public class BatchCompactCoordinator extends AbstractStreamOperator<CompactMessages.CoordinatorOutput> implements OneInputStreamOperator<CompactMessages.CoordinatorInput,CompactMessages.CoordinatorOutput>, BoundedOneInput
BatchFileWriter
and determine whether to compact files or not as well as what files should be
merged into a single file.
NOTE: The coordination is a stable algorithm, which can ensure different attempts will produce same outputs.
chainingStrategy, config, latencyStats, LOG, metrics, output, processingTimeService
Constructor and Description |
---|
BatchCompactCoordinator(SupplierWithException<FileSystem,IOException> fsFactory,
long compactAverageSize,
long compactTargetSize) |
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 |
endInput()
It is notified that no more data will arrive from the input.
|
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<CompactMessages.CoordinatorInput> element)
Processes one element that arrived on this input of the
MultipleInputStreamOperator . |
finish, 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, processWatermark, 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
finish, getMetricGroup, getOperatorID, initializeState, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState
notifyCheckpointAborted, notifyCheckpointComplete
getCurrentKey, setCurrentKey
processLatencyMarker, processWatermark, processWatermarkStatus
hasKeyContext
public BatchCompactCoordinator(SupplierWithException<FileSystem,IOException> fsFactory, long compactAverageSize, long compactTargetSize)
public void open() throws Exception
AbstractStreamOperator
The default implementation does nothing.
open
in interface StreamOperator<CompactMessages.CoordinatorOutput>
open
in class AbstractStreamOperator<CompactMessages.CoordinatorOutput>
Exception
- An exception in this method causes the operator to fail.public void processElement(StreamRecord<CompactMessages.CoordinatorInput> element) throws Exception
Input
MultipleInputStreamOperator
.
This method is guaranteed to not be called concurrently with other methods of the operator.processElement
in interface Input<CompactMessages.CoordinatorInput>
Exception
public void endInput() throws Exception
BoundedOneInput
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: Given it is semantically very similar to the StreamOperator.finish()
method. It might be dropped in favour of the other method at some point in time.
endInput
in interface BoundedOneInput
Exception
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<CompactMessages.CoordinatorOutput>
close
in class AbstractStreamOperator<CompactMessages.CoordinatorOutput>
Exception
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