Merge 10.1 into 10.2

storage/innobase/row/row0mysql.cc

 /*****************************************************************************
 
 Copyright (c) 2000, 2018, Oracle and/or its affiliates. All Rights Reserved.
-Copyright (c) 2015, 2018, MariaDB Corporation.
+Copyright (c) 2015, 2019, 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
@@ -3377,8 +3377,11 @@ row_drop_table_for_mysql(
 			calling btr_search_drop_page_hash_index() while we
 			hold the InnoDB dictionary lock, we will drop any
 			adaptive hash index entries upfront. */
+			bool immune = is_temp_name
+				|| strstr(table->name.m_name, "/FTS");
+
 			while (buf_LRU_drop_page_hash_for_tablespace(table)) {
-				if ((!is_temp_name && trx_is_interrupted(trx))
+				if ((!immune && trx_is_interrupted(trx))
 				    || srv_shutdown_state
 				    != SRV_SHUTDOWN_NONE) {
 					err = DB_INTERRUPTED;

storage/xtradb/row/row0mysql.cc

 /*****************************************************************************
 
 Copyright (c) 2000, 2018, Oracle and/or its affiliates. All Rights Reserved.
-Copyright (c) 2015, 2018, MariaDB Corporation.
+Copyright (c) 2015, 2019, 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
@@ -4235,7 +4235,9 @@ row_drop_table_for_mysql(
 		hold the InnoDB dictionary lock, we will drop any
 		adaptive hash index entries upfront. */
 		const bool is_temp = dict_table_is_temporary(table)
-			|| strstr(tablename_minus_db, tmp_file_prefix);
+			|| strncmp(tablename_minus_db, tmp_file_prefix,
+				   tmp_file_prefix_length)
+			|| strncmp(tablename_minus_db, "FTS_", 4);
 		while (buf_LRU_drop_page_hash_for_tablespace(table)) {
 			if ((!is_temp && trx_is_interrupted(trx))
 			    || srv_shutdown_state != SRV_SHUTDOWN_NONE) {