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https://issues.apache.org/jira/browse/FLINK-8807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16386197#comment-16386197
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Aljoscha Krettek commented on FLINK-8807:
-----------------------------------------
Fixed on release-1.5 in
f8681a9d7732f6f36483e26ec68624809f6cd4b1
Fixed on master in
4226bf22aab5b4359998422fe53755db19785515
> ZookeeperCompleted checkpoint store can get stuck in infinite loop
> ------------------------------------------------------------------
>
> Key: FLINK-8807
> URL: https://issues.apache.org/jira/browse/FLINK-8807
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Affects Versions: 1.5.0
> Reporter: Aljoscha Krettek
> Priority: Blocker
> Fix For: 1.5.0
>
>
> This code:
> https://github.com/apache/flink/blob/9071e3befb8c279f73c3094c9f6bddc0e7cce9e5/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/ZooKeeperCompletedCheckpointStore.java#L201
> can be stuck forever if at least one checkpoint is not readable because
> {{CompletedCheckpoint}} does not have a proper {{equals()}}/{{hashCode()}}
> anymore.
> We have to fix this and also add a unit test that verifies the loop still
> works if we make one snapshot unreadable.
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