Following TRUNCATE TABLE on an NDB table, its AUTO_INCREMENT ID was not reset on an SQL node not performing binary logging. (Bug #14845851)

The NDBFS block's OM_SYNC flag is intended to make sure that all FSWRITEREQ signals used for a given file are synchronized, but was ignored by platforms that do not support O_SYNC, meaning that this feature did not behave properly on those platforms. Now the synchronization flag is used on those platforms that do not support O_SYNC. (Bug #76975, Bug #21049554)