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https://issues.apache.org/jira/browse/FLINK-5940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15923778#comment-15923778
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ASF GitHub Bot commented on FLINK-5940:
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Github user tillrohrmann commented on the issue:
https://github.com/apache/flink/pull/3451
Thanks for the review @StephanEwen. See comment on #3446 for the test.
Merging this PR.
> ZooKeeperCompletedCheckpointStore cannot handle broken state handles
> --------------------------------------------------------------------
>
> Key: FLINK-5940
> URL: https://issues.apache.org/jira/browse/FLINK-5940
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Affects Versions: 1.2.0, 1.1.4, 1.3.0
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
> Fix For: 1.3.0, 1.1.5, 1.2.1
>
>
> The {{ZooKeeperCompletedCheckpointStore}} reads a set of
> {{RetrievableStateHandles}} from ZooKeeper upon recovery. It then tries to
> retrieve the {{CompletedCheckpoint}} from the latest state handle. If the
> retrieve operation fails, then the whole recovery of completed checkpoints
> fails even though the store might have read older state handles from
> ZooKeeper.
> I propose to harden the behaviour by removing broken state handles and
> returning the first successfully retrieved {{CompletedCheckpoint}}.
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