In crash recovery
InnoDB now prints the
progress in percents of a transaction rollback.
Fixed a bug/feature: If your application program used mysql_use_result(), and used >= 2 connections to send SQL queries, it could deadlock on the adaptive hash S-latch in btr0sea.c. Now mysqld releases the S-latch whenever it passes data from a SELECT to the client.
Fixed a bug: MySQL could erroneously return 'Empty set' if
InnoDB estimated an index range size to 0
records though the range was not empty; MySQL also failed to
do the next-key locking in the case of an empty index range.