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ASF GitHub Bot commented on FLINK-2111: --------------------------------------- Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/750#discussion_r46174663 --- Diff: flink-runtime/src/main/scala/org/apache/flink/runtime/messages/TaskControlMessages.scala --- @@ -59,6 +59,15 @@ object TaskMessages { extends TaskMessage with RequiresLeaderSessionID /** + * Stops the task associated with [[attemptID]]. The result is sent back to the sender as a + * [[TaskOperationResult]] message. + * + * @param attemptID The task's execution attempt ID. + */ + case class StopTask(attemptID: ExecutionAttemptID) + extends TaskMessage --- End diff -- This class should also extend `RequiresLeaderSessionID`. > Add "stop" signal to cleanly shutdown streaming jobs > ---------------------------------------------------- > > Key: FLINK-2111 > URL: https://issues.apache.org/jira/browse/FLINK-2111 > Project: Flink > Issue Type: Improvement > Components: Distributed Runtime, JobManager, Local Runtime, > Streaming, TaskManager, Webfrontend > Reporter: Matthias J. Sax > Assignee: Matthias J. Sax > Priority: Minor > > Currently, streaming jobs can only be stopped using "cancel" command, what is > a "hard" stop with no clean shutdown. > The new introduced "stop" signal, will only affect streaming source tasks > such that the sources can stop emitting data and shutdown cleanly, resulting > in a clean shutdown of the whole streaming job. > This feature is a pre-requirment for > https://issues.apache.org/jira/browse/FLINK-1929 -- This message was sent by Atlassian JIRA (v6.3.4#6332)