public class StreamSortOperator extends TableStreamOperator<RowData> implements OneInputStreamOperator<RowData,RowData>
|Constructor and Description|
|Modifier and Type||Method and Description|
This method is called at the end of data processing.
Stream operators with state which can be restored need to override this hook method.
This method is called immediately before any elements are processed, it should contain the operator's initialization logic, e.g.
Processes one element that arrived on this input of the
Stream operators with state, which want to participate in a snapshot need to override this hook method.
close, getChainingStrategy, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getTimeServiceManager, getUserCodeClassloader, initializeState, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, prepareSnapshotPreBarrier, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processWatermark1, processWatermark2, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, registerCounterOnOutput, reportOrForwardLatencyMarker, setChainingStrategy, setCurrentKey, setKeyContextElement1, setKeyContextElement2, setProcessingTimeService, setup, snapshotState
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
close, getMetricGroup, getOperatorID, initializeState, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState
public void open() throws Exception
The default implementation does nothing.
public void processElement(StreamRecord<RowData> element) throws Exception
MultipleInputStreamOperator. This method is guaranteed to not be called concurrently with other methods of the operator.
public void initializeState(StateInitializationContext context) throws Exception
public void snapshotState(StateSnapshotContext context) throws Exception
public void finish() throws Exception
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
NOTE:This method does not need to close any resources. You should release external
resources in the
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