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https://issues.apache.org/jira/browse/FLINK-1953?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14540722#comment-14540722
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ASF GitHub Bot commented on FLINK-1953:
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Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/651
> Rework Checkpoint Coordinator
> -----------------------------
>
> Key: FLINK-1953
> URL: https://issues.apache.org/jira/browse/FLINK-1953
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 0.9
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Fix For: 0.9
>
>
> The checkpoint coordinator currently contains no tests and is vulnerable to a
> variety of situations. In particular, I propose to add:
> - Better configurability which tasks receive the trigger checkpoint
> messages, which tasks need to acknowledge the checkpoint, and which tasks
> need to receive confirmation messages.
> - checkpoint timeouts, such that incomplete checkpoints are guaranteed to be
> cleaned up after a while, regardless of successful checkpoints
> - better sanity checking of messages and fields, to properly handle/ignore
> messages for old/expired checkpoints, or invalidly routed messages
> - Better handling of checkpoint attempts at points where the execution has
> just failed is is currently being canceled.
> - Add a good set of tests
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