public class WatermarkAssignerOperator extends AbstractStreamOperator<RowData> implements OneInputStreamOperator<RowData,RowData>, ProcessingTimeService.ProcessingTimeCallback
chainingStrategy, config, latencyStats, LOG, metrics, output, processingTimeService
Constructor and Description |
---|
WatermarkAssignerOperator(int rowtimeFieldIndex,
WatermarkGenerator watermarkGenerator,
long idleTimeout,
ProcessingTimeService processingTimeService)
Create a watermark assigner operator.
|
Modifier and Type | Method and Description |
---|---|
void |
close()
This method is called at the very end of the operator's life, both in the case of a
successful completion of the operation, and in the case of a failure and canceling.
|
void |
finish()
This method is called at the end of data processing.
|
void |
onProcessingTime(long timestamp)
This method is invoked with the time which the callback register for.
|
void |
open()
This method is called immediately before any elements are processed, it should contain the
operator's initialization logic, e.g.
|
void |
processElement(StreamRecord<RowData> element)
Processes one element that arrived on this input of the
MultipleInputStreamOperator . |
void |
processWatermark(Watermark mark)
Override the base implementation to completely ignore watermarks propagated from upstream (we
rely only on the
WatermarkGenerator to emit watermarks from here). |
void |
processWatermarkStatus(WatermarkStatus watermarkStatus)
Processes a
WatermarkStatus that arrived on this input of the MultipleInputStreamOperator . |
getChainingStrategy, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getTimeServiceManager, getUserCodeClassloader, hasKeyContext1, hasKeyContext2, initializeState, initializeState, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, prepareSnapshotPreBarrier, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processWatermark1, processWatermark2, processWatermarkStatus1, processWatermarkStatus2, reportOrForwardLatencyMarker, setChainingStrategy, setCurrentKey, setKeyContextElement1, setKeyContextElement2, setProcessingTimeService, setup, snapshotState, snapshotState
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
setKeyContextElement
getMetricGroup, getOperatorID, initializeState, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState
notifyCheckpointAborted, notifyCheckpointComplete
getCurrentKey, setCurrentKey
processLatencyMarker
hasKeyContext
public WatermarkAssignerOperator(int rowtimeFieldIndex, WatermarkGenerator watermarkGenerator, long idleTimeout, ProcessingTimeService processingTimeService)
rowtimeFieldIndex
- the field index to extract event timestampwatermarkGenerator
- the watermark generatoridleTimeout
- (idleness checking timeout)public void open() throws Exception
AbstractStreamOperator
The default implementation does nothing.
open
in interface StreamOperator<RowData>
open
in class AbstractStreamOperator<RowData>
Exception
- An exception in this method causes the operator to fail.public void processElement(StreamRecord<RowData> element) throws Exception
Input
MultipleInputStreamOperator
.
This method is guaranteed to not be called concurrently with other methods of the operator.processElement
in interface Input<RowData>
Exception
public void onProcessingTime(long timestamp) throws Exception
ProcessingTimeService.ProcessingTimeCallback
onProcessingTime
in interface ProcessingTimeService.ProcessingTimeCallback
timestamp
- The time this callback was registered for.Exception
public void processWatermark(Watermark mark) throws Exception
WatermarkGenerator
to emit watermarks from here).processWatermark
in interface Input<RowData>
processWatermark
in class AbstractStreamOperator<RowData>
Exception
Watermark
public void processWatermarkStatus(WatermarkStatus watermarkStatus) throws Exception
Input
WatermarkStatus
that arrived on this input of the MultipleInputStreamOperator
. This method is guaranteed to not be called concurrently with
other methods of the operator.processWatermarkStatus
in interface Input<RowData>
processWatermarkStatus
in class AbstractStreamOperator<RowData>
Exception
WatermarkStatus
public void finish() throws Exception
StreamOperator
The method is expected to flush all remaining buffered data. Exceptions during this flushing of buffered data should be propagated, in order to cause the operation to be recognized as failed, because the last data items are not processed properly.
After this method is called, no more records can be produced for the downstream operators.
WARNING: It is not safe to use this method to commit any transactions or other side
effects! You can use this method to flush any buffered data that can later on be committed
e.g. in a CheckpointListener.notifyCheckpointComplete(long)
.
NOTE:This method does not need to close any resources. You should release external
resources in the StreamOperator.close()
method.
finish
in interface StreamOperator<RowData>
finish
in class AbstractStreamOperator<RowData>
Exception
- An exception in this method causes the operator to fail.public void close() throws Exception
StreamOperator
This method is expected to make a thorough effort to release all resources that the operator has acquired.
NOTE:It can not emit any records! If you need to emit records at the end of
processing, do so in the StreamOperator.finish()
method.
close
in interface StreamOperator<RowData>
close
in class AbstractStreamOperator<RowData>
Exception
Copyright © 2014–2024 The Apache Software Foundation. All rights reserved.