pyflink.datastream.functions.NullByteKeySelector

class NullByteKeySelector

Used as a dummy KeySelector to allow using keyed operators for non-keyed use cases. Essentially, it gives all incoming records the same key, which is a (byte) 0 value.

Methods

close()
get_key(value)	User-defined function that deterministically extracts the key from an object.
open(runtime_context)