public class LocalSlicingWindowAggOperator extends AbstractStreamOperator<RowData> implements OneInputStreamOperator<RowData,RowData>
Note: this only supports event-time window.
| Modifier and Type | Field and Description |
|---|---|
protected TimestampedCollector<RowData> |
collector
This is used for emitting elements with a given timestamp.
|
chainingStrategy, config, lastRecordAttributes1, lastRecordAttributes2, latencyStats, LOG, metrics, output, processingTimeService, stateHandler, stateKeySelector1, stateKeySelector2, timeServiceManager| Constructor and Description |
|---|
LocalSlicingWindowAggOperator(RowDataKeySelector keySelector,
SliceAssigner sliceAssigner,
WindowBuffer.LocalFactory windowBufferFactory,
ZoneId shiftTimezone) |
| 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 |
open()
This method is called immediately before any elements are processed, it should contain the
operator's initialization logic, e.g. state initialization.
|
void |
prepareSnapshotPreBarrier(long checkpointId)
This method is called when the operator should do a snapshot, before it emits its own
checkpoint barrier.
|
void |
processElement(StreamRecord<RowData> element)
Processes one element that arrived on this input of the
MultipleInputStreamOperator. |
void |
processWatermark(Watermark mark)
Processes a
Watermark that arrived on the first input of this two-input operator. |
finish, getChainingStrategy, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getStateKeySelector1, getStateKeySelector2, getTimeServiceManager, getUserCodeClassloader, hasKeyContext1, hasKeyContext2, initializeState, initializeState, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processRecordAttributes, processRecordAttributes1, processRecordAttributes2, processWatermark1, processWatermark2, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, reportOrForwardLatencyMarker, setChainingStrategy, setCurrentKey, setKeyContextElement1, setKeyContextElement2, setMailboxExecutor, setProcessingTimeService, setup, snapshotState, snapshotState, useSplittableTimersclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitsetKeyContextElementfinish, getMetricGroup, getOperatorAttributes, getOperatorID, initializeState, setKeyContextElement1, setKeyContextElement2, snapshotStatenotifyCheckpointAborted, notifyCheckpointCompletegetCurrentKey, setCurrentKeyprocessLatencyMarker, processRecordAttributes, processWatermarkStatushasKeyContextprotected transient TimestampedCollector<RowData> collector
public LocalSlicingWindowAggOperator(RowDataKeySelector keySelector, SliceAssigner sliceAssigner, WindowBuffer.LocalFactory windowBufferFactory, ZoneId shiftTimezone)
public void open()
throws Exception
AbstractStreamOperatorThe 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
InputMultipleInputStreamOperator.
This method is guaranteed to not be called concurrently with other methods of the operator.processElement in interface Input<RowData>Exceptionpublic void processWatermark(Watermark mark) throws Exception
InputWatermark that arrived on the first input of this two-input operator.
This method is guaranteed to not be called concurrently with other methods of the operator.processWatermark in interface Input<RowData>processWatermark in class AbstractStreamOperator<RowData>ExceptionWatermarkpublic void prepareSnapshotPreBarrier(long checkpointId)
throws Exception
StreamOperatorThis method is intended not for any actual state persistence, but only for emitting some data before emitting the checkpoint barrier. Operators that maintain some small transient state that is inefficient to checkpoint (especially when it would need to be checkpointed in a re-scalable way) but can simply be sent downstream before the checkpoint. An example are opportunistic pre-aggregation operators, which have small the pre-aggregation state that is frequently flushed downstream.
Important: This method should not be used for any actual state snapshot logic, because it will inherently be within the synchronous part of the operator's checkpoint. If heavy work is done within this method, it will affect latency and downstream checkpoint alignments.
prepareSnapshotPreBarrier in interface StreamOperator<RowData>prepareSnapshotPreBarrier in class AbstractStreamOperator<RowData>checkpointId - The ID of the checkpoint.Exception - Throwing an exception here causes the operator to fail and go into
recovery.public void close()
throws Exception
StreamOperatorThis 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>ExceptionCopyright © 2014–2024 The Apache Software Foundation. All rights reserved.