org.apache.flink.runtime.operators

类 DataSinkTask<IT>

java.lang.Object

org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable

org.apache.flink.runtime.operators.DataSinkTask<IT>

所有已实现的接口:

CheckpointableTask, CoordinatedTask, TaskInvokable

public class DataSinkTask<IT>
extends AbstractInvokable

DataSinkTask which is executed by a task manager. The task hands the data to an output format.

另请参阅:

OutputFormat

构造器概要

构造器

构造器和说明
DataSinkTask(Environment environment) Create an Invokable task and set its environment.

方法概要

限定符和类型	方法和说明
Future<Void>	cancel() This method is called when a task is canceled either as a result of a user abort or an execution failure.
DistributedRuntimeUDFContext	createRuntimeContext()
void	invoke() Starts the execution.

从类继承的方法 org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable

abortCheckpointOnBarrier, cleanUp, dispatchOperatorEvent, getCurrentNumberOfSubtasks, getEnvironment, getExecutionConfig, getIndexInSubtaskGroup, getJobConfiguration, getTaskConfiguration, getUserCodeClassLoader, isUsingNonBlockingInput, maybeInterruptOnCancel, notifyCheckpointAbortAsync, notifyCheckpointCompleteAsync, restore, triggerCheckpointAsync, triggerCheckpointOnBarrier

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

DataSinkTask

public DataSinkTask(Environment environment)

Create an Invokable task and set its environment.

参数:

environment - The environment assigned to this invokable.

方法详细资料

invoke

public void invoke()
            throws Exception

从接口复制的说明: TaskInvokable

Starts the execution.

This method is called by the task manager when the actual execution of the task starts.

All resources should be cleaned up by calling TaskInvokable.cleanUp(Throwable) ()} after the method returns.

指定者:

invoke 在接口中 TaskInvokable

指定者:

invoke 在类中 AbstractInvokable

抛出:

Exception

cancel

public Future<Void> cancel()
                    throws Exception

从接口复制的说明: TaskInvokable

This method is called when a task is canceled either as a result of a user abort or an execution failure. It can be overwritten to respond to shut down the user code properly.

指定者:

cancel 在接口中 TaskInvokable

覆盖:

cancel 在类中 AbstractInvokable

返回:

a future that is completed when this AbstractInvokable is fully terminated. Note that it may never complete if the invokable is stuck.

抛出:

Exception

createRuntimeContext

public DistributedRuntimeUDFContext createRuntimeContext()