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https://issues.apache.org/jira/browse/FLINK-2406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephan Ewen closed FLINK-2406.
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> 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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