Package org.apache.flink.connector.file.table.stream

Class PartitionCommitter

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractStreamOperator<Void>

org.apache.flink.connector.file.table.stream.PartitionCommitter

All Implemented Interfaces:

Serializable, CheckpointListener, Input<PartitionCommitInfo>, KeyContext, KeyContextHandler, OneInputStreamOperator<PartitionCommitInfo,Void>, StreamOperator<Void>, StreamOperatorStateHandler.CheckpointedStreamOperator, YieldingOperator<Void>

@Internal
public class PartitionCommitter
extends AbstractStreamOperator<Void>
implements OneInputStreamOperator<PartitionCommitInfo,Void>

Committer operator for partitions. This is the single (non-parallel) task. It collects all the partition information sent from upstream, and triggers the partition submission decision when it judges to collect the partitions from all tasks of a checkpoint.

NOTE: It processes records after the checkpoint completes successfully. Receive records from upstream CheckpointListener.notifyCheckpointComplete(long).

Processing steps: 1.Partitions are sent from upstream. Add partition to trigger. 2.TaskTracker say it have already received partition data from all tasks in a checkpoint. 3.Extracting committable partitions from PartitionCommitTrigger. 4.Using PartitionCommitPolicy chain to commit partitions.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

config, lastRecordAttributes1, lastRecordAttributes2, latencyStats, LOG, metrics, output, processingTimeService, stateHandler, stateKeySelector1, stateKeySelector2, timeServiceManager

Constructor Summary

Constructors

Constructor	Description
PartitionCommitter(Path locationPath, ObjectIdentifier tableIdentifier, List<String> partitionKeys, TableMetaStoreFactory metaStoreFactory, FileSystemFactory fsFactory, Configuration conf)

Method Summary

Modifier and Type	Method	Description
void	initializeState(StateInitializationContext context)	Stream operators with state which can be restored need to override this hook method.
void	processElement(StreamRecord<PartitionCommitInfo> 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.
void	snapshotState(StateSnapshotContext context)	Stream operators with state, which want to participate in a snapshot need to override this hook method.

Methods inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

close, finish, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getStateKeySelector1, getStateKeySelector2, getTimeServiceManager, getUserCodeClassloader, hasKeyContext1, hasKeyContext2, initializeState, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, open, prepareSnapshotPreBarrier, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processRecordAttributes, processRecordAttributes1, processRecordAttributes2, processWatermark1, processWatermark2, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, reportOrForwardLatencyMarker, setCurrentKey, setKeyContextElement1, setKeyContextElement2, setMailboxExecutor, setProcessingTimeService, setup, snapshotState, useSplittableTimers

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.api.common.state.CheckpointListener

notifyCheckpointAborted, notifyCheckpointComplete

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

processLatencyMarker, processRecordAttributes, processWatermarkStatus

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

getCurrentKey, setCurrentKey

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

hasKeyContext

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

setKeyContextElement

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

close, finish, getMetricGroup, getOperatorAttributes, getOperatorID, initializeState, open, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState

Constructor Detail

PartitionCommitter

public PartitionCommitter(Path locationPath,
                          ObjectIdentifier tableIdentifier,
                          List<String> partitionKeys,
                          TableMetaStoreFactory metaStoreFactory,
                          FileSystemFactory fsFactory,
                          Configuration conf)

Method Detail

initializeState

public void initializeState(StateInitializationContext context)
                     throws Exception

Description copied from class: AbstractStreamOperator

Stream operators with state which can be restored need to override this hook method.

Specified by:

initializeState in interface StreamOperatorStateHandler.CheckpointedStreamOperator

Overrides:

initializeState in class AbstractStreamOperator<Void>

Parameters:

context - context that allows to register different states.

Throws:

Exception

processElement

public void processElement(StreamRecord<PartitionCommitInfo> element)
                    throws Exception

Description copied from interface: Input

Processes one element that arrived on this input of the MultipleInputStreamOperator. This method is guaranteed to not be called concurrently with other methods of the operator.

Specified by:

processElement in interface Input<PartitionCommitInfo>

Throws:

Exception

processWatermark

public void processWatermark(Watermark mark)
                      throws Exception

Description copied from interface: Input

Processes a 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.

Specified by:

processWatermark in interface Input<PartitionCommitInfo>

Overrides:

processWatermark in class AbstractStreamOperator<Void>

Throws:

Exception

See Also:

Watermark

snapshotState

public void snapshotState(StateSnapshotContext context)
                   throws Exception

Description copied from class: AbstractStreamOperator

Stream operators with state, which want to participate in a snapshot need to override this hook method.

Specified by:

snapshotState in interface StreamOperatorStateHandler.CheckpointedStreamOperator

Overrides:

snapshotState in class AbstractStreamOperator<Void>

Parameters:

context - context that provides information and means required for taking a snapshot

Throws:

Exception