After CREATE INDEX, InnoDB reports the index length as 0 if STATS_PERSISTENT=0

--source include/have_innodb.inc

--source include/have_innodb_16k.inc

--source include/have_sequence.inc

CREATE TABLE t1(a INT PRIMARY KEY, b varchar(1024))

ENGINE=InnoDB STATS_PERSISTENT=1;

INSERT INTO t1 SELECT seq,repeat('b',1024) FROM seq_1_to_16384;

SELECT INDEX_LENGTH from information_schema.TABLES WHERE

TABLE_SCHEMA = 'test' AND TABLE_NAME = 't1';

ALTER TABLE t1 add INDEX b (b(800));

SELECT INDEX_LENGTH from information_schema.TABLES WHERE

TABLE_SCHEMA = 'test' AND TABLE_NAME = 't1';

ALTER TABLE t1 add INDEX ba (b(800),a);

SELECT INDEX_LENGTH from information_schema.TABLES WHERE

TABLE_SCHEMA = 'test' AND TABLE_NAME = 't1';

DROP TABLE t1;

diff --git a/storage/innobase/dict/dict0dict.cc b/storage/innobase/dict/dict0dict.cc

index 6fe40c75555..90b344ee3ac 100644

--- a/storage/innobase/dict/dict0dict.cc

+++ b/storage/innobase/dict/dict0dict.cc

@@ -331,14 +331,12 @@ dict_table_close(

 	const bool last_handle = table->release();

-	/* Force persistent stats re-read upon next open of the table

+	/* Force statistics re-read upon next open of the table

 	so that FLUSH TABLE can be used to forcibly fetch stats from disk

 	if they have been manually modified. We reset table->stat_initialized

 	only if table reference count is 0 because we do not want too frequent

 	stats re-reads (e.g. in other cases than FLUSH TABLE). */

-	if (last_handle && strchr(table->name.m_name, '/') != NULL

-	    && dict_stats_is_persistent_enabled(table)) {

-

+	if (last_handle && strchr(table->name.m_name, '/')) {

 		dict_stats_deinit(table);

 	}