org.apache.cassandra.streaming

Interface StreamReceiver

All Known Implementing Classes:

CassandraStreamReceiver

public interface StreamReceiver

StreamReceiver acts as a staging area for incoming data. Received data ends up here, and is kept separate from the live data until all streams for a session have been received successfully

Method Summary

Modifier and Type	Method and Description
void	abort() Called when something went wrong with a stream session.
void	cleanup() Called after finished has returned and we've sent any messages to other nodes.
void	discardStream(IncomingStream stream) This is called when we've received stream data we can't add to the received set for some reason, usually when we've received data for a session which has been closed.
void	finished() Called when a stream session has succesfully completed.
void	received(IncomingStream stream) Called after we've finished receiving stream data.

Method Detail

received

void received(IncomingStream stream)

Called after we've finished receiving stream data. The data covered by the given stream should be kept isolated from the live dataset for it's table.

discardStream

void discardStream(IncomingStream stream)

This is called when we've received stream data we can't add to the received set for some reason, usually when we've received data for a session which has been closed. The data backing this stream should be deleted, and any resources associated with the given stream should be released.

abort

void abort()

Called when something went wrong with a stream session. All data associated with this receiver should be deleted, and any associated resources should be cleaned up

finished

void finished()

Called when a stream session has succesfully completed. All stream data being held by this receiver should be added to the live data sets for their respective tables before this method returns.

cleanup

void cleanup()

Called after finished has returned and we've sent any messages to other nodes. Mainly for signaling that mvs and cdc should cleanup.