_plugin

mysql-test/r/innodb-autoinc.result

@@ -867,3 +867,25 @@ INSERT INTO t2 SELECT NULL FROM t1;
 Got one of the listed errors
 DROP TABLE t1;
 DROP TABLE t2;
+CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (null);
+INSERT INTO t1 VALUES (null);
+ALTER TABLE t1 CHANGE c1 d1 INT NOT NULL AUTO_INCREMENT;
+SELECT * FROM t1;
+d1
+1
+3
+SELECT * FROM t1;
+d1
+1
+3
+INSERT INTO t1 VALUES(null);
+ALTER TABLE t1 AUTO_INCREMENT = 3;
+INSERT INTO t1 VALUES(null);
+SELECT * FROM t1;
+d1
+1
+3
+4
+5
+DROP TABLE t1;

mysql-test/t/innodb-autoinc.test

@@ -478,3 +478,27 @@ INSERT INTO t2 SELECT c1 FROM t1;
 INSERT INTO t2 SELECT NULL FROM t1;
 DROP TABLE t1;
 DROP TABLE t2;
+#
+# 44030: Error: (1500) Couldn't read the MAX(ID) autoinc value from
+# the index (PRIMARY)
+# This test requires a restart of the server
+CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (null);
+INSERT INTO t1 VALUES (null);
+ALTER TABLE t1 CHANGE c1 d1 INT NOT NULL AUTO_INCREMENT;
+SELECT * FROM t1;
+# Restart the server
+-- source include/restart_mysqld.inc
+# The MySQL and InnoDB data dictionaries should now be out of sync.
+# The select should print message to the error log
+SELECT * FROM t1;
+# MySQL have made a change (http://lists.mysql.com/commits/75268) that no
+# longer results in the two data dictionaries being out of sync. If they
+# revert their changes then this check for ER_AUTOINC_READ_FAILED will need
+# to be enabled.
+# -- error ER_AUTOINC_READ_FAILED,1467
+INSERT INTO t1 VALUES(null);
+ALTER TABLE t1 AUTO_INCREMENT = 3;
+INSERT INTO t1 VALUES(null);
+SELECT * FROM t1;
+DROP TABLE t1;

storage/innobase/handler/ha_innodb.cc

@@ -2515,12 +2515,28 @@ ha_innobase::innobase_initialize_autoinc()
 
 		dict_table_autoinc_initialize(innodb_table, auto_inc);
 
-	} else {
+	} else if (error == DB_RECORD_NOT_FOUND) {
 		ut_print_timestamp(stderr);
-		fprintf(stderr, "  InnoDB: Error: (%lu) Couldn't read "
-			"the MAX(%s) autoinc value from the "
-			"index (%s).\n", error, col_name, index->name);
-	}
+		fprintf(stderr, "  InnoDB: MySQL and InnoDB data "
+			"dictionaries are out of sync.\n"
+			"InnoDB: Unable to find the AUTOINC column %s in the "
+			"InnoDB table %s.\n"
+			"InnoDB: We set the next AUTOINC column value to the "
+			"maximum possible value,\n"
+			"InnoDB: in effect disabling the AUTOINC next value "
+			"generation.\n"
+			"InnoDB: You can either set the next AUTOINC value "
+			"explicitly using ALTER TABLE\n"
+			"InnoDB: or fix the data dictionary by recreating "
+			"the table.\n",
+			col_name, index->table->name);
+
+		auto_inc = 0xFFFFFFFFFFFFFFFFULL;
+
+		dict_table_autoinc_initialize(innodb_table, auto_inc);
+
+		error = DB_SUCCESS;
+	} /* else other errors are still fatal */
 
 	return(ulong(error));
 }
@@ -2731,7 +2747,6 @@ retry:
 		if (dict_table_autoinc_read(prebuilt->table) == 0) {
 
 			error = innobase_initialize_autoinc();
-			/* Should always succeed! */
 			ut_a(error == DB_SUCCESS);
 		}