org.apache.cassandra.streaming

Class StreamTransferTask

java.lang.Object

org.apache.cassandra.streaming.StreamTask

org.apache.cassandra.streaming.StreamTransferTask

public class StreamTransferTask
extends StreamTask

StreamTransferTask sends sections of SSTable files in certain ColumnFamily.

Field Summary

Fields inherited from class org.apache.cassandra.streaming.StreamTask

cfId, session

Constructor Summary

Constructors

Constructor and Description
StreamTransferTask(StreamSession session, java.util.UUID cfId)

Method Summary

Methods

Modifier and Type	Method and Description
void	abort() Abort the task.
void	addTransferFile(SSTableReader sstable, long estimatedKeys, java.util.List<Pair<java.lang.Long,java.lang.Long>> sections)
void	complete(int sequenceNumber) Received ACK for file at sequenceNumber.
OutgoingFileMessage	createMessageForRetry(int sequenceNumber)
java.util.Collection<OutgoingFileMessage>	getFileMessages()
int	getTotalNumberOfFiles()
long	getTotalSize()
java.util.concurrent.ScheduledFuture	scheduleTimeout(int sequenceNumber, long time, java.util.concurrent.TimeUnit unit) Schedule timeout task to release reference for file sent.

Methods inherited from class org.apache.cassandra.streaming.StreamTask

getSummary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StreamTransferTask

public StreamTransferTask(StreamSession session,
                  java.util.UUID cfId)

Method Detail

addTransferFile

public void addTransferFile(SSTableReader sstable,
                   long estimatedKeys,
                   java.util.List<Pair<java.lang.Long,java.lang.Long>> sections)

complete

public void complete(int sequenceNumber)

Received ACK for file at sequenceNumber.

Parameters:

sequenceNumber - sequence number of file

abort

public void abort()

Description copied from class: StreamTask

Abort the task. Subclass should implement cleaning up resources.

Specified by:

abort in class StreamTask

getTotalNumberOfFiles

public int getTotalNumberOfFiles()

Specified by:

getTotalNumberOfFiles in class StreamTask

Returns:

total number of files this task receives/streams.

getTotalSize

public long getTotalSize()

Specified by:

getTotalSize in class StreamTask

Returns:

total bytes expected to receive

getFileMessages

public java.util.Collection<OutgoingFileMessage> getFileMessages()

createMessageForRetry

public OutgoingFileMessage createMessageForRetry(int sequenceNumber)

scheduleTimeout

public java.util.concurrent.ScheduledFuture scheduleTimeout(int sequenceNumber,
                                                   long time,
                                                   java.util.concurrent.TimeUnit unit)

Schedule timeout task to release reference for file sent. When not receiving ACK after sending to receiver in given time, the task will release reference.

Parameters:

sequenceNumber - sequence number of file sent.

time - time to timeout

unit - unit of given time

Returns:

scheduled future for timeout task