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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-2111) Add "stop" signal to cleanly shutdown streaming jobs
Date Fri, 10 Jul 2015 13:17:04 GMT

    [ https://issues.apache.org/jira/browse/FLINK-2111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14622264#comment-14622264
] 

ASF GitHub Bot commented on FLINK-2111:
---------------------------------------

Github user mjsax commented on the pull request:

    https://github.com/apache/flink/pull/750#issuecomment-120408249
  
    Changes applied:
    - renamed signal name from TERMINATE to STOP (as decided by community vote)
    - reverted changes to execution graph state machine
    - added interface `Stopable` an reverted method `AbstractInvocable.stop()`
    - added `JobType` enum (Batching / Streaming) [as discussed at last Meetup with @StephanEwen
]
    - extended test coverage
    
    Please review again.


> 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



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