org.apache.flink.streaming.runtime.operators

Class BucketStreamSortOperator<T>

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractStreamOperator<T>

org.apache.flink.streaming.runtime.operators.BucketStreamSortOperator<T>

Type Parameters:

T - The type of the elements on which this operator works.

All Implemented Interfaces:

Serializable, OneInputStreamOperator<T,T>, StreamOperator<T>

public class BucketStreamSortOperator<T>
extends AbstractStreamOperator<T>
implements OneInputStreamOperator<T,T>

An operator that can sort a stream based on timestamps. Arriving elements will be put into buckets based on their timestamp. Sorting and emission of sorted elements happens once the watermark passes the end of a bucket.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

chainingStrategy, LOG, output

Constructor Summary

Constructors

Constructor and Description
BucketStreamSortOperator(long interval) Creates a new sorting operator that creates buckets with the given interval.

Method Summary

Methods

Modifier and Type	Method and Description
void	open() This method is called immediately before any elements are processed, it should contain the operator's initialization logic.
void	processElement(StreamRecord<T> record) Processes one element that arrived at this operator.
void	processWatermark(Watermark mark) Processes a Watermark.

Methods inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

close, createKeyValueState, createKeyValueState, disableInputCopy, dispose, getChainingStrategy, getContainingTask, getExecutionConfig, getOperatorConfig, getRuntimeContext, getStateBackend, getUserCodeClassloader, isInputCopyingDisabled, notifyOfCompletedCheckpoint, registerTimer, restoreState, setChainingStrategy, setKeyContext, setKeyContextElement, setup, snapshotOperatorState

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.streaming.api.operators.StreamOperator

close, dispose, getChainingStrategy, isInputCopyingDisabled, notifyOfCompletedCheckpoint, restoreState, setChainingStrategy, setKeyContextElement, setup, snapshotOperatorState

Constructor Detail

BucketStreamSortOperator

public BucketStreamSortOperator(long interval)

Creates a new sorting operator that creates buckets with the given interval.

Parameters:

interval - The size (in time) of one bucket.

Method Detail

open

public void open()
          throws Exception

Description copied from class: AbstractStreamOperator

This method is called immediately before any elements are processed, it should contain the operator's initialization logic.

The default implementation does nothing.

Specified by:

open in interface StreamOperator<T>

Overrides:

open in class AbstractStreamOperator<T>

Throws:

Exception - An exception in this method causes the operator to fail.

processElement

public void processElement(StreamRecord<T> record)
                    throws Exception

Description copied from interface: OneInputStreamOperator

Processes one element that arrived at this operator. This method is guaranteed to not be called concurrently with other methods of the operator.

Specified by:

processElement in interface OneInputStreamOperator<T,T>

Throws:

Exception

processWatermark

public void processWatermark(Watermark mark)
                      throws Exception

Description copied from interface: OneInputStreamOperator

Processes a Watermark. This method is guaranteed to not be called concurrently with other methods of the operator.

Specified by:

processWatermark in interface OneInputStreamOperator<T,T>

Throws:

Exception

See Also:

Watermark