@Internal public class StreamIterationHead<OUT> extends OneInputStreamTask<OUT,OUT>
StreamTask
that is used for executing feedback edges. This is used in
combination with StreamIterationTail
.StreamTask.AsyncCheckpointRunnable
configuration, headOperator, operatorChain, stateBackend, timerService, TRIGGER_THREAD_GROUP
构造器和说明 |
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StreamIterationHead(org.apache.flink.runtime.execution.Environment env) |
限定符和类型 | 方法和说明 |
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protected void |
cancelTask() |
protected void |
cleanup() |
static String |
createBrokerIdString(org.apache.flink.api.common.JobID jid,
String iterationID,
int subtaskIndex)
Creates the identification string with which head and tail task find the shared blocking
queue for the back channel.
|
void |
init() |
protected void |
run() |
abortCheckpointOnBarrier, cancel, createCheckpointExceptionHandlerFactory, createRecordWriters, createStreamTaskStateInitializer, finalize, getAccumulatorMap, getAsyncOperationsThreadPool, getCancelables, getCheckpointLock, getCheckpointStorage, getConfiguration, getName, getProcessingTimeService, getStreamStatusMaintainer, handleAsyncException, invoke, isCanceled, isRunning, notifyCheckpointComplete, toString, triggerCheckpoint, triggerCheckpointOnBarrier
public StreamIterationHead(org.apache.flink.runtime.execution.Environment env)
protected void cancelTask()
cancelTask
在类中 OneInputStreamTask<OUT,OUT>
public void init()
init
在类中 OneInputStreamTask<OUT,OUT>
protected void cleanup() throws Exception
cleanup
在类中 OneInputStreamTask<OUT,OUT>
Exception
public static String createBrokerIdString(org.apache.flink.api.common.JobID jid, String iterationID, int subtaskIndex)
jid
- The job ID.iterationID
- The id of the iteration in the job.subtaskIndex
- The parallel subtask numberCopyright © 2014–2019 The Apache Software Foundation. All rights reserved.