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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 Mon, 07 Sep 2015 12:02:45 GMT

    [ https://issues.apache.org/jira/browse/FLINK-2111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14733587#comment-14733587
] 

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

Github user rmetzger commented on a diff in the pull request:

    https://github.com/apache/flink/pull/750#discussion_r38856545
  
    --- Diff: docs/apis/cli.md ---
    @@ -185,6 +189,18 @@ Action "list" lists running and scheduled programs.
          -s,--scheduled                Show only scheduled programs and their JobIDs
     
     
    +Action "stop" stops a running program (streaming jobs only).
    +
    +  Syntax: stop [OPTIONS] <Job ID>
    +  "stop" action options:
    +     -m,--jobmanager <host:port>   Address of the JobManager (master) to which
    +                                   to connect. Specify 'yarn-cluster' as the
    +                                   JobManager to deploy a YARN cluster for the
    +                                   job. Use this flag to connect to a different
    --- End diff --
    
    If you put "-m yarn-cluster", it will deploy a YARN cluster from the client. The "-m yarn
cluster" option should only be available to the "run" command.
    For stop, users should usually not specify the JobManager address, because
    - in standalone mode, the JM address is in the conf
    - in YARN Mode, the JM address is in a special `.yarn-properties` file.
    Only if that is not working, users can use the "-m <jobmanager:port>".


> 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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