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Date: Tue, 28 Jul 2015 17:51:09 +0000 (UTC)
From: "ASF GitHub Bot (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (FLINK-2406) Abstract BarrierBuffer to an
 exchangeable BarrierHandler
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    [ https://issues.apache.org/jira/browse/FLINK-2406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14644754#comment-14644754 ] 

ASF GitHub Bot commented on FLINK-2406:
---------------------------------------

Github user StephanEwen commented on the pull request:

    https://github.com/apache/flink/pull/938#issuecomment-125692765
  
    It is strange that some tests take forever now. I cannot see why this test causes this. I also cannot reproduce this locally, it only occurs on Travis.
    
    But I debug this further...


> Abstract BarrierBuffer to an exchangeable BarrierHandler
> --------------------------------------------------------
>
>                 Key: FLINK-2406
>                 URL: https://issues.apache.org/jira/browse/FLINK-2406
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Streaming
>    Affects Versions: 0.10
>            Reporter: Stephan Ewen
>            Assignee: Stephan Ewen
>             Fix For: 0.10
>
>
> We need to make the Checkpoint handling pluggable, to allow us to use different implementations:
>   - BarrierBuffer for "exactly once" processing. This inevitably introduces a bit of latency.
>   - BarrierTracker for "at least once" processing, with no added latency.


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