Prevent loading of tables that have unsupported features most notably

FTS indexes.

dict/dict0load.c

@@ -551,11 +551,13 @@ dict_load_fields(
 Loads definitions for table indexes. Adds them to the data dictionary
 cache. */
 static
-ibool
+ulint
 dict_load_indexes(
 /*==============*/
-				/* out: TRUE if ok, FALSE if corruption
-				of dictionary table */
+				/* out: DB_SUCCESS if ok, DB_CORRUPTION
+				if corruption of dictionary table or
+				DB_UNSUPPORTED if table has unknown index
+				type */
 	dict_table_t*	table,	/* in: table */
 	mem_heap_t*	heap)	/* in: memory heap for temporary storage */
 {
@@ -578,6 +580,7 @@ dict_load_indexes(
 	ibool		is_sys_table;
 	dulint		id;
 	mtr_t		mtr;
+	ulint		error = DB_SUCCESS;
 
 	ut_ad(mutex_own(&(dict_sys->mutex)));
 
@@ -624,10 +627,8 @@ dict_load_indexes(
 			dict_load_report_deleted_index(table->name,
 						       ULINT_UNDEFINED);
 
-			btr_pcur_close(&pcur);
-			mtr_commit(&mtr);
-
-			return(FALSE);
+			error = DB_CORRUPTION;
+			goto func_exit;
 		}
 
 		field = rec_get_nth_field_old(rec, 1, &len);
@@ -653,7 +654,18 @@ dict_load_indexes(
 		field = rec_get_nth_field_old(rec, 8, &len);
 		page_no = mach_read_from_4(field);
 
-		if (page_no == FIL_NULL) {
+		/* We check for unsupported types first, so that the
+		subsequent checks are relevant for the supported types. */
+		if (type & ~(DICT_CLUSTERED | DICT_UNIQUE)) {
+
+			fprintf(stderr,
+				"InnoDB: Error: unknown type %lu"
+				" of index %s of table %s\n",
+				(ulong) type, name_buf, table->name);
+
+			error = DB_UNSUPPORTED;
+			goto func_exit;
+		} else if (page_no == FIL_NULL) {
 
 			fprintf(stderr,
 				"InnoDB: Error: trying to load index %s"
@@ -661,13 +673,9 @@ dict_load_indexes(
 				"InnoDB: but the index tree has been freed!\n",
 				name_buf, table->name);
 
-			btr_pcur_close(&pcur);
-			mtr_commit(&mtr);
-
-			return(FALSE);
-		}
-
-		if ((type & DICT_CLUSTERED) == 0
+			error = DB_CORRUPTION;
+			goto func_exit;
+		} else if ((type & DICT_CLUSTERED) == 0
 			    && NULL == dict_table_get_first_index(table)) {
 
 			fprintf(stderr,
@@ -677,18 +685,14 @@ dict_load_indexes(
 				" is not clustered!\n",
 				name_buf, table->name);
 
-			btr_pcur_close(&pcur);
-			mtr_commit(&mtr);
-
-			return(FALSE);
-		}
-
-		if (is_sys_table
+			error = DB_CORRUPTION;
+			goto func_exit;
+		} else if (is_sys_table
 			   && ((type & DICT_CLUSTERED)
 			       || ((table == dict_sys->sys_tables)
 				   && (name_len == (sizeof "ID_IND") - 1)
-			    && (0 == ut_memcmp(name_buf, "ID_IND",
-					       name_len))))) {
+				   && (0 == ut_memcmp(name_buf,
+						      "ID_IND", name_len))))) {
 
 			/* The index was created in memory already at booting
 			of the database server */
@@ -704,10 +708,11 @@ dict_load_indexes(
 		btr_pcur_move_to_next_user_rec(&pcur, &mtr);
 	}
 
+func_exit:
 	btr_pcur_close(&pcur);
 	mtr_commit(&mtr);
 
-	return(TRUE);
+	return(error);
 }
 
 /************************************************************************
@@ -857,11 +862,20 @@ dict_load_table(
 
 	mem_heap_empty(heap);
 
-	dict_load_indexes(table, heap);
+	err = dict_load_indexes(table, heap);
 
+	/* If the force recovery flag is set, we open the table irrespective
+	of the error condition, since the user may want to dump data from the
+	clustered index. However we load the foreign key information only if
+	all indexes were loaded. */
+	if (err != DB_SUCCESS && !srv_force_recovery) {
+		dict_mem_table_free(table);
+		table = NULL;
+	} else if (err == DB_SUCCESS) {
 		err = dict_load_foreigns(table->name, TRUE);
+	}
 #if 0
-	if (err != DB_SUCCESS) {
+	if (err != DB_SUCCESS && table != NULL) {
 
 		mutex_enter(&dict_foreign_err_mutex);
 

handler/ha_innodb.cc

@@ -2334,13 +2334,18 @@ ha_innobase::open(
 
 	if (NULL == ib_table) {
 		ut_print_timestamp(stderr);
-		sql_print_error("Cannot find table %s from the internal data "
-				"dictionary\nof InnoDB though the .frm file "
-				"for the table exists. Maybe you\nhave "
-				"deleted and recreated InnoDB data files but "
-				"have forgotten\nto delete the corresponding "
-				".frm files of InnoDB tables, or you\n"
-				"have moved .frm files to another database?\n"
+		sql_print_error("Cannot find or open table %s from\n"
+				"the internal data dictionary of InnoDB "
+				"though the .frm file for the\n"
+				"table exists. Maybe you have deleted and "
+				"recreated InnoDB data\n"
+				"files but have forgotten to delete the "
+				"corresponding .frm files\n"
+				"of InnoDB tables, or you have moved .frm "
+				"files to another database?\n"
+				"or, the table contains indexes that this "
+				"version of the engine\n"
+				"doesn't support.\n"
 				"See http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n"
 				"how you can resolve the problem.\n",
 				norm_name);

include/db0err.h

@@ -61,12 +61,14 @@ Created 5/24/1996 Heikki Tuuri
 					activated by the operation would
 					lead to a duplicate key in some
 					table */
-
 #define DB_TOO_MANY_CONCURRENT_TRXS 47	/* when InnoDB runs out of the
 					preconfigured undo slots, this can
 					only happen when there are too many
 					concurrent transactions */
-
+#define DB_UNSUPPORTED		48	/* when InnoDB sees any artefact or
+					a feature that it can't recoginize or
+					work with e.g., FT indexes created by
+					a later version of the engine. */
 /* The following are partial failure codes */
 #define DB_FAIL			1000
 #define DB_OVERFLOW		1001