crash recovery

2016-07-02 17:56:07 5772 [Note] InnoDB: Database was not shutdown normally!
2016-07-02 17:56:07 5772 [Note] InnoDB: Starting crash recovery.
2016-07-02 17:56:07 5772 [Note] InnoDB: Reading tablespace information from the .ibd files...
2016-07-02 17:56:07 5772 [Note] InnoDB: Restoring possible half-written data pages
2016-07-02 17:56:07 5772 [Note] InnoDB: from the doublewrite buffer...
InnoDB: Last MySQL binlog file position 0 747, file name 1.000040
2016-07-02 17:56:10 5772 [Note] InnoDB: 128 rollback segment(s) are active.
2016-07-02 17:56:10 5772 [Note] InnoDB: Waiting for purge to start
2016-07-02 17:56:10 5772 [Note] InnoDB: 5.6.28 started; log sequence number 3715956
2016-07-02 17:56:10 5772 [Note] Recovering after a crash using 1
2016-07-02 17:56:10 5772 [Note] Starting crash recovery...
2016-07-02 17:56:10 5772 [Note] Crash recovery finished.