MDEV-9918: [ERROR] mysqld got signal 11 during ALTER TABLE `name` COLUMN ADD

Problem was that in-place online alter table was used on a table
that had mismatch between MySQL frm file and InnoDB data dictionary.
Fixed so that traditional "Copy" method is used if the MySQL frm
and InnoDB data dictionary is not consistent.

8 files changed, 298 insertions, 82 deletions

diff --git a/storage/innobase/handler/ha_innodb.cc b/storage/innobase/handler/ha_innodb.cc
index bcd8a8890f8..42cbc1d7076 100644
--- a/storage/innobase/handler/ha_innodb.cc
+++ b/storage/innobase/handler/ha_innodb.cc
@@ -4,7 +4,7 @@ Copyright (c) 2000, 2015, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2008, 2009 Google Inc.
 Copyright (c) 2009, Percona Inc.
 Copyright (c) 2012, Facebook Inc.
-Copyright (c) 2013, 2014 SkySQL Ab. All Rights Reserved.
+Copyright (c) 2013, 2016, MariaDB Corporation.
 
 Portions of this file contain modifications contributed and copyrighted by
 Google, Inc. Those modifications are gratefully acknowledged and are described
@@ -5513,20 +5513,14 @@ table_opened:
 		prebuilt->clust_index_was_generated = FALSE;
 
 		if (UNIV_UNLIKELY(primary_key >= MAX_KEY)) {
-			sql_print_error("Table %s has a primary key in "
-					"InnoDB data dictionary, but not "
-					"in MySQL!", name);
+			ib_table->dict_frm_mismatch = DICT_FRM_NO_PK;
 
 			/* This mismatch could cause further problems
 			if not attended, bring this to the user's attention
 			by printing a warning in addition to log a message
 			in the errorlog */
-			push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
-					    ER_NO_SUCH_INDEX,
-					    "InnoDB: Table %s has a "
-					    "primary key in InnoDB data "
-					    "dictionary, but not in "
-					    "MySQL!", name);
+
+			ib_push_frm_error(thd, ib_table, table, 0, true);
 
 			/* If primary_key >= MAX_KEY, its (primary_key)
 			value could be out of bound if continue to index
@@ -5573,27 +5567,14 @@ table_opened:
 		}
 	} else {
 		if (primary_key != MAX_KEY) {
-			sql_print_error(
-				"Table %s has no primary key in InnoDB data "
-				"dictionary, but has one in MySQL! If you "
-				"created the table with a MySQL version < "
-				"3.23.54 and did not define a primary key, "
-				"but defined a unique key with all non-NULL "
-				"columns, then MySQL internally treats that "
-				"key as the primary key. You can fix this "
-				"error by dump + DROP + CREATE + reimport "
-				"of the table.", name);
+
+			ib_table->dict_frm_mismatch = DICT_NO_PK_FRM_HAS;
 
 			/* This mismatch could cause further problems
 			if not attended, bring this to the user attention
 			by printing a warning in addition to log a message
 			in the errorlog */
-			push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
-					    ER_NO_SUCH_INDEX,
-					    "InnoDB: Table %s has no "
-					    "primary key in InnoDB data "
-					    "dictionary, but has one in "
-					    "MySQL!", name);
+			ib_push_frm_error(thd, ib_table, table, 0, true);
 		}
 
 		prebuilt->clust_index_was_generated = TRUE;
@@ -11669,12 +11650,8 @@ ha_innobase::info_low(
 		}
 
 		if (table->s->keys != num_innodb_index) {
-			sql_print_error("InnoDB: Table %s contains %lu "
-					"indexes inside InnoDB, which "
-					"is different from the number of "
-					"indexes %u defined in the MySQL ",
-					ib_table->name, num_innodb_index,
-					table->s->keys);
+			ib_table->dict_frm_mismatch = DICT_FRM_INCONSISTENT_KEYS;
+			ib_push_frm_error(user_thd, ib_table, table, num_innodb_index, true);
 		}
 
 		if (!(flag & HA_STATUS_NO_LOCK)) {
@@ -11694,15 +11671,8 @@ ha_innobase::info_low(
 			dict_index_t* index = innobase_get_index(i);
 
 			if (index == NULL) {
-				sql_print_error("Table %s contains fewer "
-						"indexes inside InnoDB than "
-						"are defined in the MySQL "
-						".frm file. Have you mixed up "
-						".frm files from different "
-						"installations? See "
-						REFMAN
-						"innodb-troubleshooting.html\n",
-						ib_table->name);
+				ib_table->dict_frm_mismatch = DICT_FRM_INCONSISTENT_KEYS;
+				ib_push_frm_error(user_thd, ib_table, table, num_innodb_index, true);
 				break;
 			}
 
@@ -17874,3 +17844,96 @@ ib_push_warning(
 	my_free(buf);
 	va_end(args);
 }
+
+/********************************************************************//**
+Helper function to push frm mismatch error to error log and
+if needed to sql-layer. */
+UNIV_INTERN
+void
+ib_push_frm_error(
+/*==============*/
+	THD*		thd,		/*!< in: MySQL thd */
+	dict_table_t*	ib_table,	/*!< in: InnoDB table */
+	TABLE*		table,		/*!< in: MySQL table */
+	ulint		n_keys,		/*!< in: InnoDB #keys */
+	bool		push_warning)	/*!< in: print warning ? */
+{
+	switch (ib_table->dict_frm_mismatch) {
+	case DICT_FRM_NO_PK:
+		sql_print_error("Table %s has a primary key in "
+			"InnoDB data dictionary, but not "
+			"in MySQL!"
+			" Have you mixed up "
+			".frm files from different "
+			"installations? See "
+			REFMAN
+			"innodb-troubleshooting.html\n",
+			ib_table->name);
+
+		if (push_warning) {
+			push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
+				ER_NO_SUCH_INDEX,
+				"InnoDB: Table %s has a "
+				"primary key in InnoDB data "
+				"dictionary, but not in "
+				"MySQL!", ib_table->name);
+		}
+		break;
+	case DICT_NO_PK_FRM_HAS:
+		sql_print_error(
+				"Table %s has no primary key in InnoDB data "
+				"dictionary, but has one in MySQL! If you "
+				"created the table with a MySQL version < "
+				"3.23.54 and did not define a primary key, "
+				"but defined a unique key with all non-NULL "
+				"columns, then MySQL internally treats that "
+				"key as the primary key. You can fix this "
+				"error by dump + DROP + CREATE + reimport "
+				"of the table.", ib_table->name);
+
+		if (push_warning) {
+			push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
+				ER_NO_SUCH_INDEX,
+				"InnoDB: Table %s has no "
+				"primary key in InnoDB data "
+				"dictionary, but has one in "
+				"MySQL!",
+				ib_table->name);
+		}
+		break;
+
+	case DICT_FRM_INCONSISTENT_KEYS:
+		sql_print_error("InnoDB: Table %s contains %lu "
+			"indexes inside InnoDB, which "
+			"is different from the number of "
+			"indexes %u defined in the MySQL "
+			" Have you mixed up "
+			".frm files from different "
+			"installations? See "
+			REFMAN
+			"innodb-troubleshooting.html\n",
+			ib_table->name, n_keys,
+			table->s->keys);
+
+		if (push_warning) {
+			push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
+				ER_NO_SUCH_INDEX,
+				"InnoDB: Table %s contains %lu "
+				"indexes inside InnoDB, which "
+				"is different from the number of "
+				"indexes %u defined in the MySQL ",
+				ib_table->name, n_keys,
+				table->s->keys);
+		}
+		break;
+
+	case DICT_FRM_CONSISTENT:
+	default:
+		sql_print_error("InnoDB: Table %s is consistent "
+			"on InnoDB data dictionary and MySQL "
+			" FRM file.",
+			ib_table->name);
+		ut_error;
+		break;
+	}
+}
diff --git a/storage/innobase/handler/ha_innodb.h b/storage/innobase/handler/ha_innodb.h
index 5cebc425769..54ef548406f 100644
--- a/storage/innobase/handler/ha_innodb.h
+++ b/storage/innobase/handler/ha_innodb.h
@@ -1,6 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 2000, 2012, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2013, 2016, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -640,3 +641,16 @@ innobase_copy_frm_flags_from_table_share(
 /*=====================================*/
 	dict_table_t*		innodb_table,	/*!< in/out: InnoDB table */
 	const TABLE_SHARE*	table_share);	/*!< in: table share */
+
+/********************************************************************//**
+Helper function to push frm mismatch error to error log and
+if needed to sql-layer. */
+UNIV_INTERN
+void
+ib_push_frm_error(
+/*==============*/
+	THD*		thd,		/*!< in: MySQL thd */
+	dict_table_t*	ib_table,	/*!< in: InnoDB table */
+	TABLE*		table,		/*!< in: MySQL table */
+	ulint		n_keys,		/*!< in: InnoDB #keys */
+	bool		push_warning);	/*!< in: print warning ? */
diff --git a/storage/innobase/handler/handler0alter.cc b/storage/innobase/handler/handler0alter.cc
index 476e841b892..1848ac6db4f 100644
--- a/storage/innobase/handler/handler0alter.cc
+++ b/storage/innobase/handler/handler0alter.cc
@@ -435,6 +435,20 @@ ha_innobase::check_if_supported_inplace_alter(
 		}
 	}
 
+	ulint n_indexes = UT_LIST_GET_LEN((prebuilt->table)->indexes);
+
+	/* If InnoDB dictionary and MySQL frm file are not consistent
+	use "Copy" method. */
+	if (prebuilt->table->dict_frm_mismatch) {
+
+		ha_alter_info->unsupported_reason = innobase_get_err_msg(
+			ER_NO_SUCH_INDEX);
+		ib_push_frm_error(user_thd, prebuilt->table, altered_table,
+			n_indexes, true);
+
+		DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
+	}
+
 	/* We should be able to do the operation in-place.
 	See if we can do it online (LOCK=NONE). */
 	bool	online = true;
diff --git a/storage/innobase/include/dict0mem.h b/storage/innobase/include/dict0mem.h
index 5f6811f0719..7a84e4e991d 100644
--- a/storage/innobase/include/dict0mem.h
+++ b/storage/innobase/include/dict0mem.h
@@ -2,6 +2,7 @@
 
 Copyright (c) 1996, 2015, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2012, Facebook Inc.
+Copyright (c) 2015, 2016, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -903,6 +904,18 @@ if table->memcached_sync_count == DICT_TABLE_IN_DDL means there's DDL running on
 the table, DML from memcached will be blocked. */
 #define DICT_TABLE_IN_DDL -1
 
+/** These are used when MySQL FRM and InnoDB data dictionary are
+in inconsistent state. */
+typedef enum {
+	DICT_FRM_CONSISTENT = 0,	/*!< Consistent state */
+	DICT_FRM_NO_PK = 1,		/*!< MySQL has no primary key
+					but InnoDB dictionary has
+					non-generated one. */
+	DICT_NO_PK_FRM_HAS = 2,		/*!< MySQL has primary key but
+					InnoDB dictionary has not. */
+	DICT_FRM_INCONSISTENT_KEYS = 3	/*!< Key count mismatch */
+} dict_frm_t;
+
 /** Data structure for a database table.  Most fields will be
 initialized to 0, NULL or FALSE in dict_mem_table_create(). */
 struct dict_table_t{
@@ -961,6 +974,10 @@ struct dict_table_t{
 				/*!< True if the table belongs to a system
 				database (mysql, information_schema or
 				performance_schema) */
+	dict_frm_t	dict_frm_mismatch;
+				/*!< !DICT_FRM_CONSISTENT==0 if data
+				dictionary information and
+				MySQL FRM information mismatch. */
 #ifndef UNIV_HOTBACKUP
 	hash_node_t	name_hash; /*!< hash chain node */
 	hash_node_t	id_hash; /*!< hash chain node */
diff --git a/storage/xtradb/handler/ha_innodb.cc b/storage/xtradb/handler/ha_innodb.cc
index a3e9166c15e..4dd764cac2c 100644
--- a/storage/xtradb/handler/ha_innodb.cc
+++ b/storage/xtradb/handler/ha_innodb.cc
@@ -4,7 +4,7 @@ Copyright (c) 2000, 2015, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2008, 2009 Google Inc.
 Copyright (c) 2009, Percona Inc.
 Copyright (c) 2012, Facebook Inc.
-Copyright (c) 2013, 2014 SkySQL Ab. All Rights Reserved.
+Copyright (c) 2013, 2016, MariaDB Corporation.
 
 Portions of this file contain modifications contributed and copyrighted by
 Google, Inc. Those modifications are gratefully acknowledged and are described
@@ -5950,20 +5950,14 @@ table_opened:
 		prebuilt->clust_index_was_generated = FALSE;
 
 		if (UNIV_UNLIKELY(primary_key >= MAX_KEY)) {
-			sql_print_error("Table %s has a primary key in "
-					"InnoDB data dictionary, but not "
-					"in MySQL!", name);
+			ib_table->dict_frm_mismatch = DICT_FRM_NO_PK;
 
 			/* This mismatch could cause further problems
 			if not attended, bring this to the user's attention
 			by printing a warning in addition to log a message
 			in the errorlog */
-			push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
-					    ER_NO_SUCH_INDEX,
-					    "InnoDB: Table %s has a "
-					    "primary key in InnoDB data "
-					    "dictionary, but not in "
-					    "MySQL!", name);
+
+			ib_push_frm_error(thd, ib_table, table, 0, true);
 
 			/* If primary_key >= MAX_KEY, its (primary_key)
 			value could be out of bound if continue to index
@@ -6010,27 +6004,14 @@ table_opened:
 		}
 	} else {
 		if (primary_key != MAX_KEY) {
-			sql_print_error(
-				"Table %s has no primary key in InnoDB data "
-				"dictionary, but has one in MySQL! If you "
-				"created the table with a MySQL version < "
-				"3.23.54 and did not define a primary key, "
-				"but defined a unique key with all non-NULL "
-				"columns, then MySQL internally treats that "
-				"key as the primary key. You can fix this "
-				"error by dump + DROP + CREATE + reimport "
-				"of the table.", name);
+
+			ib_table->dict_frm_mismatch = DICT_NO_PK_FRM_HAS;
 
 			/* This mismatch could cause further problems
 			if not attended, bring this to the user attention
 			by printing a warning in addition to log a message
 			in the errorlog */
-			push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
-					    ER_NO_SUCH_INDEX,
-					    "InnoDB: Table %s has no "
-					    "primary key in InnoDB data "
-					    "dictionary, but has one in "
-					    "MySQL!", name);
+			ib_push_frm_error(thd, ib_table, table, 0, true);
 		}
 
 		prebuilt->clust_index_was_generated = TRUE;
@@ -12244,12 +12225,8 @@ ha_innobase::info_low(
 		}
 
 		if (table->s->keys != num_innodb_index) {
-			sql_print_error("InnoDB: Table %s contains %lu "
-					"indexes inside InnoDB, which "
-					"is different from the number of "
-					"indexes %u defined in the MySQL ",
-					ib_table->name, num_innodb_index,
-					table->s->keys);
+			ib_table->dict_frm_mismatch = DICT_FRM_INCONSISTENT_KEYS;
+			ib_push_frm_error(user_thd, ib_table, table, num_innodb_index, true);
 		}
 
 		if (!(flag & HA_STATUS_NO_LOCK)) {
@@ -12269,15 +12246,8 @@ ha_innobase::info_low(
 			dict_index_t* index = innobase_get_index(i);
 
 			if (index == NULL) {
-				sql_print_error("Table %s contains fewer "
-						"indexes inside InnoDB than "
-						"are defined in the MySQL "
-						".frm file. Have you mixed up "
-						".frm files from different "
-						"installations? See "
-						REFMAN
-						"innodb-troubleshooting.html\n",
-						ib_table->name);
+				ib_table->dict_frm_mismatch = DICT_FRM_INCONSISTENT_KEYS;
+				ib_push_frm_error(user_thd, ib_table, table, num_innodb_index, true);
 				break;
 			}
 
@@ -19182,3 +19152,96 @@ ib_push_warning(
 	my_free(buf);
 	va_end(args);
 }
+
+/********************************************************************//**
+Helper function to push frm mismatch error to error log and
+if needed to sql-layer. */
+UNIV_INTERN
+void
+ib_push_frm_error(
+/*==============*/
+	THD*		thd,		/*!< in: MySQL thd */
+	dict_table_t*	ib_table,	/*!< in: InnoDB table */
+	TABLE*		table,		/*!< in: MySQL table */
+	ulint		n_keys,		/*!< in: InnoDB #keys */
+	bool		push_warning)	/*!< in: print warning ? */
+{
+	switch (ib_table->dict_frm_mismatch) {
+	case DICT_FRM_NO_PK:
+		sql_print_error("Table %s has a primary key in "
+			"InnoDB data dictionary, but not "
+			"in MySQL!"
+			" Have you mixed up "
+			".frm files from different "
+			"installations? See "
+			REFMAN
+			"innodb-troubleshooting.html\n",
+			ib_table->name);
+
+		if (push_warning) {
+			push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
+				ER_NO_SUCH_INDEX,
+				"InnoDB: Table %s has a "
+				"primary key in InnoDB data "
+				"dictionary, but not in "
+				"MySQL!", ib_table->name);
+		}
+		break;
+	case DICT_NO_PK_FRM_HAS:
+		sql_print_error(
+				"Table %s has no primary key in InnoDB data "
+				"dictionary, but has one in MySQL! If you "
+				"created the table with a MySQL version < "
+				"3.23.54 and did not define a primary key, "
+				"but defined a unique key with all non-NULL "
+				"columns, then MySQL internally treats that "
+				"key as the primary key. You can fix this "
+				"error by dump + DROP + CREATE + reimport "
+				"of the table.", ib_table->name);
+
+		if (push_warning) {
+			push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
+				ER_NO_SUCH_INDEX,
+				"InnoDB: Table %s has no "
+				"primary key in InnoDB data "
+				"dictionary, but has one in "
+				"MySQL!",
+				ib_table->name);
+		}
+		break;
+
+	case DICT_FRM_INCONSISTENT_KEYS:
+		sql_print_error("InnoDB: Table %s contains %lu "
+			"indexes inside InnoDB, which "
+			"is different from the number of "
+			"indexes %u defined in the MySQL "
+			" Have you mixed up "
+			".frm files from different "
+			"installations? See "
+			REFMAN
+			"innodb-troubleshooting.html\n",
+			ib_table->name, n_keys,
+			table->s->keys);
+
+		if (push_warning) {
+			push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
+				ER_NO_SUCH_INDEX,
+				"InnoDB: Table %s contains %lu "
+				"indexes inside InnoDB, which "
+				"is different from the number of "
+				"indexes %u defined in the MySQL ",
+				ib_table->name, n_keys,
+				table->s->keys);
+		}
+		break;
+
+	case DICT_FRM_CONSISTENT:
+	default:
+		sql_print_error("InnoDB: Table %s is consistent "
+			"on InnoDB data dictionary and MySQL "
+			" FRM file.",
+			ib_table->name);
+		ut_error;
+		break;
+	}
+}
diff --git a/storage/xtradb/handler/ha_innodb.h b/storage/xtradb/handler/ha_innodb.h
index 823d136d54b..093c9ce82c0 100644
--- a/storage/xtradb/handler/ha_innodb.h
+++ b/storage/xtradb/handler/ha_innodb.h
@@ -1,6 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 2000, 2012, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2013, 2016, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -645,3 +646,16 @@ innobase_copy_frm_flags_from_table_share(
 /*=====================================*/
 	dict_table_t*		innodb_table,	/*!< in/out: InnoDB table */
 	const TABLE_SHARE*	table_share);	/*!< in: table share */
+
+/********************************************************************//**
+Helper function to push frm mismatch error to error log and
+if needed to sql-layer. */
+UNIV_INTERN
+void
+ib_push_frm_error(
+/*==============*/
+	THD*		thd,		/*!< in: MySQL thd */
+	dict_table_t*	ib_table,	/*!< in: InnoDB table */
+	TABLE*		table,		/*!< in: MySQL table */
+	ulint		n_keys,		/*!< in: InnoDB #keys */
+	bool		push_warning);	/*!< in: print warning ? */
diff --git a/storage/xtradb/handler/handler0alter.cc b/storage/xtradb/handler/handler0alter.cc
index 4f1e37926e5..fc5a4257b59 100644
--- a/storage/xtradb/handler/handler0alter.cc
+++ b/storage/xtradb/handler/handler0alter.cc
@@ -435,6 +435,20 @@ ha_innobase::check_if_supported_inplace_alter(
 		}
 	}
 
+	ulint n_indexes = UT_LIST_GET_LEN((prebuilt->table)->indexes);
+
+	/* If InnoDB dictionary and MySQL frm file are not consistent
+	use "Copy" method. */
+	if (prebuilt->table->dict_frm_mismatch) {
+
+		ha_alter_info->unsupported_reason = innobase_get_err_msg(
+			ER_NO_SUCH_INDEX);
+		ib_push_frm_error(user_thd, prebuilt->table, altered_table,
+			n_indexes, true);
+
+		DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
+	}
+
 	/* We should be able to do the operation in-place.
 	See if we can do it online (LOCK=NONE). */
 	bool	online = true;
diff --git a/storage/xtradb/include/dict0mem.h b/storage/xtradb/include/dict0mem.h
index b8df96acc30..e9234b8c14d 100644
--- a/storage/xtradb/include/dict0mem.h
+++ b/storage/xtradb/include/dict0mem.h
@@ -2,6 +2,7 @@
 
 Copyright (c) 1996, 2015, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2012, Facebook Inc.
+Copyright (c) 2015, 2016, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -914,6 +915,18 @@ if table->memcached_sync_count == DICT_TABLE_IN_DDL means there's DDL running on
 the table, DML from memcached will be blocked. */
 #define DICT_TABLE_IN_DDL -1
 
+/** These are used when MySQL FRM and InnoDB data dictionary are
+in inconsistent state. */
+typedef enum {
+	DICT_FRM_CONSISTENT = 0,	/*!< Consistent state */
+	DICT_FRM_NO_PK = 1,		/*!< MySQL has no primary key
+					but InnoDB dictionary has
+					non-generated one. */
+	DICT_NO_PK_FRM_HAS = 2,		/*!< MySQL has primary key but
+					InnoDB dictionary has not. */
+	DICT_FRM_INCONSISTENT_KEYS = 3	/*!< Key count mismatch */
+} dict_frm_t;
+
 /** Data structure for a database table.  Most fields will be
 initialized to 0, NULL or FALSE in dict_mem_table_create(). */
 struct dict_table_t{
@@ -972,6 +985,10 @@ struct dict_table_t{
 				/*!< True if the table belongs to a system
 				database (mysql, information_schema or
 				performance_schema) */
+	dict_frm_t	dict_frm_mismatch;
+				/*!< !DICT_FRM_CONSISTENT==0 if data
+				dictionary information and
+				MySQL FRM information mismatch. */
 #ifndef UNIV_HOTBACKUP
 	hash_node_t	name_hash; /*!< hash chain node */
 	hash_node_t	id_hash; /*!< hash chain node */