@Evolving
public interface WriterCommitMessage
extends java.io.Serializable
DataWriter.commit()
and will be sent back to the driver side
as the input parameter of BatchWrite.commit(WriterCommitMessage[])
or
StreamingWrite.commit(long, WriterCommitMessage[])
.
This is an empty interface, data sources should define their own message class and use it when
generating messages at executor side and handling the messages at driver side.