AbstractStreamOperator (Flink : 1.20-SNAPSHOT API)

java.lang.Object
- org.apache.flink.streaming.api.operators.AbstractStreamOperator<OUT>

Type Parameters:

OUT - The output type of the operator.

All Implemented Interfaces:

Serializable, CheckpointListener, KeyContext, KeyContextHandler, SetupableStreamOperator<OUT>, StreamOperator<OUT>, StreamOperatorStateHandler.CheckpointedStreamOperator, YieldingOperator<OUT>

Direct Known Subclasses:

AbstractAsyncStateStreamOperator, AbstractMapBundleOperator, AbstractPythonFunctionOperator, AbstractStreamingJoinOperator, AbstractStreamingWriter, AbstractUdfStreamOperator, BaseTwoInputStreamOperatorWithStateRetention, BatchCompactCoordinator, BatchCompactOperator, BatchFileWriter, BootstrapStreamTaskRunner, CacheTransformationTranslator.IdentityStreamOperator, CacheTransformationTranslator.NoOpStreamOperator, CompactCoordinator, CompactCoordinator, CompactCoordinatorStateHandler, CompactOperator, CompactorOperator, CompactorOperatorStateHandler, ContinuousFileReaderOperator, DynamicFilteringDataCollectorOperator, GenericWriteAheadSink, KeyedSortPartitionOperator, LocalSlicingWindowAggOperator, PartitionCommitter, ProcTimeMiniBatchAssignerOperator, ProcTimeSortOperator, QueryableAppendingStateOperator, QueryableValueStateOperator, RowTimeMiniBatchAssginerOperator, RowTimeSortOperator, SortPartitionOperator, SourceOperator, StreamProject, TableStreamOperator, TimestampsAndWatermarksOperator, WatermarkAssignerOperator, WindowOperator
```
@PublicEvolving
public abstract class AbstractStreamOperator<OUT>
extends Object
implements StreamOperator<OUT>, SetupableStreamOperator<OUT>, YieldingOperator<OUT>, StreamOperatorStateHandler.CheckpointedStreamOperator, KeyContextHandler, Serializable
```
Base class for all stream operators. Operators that contain a user function should extend the class AbstractUdfStreamOperator instead (which is a specialized subclass of this class).
For concrete implementations, one of the following two interfaces must also be implemented, to mark the operator as unary or binary: OneInputStreamOperator or TwoInputStreamOperator.
Methods of StreamOperator are guaranteed not to be called concurrently. Also, if using the timer service, timer callbacks are also guaranteed not to be called concurrently with methods on StreamOperator.
Note, this class is going to be removed and replaced in the future by AbstractStreamOperatorV2. However as AbstractStreamOperatorV2 is currently experimental, AbstractStreamOperator has not been deprecated just yet.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected ChainingStrategy`	`chainingStrategy`
`protected StreamConfig`	`config`
`protected RecordAttributes`	`lastRecordAttributes1`
`protected RecordAttributes`	`lastRecordAttributes2`
`protected LatencyStats`	`latencyStats`
`protected static org.slf4j.Logger`	`LOG` The logger used by the operator class and its subclasses.
`protected InternalOperatorMetricGroup`	`metrics` Metric group for the operator.
`protected Output<StreamRecord<OUT>>`	`output`
`protected ProcessingTimeService`	`processingTimeService`
`protected StreamOperatorStateHandler`	`stateHandler`
`protected KeySelector<?,?>`	`stateKeySelector1` `KeySelector` for extracting a key from an element being processed.
`protected KeySelector<?,?>`	`stateKeySelector2` `KeySelector` for extracting a key from an element being processed.
`protected InternalTimeServiceManager<?>`	`timeServiceManager`

Constructor Summary

Constructors
Constructor and Description

AbstractStreamOperator()

Constructors
Constructor and Description
`AbstractStreamOperator()`

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
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.
`ChainingStrategy`	`getChainingStrategy()`
`StreamTask<?,?>`	`getContainingTask()`
`Object`	`getCurrentKey()`
`ExecutionConfig`	`getExecutionConfig()` Gets the execution config defined on the execution environment of the job to which this operator belongs.
`<K,N> InternalTimerService<N>`	`getInternalTimerService(String name, TypeSerializer<N> namespaceSerializer, Triggerable<K,N> triggerable)` Returns a `InternalTimerService` that can be used to query current processing time and event time and to set timers.
`<K> KeyedStateBackend<K>`	`getKeyedStateBackend()`
`KeyedStateStore`	`getKeyedStateStore()`
`OperatorMetricGroup`	`getMetricGroup()`
`StreamConfig`	`getOperatorConfig()`
`OperatorID`	`getOperatorID()`
`protected String`	`getOperatorName()` Return the operator name.
`OperatorStateBackend`	`getOperatorStateBackend()`
`protected <N,S extends State,T> S`	`getOrCreateKeyedState(TypeSerializer<N> namespaceSerializer, StateDescriptor<S,T> stateDescriptor)`
`protected <S extends State,N> S`	`getPartitionedState(N namespace, TypeSerializer<N> namespaceSerializer, StateDescriptor<S,?> stateDescriptor)` Creates a partitioned state handle, using the state backend configured for this task.
`protected <S extends State> S`	`getPartitionedState(StateDescriptor<S,?> stateDescriptor)` Creates a partitioned state handle, using the state backend configured for this task.
`ProcessingTimeService`	`getProcessingTimeService()` Returns the `ProcessingTimeService` responsible for getting the current processing time and registering timers.
`StreamingRuntimeContext`	`getRuntimeContext()` Returns a context that allows the operator to query information about the execution and also to interact with systems such as broadcast variables and managed state.
`protected KeySelector<?,?>`	`getStateKeySelector1()`
`protected KeySelector<?,?>`	`getStateKeySelector2()`
`protected Optional<InternalTimeServiceManager<?>>`	`getTimeServiceManager()`
`ClassLoader`	`getUserCodeClassloader()`
`boolean`	`hasKeyContext1()` Whether the first input of `StreamOperator` has "KeyContext".
`boolean`	`hasKeyContext2()` Whether the second input of `StreamOperator` has "KeyContext".
`void`	`initializeState(StateInitializationContext context)` Stream operators with state which can be restored need to override this hook method.
`void`	`initializeState(StreamTaskStateInitializer streamTaskStateManager)` Provides a context to initialize all state in the operator.
`protected boolean`	`isUsingCustomRawKeyedState()` Indicates whether or not implementations of this class is writing to the raw keyed state streams on snapshots, using `snapshotState(StateSnapshotContext)`.
`void`	`notifyCheckpointAborted(long checkpointId)` This method is called as a notification once a distributed checkpoint has been aborted.
`void`	`notifyCheckpointComplete(long checkpointId)` Notifies the listener that the checkpoint with the given `checkpointId` completed and was committed.
`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`	`processLatencyMarker(LatencyMarker latencyMarker)`
`void`	`processLatencyMarker1(LatencyMarker latencyMarker)`
`void`	`processLatencyMarker2(LatencyMarker latencyMarker)`
`void`	`processRecordAttributes(RecordAttributes recordAttributes)`
`void`	`processRecordAttributes1(RecordAttributes recordAttributes)`
`void`	`processRecordAttributes2(RecordAttributes recordAttributes)`
`void`	`processWatermark(Watermark mark)`
`void`	`processWatermark1(Watermark mark)`
`void`	`processWatermark2(Watermark mark)`
`void`	`processWatermarkStatus(WatermarkStatus watermarkStatus)`
`void`	`processWatermarkStatus1(WatermarkStatus watermarkStatus)`
`void`	`processWatermarkStatus2(WatermarkStatus watermarkStatus)`
`protected void`	`reportOrForwardLatencyMarker(LatencyMarker marker)`
`void`	`setChainingStrategy(ChainingStrategy strategy)`
`void`	`setCurrentKey(Object key)`
`void`	`setKeyContextElement1(StreamRecord record)`
`void`	`setKeyContextElement2(StreamRecord record)`
`void`	`setMailboxExecutor(MailboxExecutor mailboxExecutor)`
`void`	`setProcessingTimeService(ProcessingTimeService processingTimeService)` Deprecated. The `ProcessingTimeService` instance should be passed by the operator constructor and this method will be removed along with `SetupableStreamOperator`.
`void`	`setup(StreamTask<?,?> containingTask, StreamConfig config, Output<StreamRecord<OUT>> output)` Initializes the operator.
`OperatorSnapshotFutures`	`snapshotState(long checkpointId, long timestamp, CheckpointOptions checkpointOptions, CheckpointStreamFactory factory)` Called to draw a state snapshot from the operator.
`void`	`snapshotState(StateSnapshotContext context)` Stream operators with state, which want to participate in a snapshot need to override this hook method.
`boolean`	`useSplittableTimers()` Can be overridden to disable splittable timers for this particular operator even if config option is enabled.

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
getOperatorAttributes

Methods inherited from interface org.apache.flink.streaming.api.operators.KeyContextHandler
hasKeyContext

- Field Detail
  - LOG
```
protected static final org.slf4j.Logger LOG
```
    The logger used by the operator class and its subclasses.
  - chainingStrategy
```
protected ChainingStrategy chainingStrategy
```
  - config
```
protected transient StreamConfig config
```
  - output
```
protected transient Output<StreamRecord<OUT>> output
```
  - stateKeySelector1
```
protected transient KeySelector<?,?> stateKeySelector1
```
    KeySelector for extracting a key from an element being processed. This is used to scope keyed state to a key. This is null if the operator is not a keyed operator.
    This is for elements from the first input.
  - stateKeySelector2
```
protected transient KeySelector<?,?> stateKeySelector2
```
    KeySelector for extracting a key from an element being processed. This is used to scope keyed state to a key. This is null if the operator is not a keyed operator.
    This is for elements from the second input.
  - stateHandler
```
protected transient StreamOperatorStateHandler stateHandler
```
  - timeServiceManager
```
protected transient InternalTimeServiceManager<?> timeServiceManager
```
  - metrics
```
protected transient InternalOperatorMetricGroup metrics
```
    Metric group for the operator.
  - latencyStats
```
protected transient LatencyStats latencyStats
```
  - processingTimeService
```
protected transient ProcessingTimeService processingTimeService
```
  - lastRecordAttributes1
```
protected transient RecordAttributes lastRecordAttributes1
```
  - lastRecordAttributes2
```
protected transient RecordAttributes lastRecordAttributes2
```
- Constructor Detail
  - AbstractStreamOperator
```
public AbstractStreamOperator()
```
- Method Detail
  - setup
```
public void setup(StreamTask<?,?> containingTask,
                  StreamConfig config,
                  Output<StreamRecord<OUT>> output)
```
    Description copied from interface: SetupableStreamOperator
    
    Initializes the operator. Sets access to the context and the output.
    
    Specified by:
    
    setup in interface SetupableStreamOperator<OUT>
  - setProcessingTimeService
```
@Deprecated
public void setProcessingTimeService(ProcessingTimeService processingTimeService)
```
    Deprecated. The ProcessingTimeService instance should be passed by the operator constructor and this method will be removed along with SetupableStreamOperator.
  - getMetricGroup
```
public OperatorMetricGroup getMetricGroup()
```
    Specified by:
    
    getMetricGroup in interface StreamOperator<OUT>
  - initializeState
```
public void initializeState(StreamTaskStateInitializer streamTaskStateManager)
                     throws Exception
```
    Description copied from interface: StreamOperator
    
    Provides a context to initialize all state in the operator.
    
    Specified by:
    
    initializeState in interface StreamOperator<OUT>
    
    Throws:
    
    Exception
  - isUsingCustomRawKeyedState
```
@Internal
protected boolean isUsingCustomRawKeyedState()
```
    Indicates whether or not implementations of this class is writing to the raw keyed state streams on snapshots, using snapshotState(StateSnapshotContext). If yes, subclasses should override this method to return true.
    Subclasses need to explicitly indicate the use of raw keyed state because, internally, the AbstractStreamOperator may attempt to read from it as well to restore heap-based timers and ultimately fail with read errors. By setting this flag to true, this allows the AbstractStreamOperator to know that the data written in the raw keyed states were not written by the timer services, and skips the timer restore attempt.
    Please refer to FLINK-19741 for further details.
    TODO: this method can be removed once all timers are moved to be managed by state backends.
    
    Returns:
    
    flag indicating whether or not this operator is writing to raw keyed state via snapshotState(StateSnapshotContext).
  - setMailboxExecutor
```
@Internal
public void setMailboxExecutor(MailboxExecutor mailboxExecutor)
```
    Specified by:
    
    setMailboxExecutor in interface YieldingOperator<OUT>
  - useSplittableTimers
```
@Internal
public boolean useSplittableTimers()
```
    Can be overridden to disable splittable timers for this particular operator even if config option is enabled. By default, splittable timers are disabled.
    
    Returns:
    
    true if splittable timers should be used (subject to StreamConfig.isUnalignedCheckpointsEnabled() and StreamConfig.isUnalignedCheckpointsSplittableTimersEnabled(). false if splittable timers should never be used.
  - open
```
public void open()
          throws Exception
```
    This method is called immediately before any elements are processed, it should contain the operator's initialization logic, e.g. state initialization.
    The default implementation does nothing.
    
    Specified by:
    
    open in interface StreamOperator<OUT>
    
    Throws:
    
    Exception - An exception in this method causes the operator to fail.
  - finish
```
public void finish()
            throws Exception
```
    Description copied from interface: StreamOperator
    
    This method is called at the end of data processing.
    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.
    
    Specified by:
    
    finish in interface StreamOperator<OUT>
    
    Throws:
    
    Exception - An exception in this method causes the operator to fail.
  - close
```
public void close()
           throws Exception
```
    Description copied from interface: StreamOperator
    
    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.
    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.
    
    Specified by:
    
    close in interface StreamOperator<OUT>
    
    Throws:
    
    Exception
  - prepareSnapshotPreBarrier
```
public void prepareSnapshotPreBarrier(long checkpointId)
                               throws Exception
```
    Description copied from interface: StreamOperator
    
    This method is called when the operator should do a snapshot, before it emits its own checkpoint barrier.
    This 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.
    
    Specified by:
    
    prepareSnapshotPreBarrier in interface StreamOperator<OUT>
    
    Parameters:
    
    checkpointId - The ID of the checkpoint.
    
    Throws:
    
    Exception - Throwing an exception here causes the operator to fail and go into recovery.
  - snapshotState
```
public OperatorSnapshotFutures snapshotState(long checkpointId,
                                             long timestamp,
                                             CheckpointOptions checkpointOptions,
                                             CheckpointStreamFactory factory)
                                      throws Exception
```
    Description copied from interface: StreamOperator
    
    Called to draw a state snapshot from the operator.
    
    Specified by:
    
    snapshotState in interface StreamOperator<OUT>
    
    Returns:
    
    a runnable future to the state handle that points to the snapshotted state. For synchronous implementations, the runnable might already be finished.
    
    Throws:
    
    Exception - exception that happened during snapshotting.
  - snapshotState
```
public void snapshotState(StateSnapshotContext context)
                   throws Exception
```
    Stream operators with state, which want to participate in a snapshot need to override this hook method.
    
    Specified by:
    
    snapshotState in interface StreamOperatorStateHandler.CheckpointedStreamOperator
    
    Parameters:
    
    context - context that provides information and means required for taking a snapshot
    
    Throws:
    
    Exception
  - initializeState
```
public void initializeState(StateInitializationContext context)
                     throws Exception
```
    Stream operators with state which can be restored need to override this hook method.
    
    Specified by:
    
    initializeState in interface StreamOperatorStateHandler.CheckpointedStreamOperator
    
    Parameters:
    
    context - context that allows to register different states.
    
    Throws:
    
    Exception
  - notifyCheckpointComplete
```
public void notifyCheckpointComplete(long checkpointId)
                              throws Exception
```
    Description copied from interface: CheckpointListener
    
    Notifies the listener that the checkpoint with the given checkpointId completed and was committed.
    These notifications are "best effort", meaning they can sometimes be skipped. To behave properly, implementers need to follow the "Checkpoint Subsuming Contract". Please see the class-level JavaDocs for details.
    Please note that checkpoints may generally overlap, so you cannot assume that the notifyCheckpointComplete() call is always for the latest prior checkpoint (or snapshot) that was taken on the function/operator implementing this interface. It might be for a checkpoint that was triggered earlier. Implementing the "Checkpoint Subsuming Contract" (see above) properly handles this situation correctly as well.
    Please note that throwing exceptions from this method will not cause the completed checkpoint to be revoked. Throwing exceptions will typically cause task/job failure and trigger recovery.
    
    Specified by:
    
    notifyCheckpointComplete in interface CheckpointListener
    
    Parameters:
    
    checkpointId - The ID of the checkpoint that has been completed.
    
    Throws:
    
    Exception - This method can propagate exceptions, which leads to a failure/recovery for the task. Note that this will NOT lead to the checkpoint being revoked.
  - notifyCheckpointAborted
```
public void notifyCheckpointAborted(long checkpointId)
                             throws Exception
```
    Description copied from interface: CheckpointListener
    
    This method is called as a notification once a distributed checkpoint has been aborted.
    Important: The fact that a checkpoint has been aborted does NOT mean that the data and artifacts produced between the previous checkpoint and the aborted checkpoint are to be discarded. The expected behavior is as if this checkpoint was never triggered in the first place, and the next successful checkpoint simply covers a longer time span. See the "Checkpoint Subsuming Contract" in the class-level JavaDocs for details.
    These notifications are "best effort", meaning they can sometimes be skipped.
    This method is very rarely necessary to implement. The "best effort" guarantee, together with the fact that this method should not result in discarding any data (per the "Checkpoint Subsuming Contract") means it is mainly useful for earlier cleanups of auxiliary resources. One example is to pro-actively clear a local per-checkpoint state cache upon checkpoint failure.
    
    Specified by:
    
    notifyCheckpointAborted in interface CheckpointListener
    
    Parameters:
    
    checkpointId - The ID of the checkpoint that has been aborted.
    
    Throws:
    
    Exception - This method can propagate exceptions, which leads to a failure/recovery for the task or job.
  - getExecutionConfig
```
public ExecutionConfig getExecutionConfig()
```
    Gets the execution config defined on the execution environment of the job to which this operator belongs.
    
    Returns:
    
    The job's execution config.
  - getOperatorConfig
```
public StreamConfig getOperatorConfig()
```
  - getContainingTask
```
public StreamTask<?,?> getContainingTask()
```
  - getUserCodeClassloader
```
public ClassLoader getUserCodeClassloader()
```
  - getOperatorName
```
protected String getOperatorName()
```
    Return the operator name. If the runtime context has been set, then the task name with subtask index is returned. Otherwise, the simple class name is returned.
    
    Returns:
    
    If runtime context is set, then return task name with subtask index. Otherwise return simple class name.
  - getRuntimeContext
```
@VisibleForTesting
public StreamingRuntimeContext getRuntimeContext()
```
    Returns a context that allows the operator to query information about the execution and also to interact with systems such as broadcast variables and managed state. This also allows to register timers.
  - getKeyedStateBackend
```
public <K> KeyedStateBackend<K> getKeyedStateBackend()
```
  - getOperatorStateBackend
```
@VisibleForTesting
public OperatorStateBackend getOperatorStateBackend()
```
  - getProcessingTimeService
```
@VisibleForTesting
public ProcessingTimeService getProcessingTimeService()
```
    Returns the ProcessingTimeService responsible for getting the current processing time and registering timers.
  - getPartitionedState
```
protected <S extends State> S getPartitionedState(StateDescriptor<S,?> stateDescriptor)
                                           throws Exception
```
    Creates a partitioned state handle, using the state backend configured for this task.
    
    Throws:
    
    IllegalStateException - Thrown, if the key/value state was already initialized.
    
    Exception - Thrown, if the state backend cannot create the key/value state.
  - getOrCreateKeyedState
```
protected <N,S extends State,T> S getOrCreateKeyedState(TypeSerializer<N> namespaceSerializer,
                                                        StateDescriptor<S,T> stateDescriptor)
                                                 throws Exception
```
    Throws:
    
    Exception
  - getPartitionedState
```
protected <S extends State,N> S getPartitionedState(N namespace,
                                                    TypeSerializer<N> namespaceSerializer,
                                                    StateDescriptor<S,?> stateDescriptor)
                                             throws Exception
```
    Creates a partitioned state handle, using the state backend configured for this task.
    
    Throws:
    
    IllegalStateException - Thrown, if the key/value state was already initialized.
    
    Exception - Thrown, if the state backend cannot create the key/value state.
  - setKeyContextElement1
```
public void setKeyContextElement1(StreamRecord record)
                           throws Exception
```
    Specified by:
    
    setKeyContextElement1 in interface StreamOperator<OUT>
    
    Throws:
    
    Exception
  - setKeyContextElement2
```
public void setKeyContextElement2(StreamRecord record)
                           throws Exception
```
    Specified by:
    
    setKeyContextElement2 in interface StreamOperator<OUT>
    
    Throws:
    
    Exception
  - hasKeyContext1
```
@Internal
public boolean hasKeyContext1()
```
    Description copied from interface: KeyContextHandler
    
    Whether the first input of StreamOperator has "KeyContext". If false, we can omit the call of StreamOperator.setKeyContextElement1(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<?>) for each record arrived on the first input.
    
    Specified by:
    
    hasKeyContext1 in interface KeyContextHandler
    
    Returns:
    
    True if the first input has "KeyContext", false otherwise.
  - hasKeyContext2
```
@Internal
public boolean hasKeyContext2()
```
    Description copied from interface: KeyContextHandler
    
    Whether the second input of StreamOperator has "KeyContext". If false, we can omit the call of StreamOperator.setKeyContextElement1(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<?>) for each record arrived on the second input.
    
    Specified by:
    
    hasKeyContext2 in interface KeyContextHandler
    
    Returns:
    
    True if the second input has "KeyContext", false otherwise.
  - setCurrentKey
```
public void setCurrentKey(Object key)
```
    Specified by:
    
    setCurrentKey in interface KeyContext
  - getCurrentKey
```
public Object getCurrentKey()
```
    Specified by:
    
    getCurrentKey in interface KeyContext
  - getKeyedStateStore
```
public KeyedStateStore getKeyedStateStore()
```
  - getStateKeySelector1
```
protected KeySelector<?,?> getStateKeySelector1()
```
  - getStateKeySelector2
```
protected KeySelector<?,?> getStateKeySelector2()
```
  - setChainingStrategy
```
public final void setChainingStrategy(ChainingStrategy strategy)
```
    Specified by:
    
    setChainingStrategy in interface SetupableStreamOperator<OUT>
  - getChainingStrategy
```
public final ChainingStrategy getChainingStrategy()
```
    Specified by:
    
    getChainingStrategy in interface SetupableStreamOperator<OUT>
  - processLatencyMarker
```
public void processLatencyMarker(LatencyMarker latencyMarker)
                          throws Exception
```
    Throws:
    
    Exception
  - processLatencyMarker1
```
public void processLatencyMarker1(LatencyMarker latencyMarker)
                           throws Exception
```
    Throws:
    
    Exception
  - processLatencyMarker2
```
public void processLatencyMarker2(LatencyMarker latencyMarker)
                           throws Exception
```
    Throws:
    
    Exception
  - reportOrForwardLatencyMarker
```
protected void reportOrForwardLatencyMarker(LatencyMarker marker)
```
  - getInternalTimerService
```
public <K,N> InternalTimerService<N> getInternalTimerService(String name,
                                                             TypeSerializer<N> namespaceSerializer,
                                                             Triggerable<K,N> triggerable)
```
    Returns a InternalTimerService that can be used to query current processing time and event time and to set timers. An operator can have several timer services, where each has its own namespace serializer. Timer services are differentiated by the string key that is given when requesting them, if you call this method with the same key multiple times you will get the same timer service instance in subsequent requests.
    Timers are always scoped to a key, the currently active key of a keyed stream operation. When a timer fires, this key will also be set as the currently active key.
    Each timer has attached metadata, the namespace. Different timer services can have a different namespace type. If you don't need namespace differentiation you can use VoidNamespaceSerializer as the namespace serializer.
    
    Type Parameters:
    
    N - The type of the timer namespace.
    
    Parameters:
    
    name - The name of the requested timer service. If no service exists under the given name a new one will be created and returned.
    
    namespaceSerializer - TypeSerializer for the timer namespace.
    
    triggerable - The Triggerable that should be invoked when timers fire
  - processWatermark
```
public void processWatermark(Watermark mark)
                      throws Exception
```
    Throws:
    
    Exception
  - processWatermark1
```
public void processWatermark1(Watermark mark)
                       throws Exception
```
    Throws:
    
    Exception
  - processWatermark2
```
public void processWatermark2(Watermark mark)
                       throws Exception
```
    Throws:
    
    Exception
  - processWatermarkStatus
```
public void processWatermarkStatus(WatermarkStatus watermarkStatus)
                            throws Exception
```
    Throws:
    
    Exception
  - processWatermarkStatus1
```
public final void processWatermarkStatus1(WatermarkStatus watermarkStatus)
                                   throws Exception
```
    Throws:
    
    Exception
  - processWatermarkStatus2
```
public final void processWatermarkStatus2(WatermarkStatus watermarkStatus)
                                   throws Exception
```
    Throws:
    
    Exception
  - getOperatorID
```
public OperatorID getOperatorID()
```
    Specified by:
    
    getOperatorID in interface StreamOperator<OUT>
  - getTimeServiceManager
```
protected Optional<InternalTimeServiceManager<?>> getTimeServiceManager()
```
  - processRecordAttributes
```
@Experimental
public void processRecordAttributes(RecordAttributes recordAttributes)
                                           throws Exception
```
    Throws:
    
    Exception
  - processRecordAttributes1
```
@Experimental
public void processRecordAttributes1(RecordAttributes recordAttributes)
```
  - processRecordAttributes2
```
@Experimental
public void processRecordAttributes2(RecordAttributes recordAttributes)
```

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Class AbstractStreamOperator<OUT>

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

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

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

Field Detail

LOG

chainingStrategy

config

output

stateKeySelector1

stateKeySelector2

stateHandler

timeServiceManager

metrics

latencyStats

processingTimeService

lastRecordAttributes1

lastRecordAttributes2

Constructor Detail

AbstractStreamOperator

Method Detail

setup

setProcessingTimeService

getMetricGroup

initializeState

isUsingCustomRawKeyedState

setMailboxExecutor

useSplittableTimers

open

finish

close

prepareSnapshotPreBarrier

snapshotState

snapshotState

initializeState

notifyCheckpointComplete

notifyCheckpointAborted

getExecutionConfig

getOperatorConfig

getContainingTask

getUserCodeClassloader

getOperatorName

getRuntimeContext

getKeyedStateBackend

getOperatorStateBackend

getProcessingTimeService

getPartitionedState

getOrCreateKeyedState

getPartitionedState

setKeyContextElement1

setKeyContextElement2

hasKeyContext1

hasKeyContext2

setCurrentKey

getCurrentKey

getKeyedStateStore

getStateKeySelector1

getStateKeySelector2

setChainingStrategy

getChainingStrategy

processLatencyMarker

processLatencyMarker1

processLatencyMarker2

reportOrForwardLatencyMarker

getInternalTimerService

processWatermark

processWatermark1

processWatermark2

processWatermarkStatus

processWatermarkStatus1

processWatermarkStatus2

getOperatorID

getTimeServiceManager

processRecordAttributes

processRecordAttributes1

processRecordAttributes2