public class RowTimeMiniBatchAssginerOperator extends AbstractStreamOperator<RowData> implements OneInputStreamOperator<RowData,RowData>
For example, if this operator receives watermarks 0,1,2,3 ..., 19, 20, 21
. The
downstream operator is a 5-size window aggregate, then the mini-batch interval is 5 (this is
inferred by rules). Then only 4, 9, 14, 19
will be forwarded, because they are the
watermarks trigger windows.
The difference between this operator and ProcTimeMiniBatchAssignerOperator
is that,
this operator forwards watermarks from upstream, but the other generates watermarks by itself
using processing time.
chainingStrategy, config, latencyStats, LOG, metrics, output, processingTimeService
Constructor and Description |
---|
RowTimeMiniBatchAssginerOperator(long minibatchInterval) |
Modifier and Type | Method and Description |
---|---|
void |
finish()
This method is called at the end of data processing.
|
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 |
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. |
close, 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, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, reportOrForwardLatencyMarker, setChainingStrategy, setCurrentKey, setKeyContextElement1, setKeyContextElement2, setProcessingTimeService, setup, snapshotState, snapshotState
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
setKeyContextElement
close, getMetricGroup, getOperatorID, initializeState, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState
notifyCheckpointAborted, notifyCheckpointComplete
getCurrentKey, setCurrentKey
processLatencyMarker, processWatermarkStatus
hasKeyContext
public RowTimeMiniBatchAssginerOperator(long minibatchInterval)
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 processWatermark(Watermark mark) throws Exception
Input
Watermark
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>
Exception
Watermark
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.Copyright © 2014–2024 The Apache Software Foundation. All rights reserved.