Bug #26654685 INDEX->ID == BTR_PAGE_GET_INDEX_ID(PAGE) AT

BTR_CUR_SEARCH_TO_NTH_LEVEL IN BTR/B

PROBLEM

During foreign key check , index id value is getting corrupted as the
check for index creation being aborted is not done.

FIX

Add the check , backported patch from 8.0 jimmy's patch

Reviewed by : Jimmy Yang<Jimmy.Yang@oracle.com>
RB: 19262

Author: Aakanksha Verma

mysql-test/suite/innodb/r/bulk_create_index_online.result

@@ -0,0 +1,17 @@
+CREATE TABLE parent (a INT PRIMARY KEY, b INT NOT NULL) ENGINE = InnoDB;
+INSERT INTO parent VALUES(1,2),(2,2);
+CREATE TABLE child (a INT PRIMARY KEY, b INT NOT NULL) ENGINE = InnoDB;
+INSERT INTO child VALUES (10, 2);
+SET DEBUG_SYNC = 'innodb_inplace_alter_table_enter SIGNAL start_create
+WAIT_FOR go_ahead';
+CREATE UNIQUE INDEX idx ON parent(b);;
+SET DEBUG_SYNC = 'now WAIT_FOR start_create';
+INSERT INTO parent VALUES(4, 2);
+SET DEBUG_SYNC = 'now SIGNAL go_ahead';
+ERROR 23000: Duplicate entry '2' for key 'idx'
+SET DEBUG_SYNC = 'now SIGNAL conn_add_fk';
+SET DEBUG_SYNC = 'now WAIT_FOR conn_add_fk';
+ALTER TABLE child ADD CONSTRAINT cfx FOREIGN KEY (b) REFERENCES parent(b);
+ERROR HY000: Cannot add foreign key constraint
+DROP TABLE child;
+DROP TABLE parent;

mysql-test/suite/innodb/t/bulk_create_index_online.test

@@ -0,0 +1,41 @@
+#
+## Bug #26654685   INDEX->ID == BTR_PAGE_GET_INDEX_ID(PAGE)
+##		   AT BTR_CUR_SEARCH_TO_NTH_LEVEL IN BTR/B
+#
+
+--source include/have_debug.inc
+--source include/have_debug_sync.inc
+--source include/count_sessions.inc
+--source include/have_innodb_16k.inc
+
+CREATE TABLE parent (a INT PRIMARY KEY, b INT NOT NULL) ENGINE = InnoDB;
+INSERT INTO parent VALUES(1,2),(2,2);
+CREATE TABLE child (a INT PRIMARY KEY, b INT NOT NULL) ENGINE = InnoDB;
+INSERT INTO child VALUES (10, 2);
+
+# This should rollback due to dup key
+SET DEBUG_SYNC = 'innodb_inplace_alter_table_enter SIGNAL start_create
+WAIT_FOR go_ahead';
+--send CREATE UNIQUE INDEX idx ON parent(b);
+
+# Make table ref_count > 1
+connect (con1,localhost,root,,);
+connection con1;
+SET DEBUG_SYNC = 'now WAIT_FOR start_create';
+INSERT INTO parent VALUES(4, 2);
+SET DEBUG_SYNC = 'now SIGNAL go_ahead';
+
+connection default;
+--error ER_DUP_ENTRY
+reap;
+SET DEBUG_SYNC = 'now SIGNAL conn_add_fk';
+
+connection con1;
+SET DEBUG_SYNC = 'now WAIT_FOR conn_add_fk';
+--error ER_CANNOT_ADD_FOREIGN
+ALTER TABLE child ADD CONSTRAINT cfx FOREIGN KEY (b) REFERENCES parent(b);
+
+--connection default
+DROP TABLE child;
+DROP TABLE parent;
+--disconnect con1

storage/innobase/dict/dict0dict.cc

@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 1996, 2017, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1996, 2018, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2012, Facebook Inc.
 
 This program is free software; you can redistribute it and/or modify it under
@@ -3378,7 +3378,10 @@ dict_foreign_find_index(
 		    && dict_foreign_qualify_index(
 			    table, col_names, columns, n_cols,
 			    index, types_idx,
-			    check_charsets, check_null)) {
+			    check_charsets, check_null)
+		    && (!(index->online_status ==
+				ONLINE_INDEX_ABORTED_DROPPED
+		       ||index->online_status == ONLINE_INDEX_ABORTED))) {
 			return(index);
 		}