org.apache.flink.connector.file.table.batch.compact

Class BatchCompactOperator<T>

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractStreamOperator<CompactMessages.CompactOutput>

org.apache.flink.connector.file.table.batch.compact.BatchCompactOperator<T>

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.state.CheckpointListener, org.apache.flink.streaming.api.operators.BoundedOneInput, org.apache.flink.streaming.api.operators.Input<CompactMessages.CoordinatorOutput>, org.apache.flink.streaming.api.operators.KeyContext, org.apache.flink.streaming.api.operators.KeyContextHandler, org.apache.flink.streaming.api.operators.OneInputStreamOperator<CompactMessages.CoordinatorOutput,CompactMessages.CompactOutput>, org.apache.flink.streaming.api.operators.SetupableStreamOperator<CompactMessages.CompactOutput>, org.apache.flink.streaming.api.operators.StreamOperator<CompactMessages.CompactOutput>, org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.CheckpointedStreamOperator, org.apache.flink.streaming.api.operators.YieldingOperator<CompactMessages.CompactOutput>

public class BatchCompactOperator<T>
extends org.apache.flink.streaming.api.operators.AbstractStreamOperator<CompactMessages.CompactOutput>
implements org.apache.flink.streaming.api.operators.OneInputStreamOperator<CompactMessages.CoordinatorOutput,CompactMessages.CompactOutput>, org.apache.flink.streaming.api.operators.BoundedOneInput

CompactOperator for compaction in batch mode. It will compact files to a target file and then emit the compacted file's path to downstream operator. The main logic is similar to CompactOperator but skip some unnecessary operations in batch mode.

Note: if the size of the files to be compacted is 1, this operator won't do anything and just emit the file to downstream. Also, the name of the files to be compacted is not a hidden file, it's expected these files are in hidden or temporary directory. Please make sure it. This assumption can help skip rename hidden file.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	ATTEMPT_PREFIX
static String	COMPACTED_PREFIX
static String	UNCOMPACTED_PREFIX

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

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

Constructor Summary

Constructors

Constructor and Description
BatchCompactOperator(org.apache.flink.util.function.SupplierWithException<org.apache.flink.core.fs.FileSystem,IOException> fsFactory, CompactReader.Factory<T> readerFactory, CompactWriter.Factory<T> writerFactory)

Method Summary

Modifier and Type	Method and Description
void	close()
static org.apache.flink.core.fs.Path	convertFromUncompacted(org.apache.flink.core.fs.Path path)
void	endInput()
void	open()
void	processElement(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<CompactMessages.CoordinatorOutput> element)

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

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

setKeyContextElement

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

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

Methods inherited from interface org.apache.flink.api.common.state.CheckpointListener

notifyCheckpointAborted, notifyCheckpointComplete

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

getCurrentKey, setCurrentKey

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

processLatencyMarker, processRecordAttributes, processWatermark, processWatermarkStatus

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

hasKeyContext

Field Detail

UNCOMPACTED_PREFIX

public static final String UNCOMPACTED_PREFIX

See Also:

Constant Field Values

COMPACTED_PREFIX

public static final String COMPACTED_PREFIX

See Also:

Constant Field Values

ATTEMPT_PREFIX

public static final String ATTEMPT_PREFIX

See Also:

Constant Field Values

Constructor Detail

BatchCompactOperator

public BatchCompactOperator(org.apache.flink.util.function.SupplierWithException<org.apache.flink.core.fs.FileSystem,IOException> fsFactory,
                            CompactReader.Factory<T> readerFactory,
                            CompactWriter.Factory<T> writerFactory)

Method Detail

open

public void open()
          throws Exception

Specified by:

open in interface org.apache.flink.streaming.api.operators.StreamOperator<CompactMessages.CompactOutput>

Overrides:

open in class org.apache.flink.streaming.api.operators.AbstractStreamOperator<CompactMessages.CompactOutput>

Throws:

Exception

processElement

public void processElement(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<CompactMessages.CoordinatorOutput> element)
                    throws Exception

Specified by:

processElement in interface org.apache.flink.streaming.api.operators.Input<CompactMessages.CoordinatorOutput>

Throws:

Exception

endInput

public void endInput()
              throws Exception

Specified by:

endInput in interface org.apache.flink.streaming.api.operators.BoundedOneInput

Throws:

Exception

close

public void close()
           throws Exception

Specified by:

close in interface org.apache.flink.streaming.api.operators.StreamOperator<CompactMessages.CompactOutput>

Overrides:

close in class org.apache.flink.streaming.api.operators.AbstractStreamOperator<CompactMessages.CompactOutput>

Throws:

Exception

convertFromUncompacted

public static org.apache.flink.core.fs.Path convertFromUncompacted(org.apache.flink.core.fs.Path path)