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https://issues.apache.org/jira/browse/FLINK-5335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15748062#comment-15748062
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ASF GitHub Bot commented on FLINK-5335:
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Github user StefanRRichter commented on the issue:
https://github.com/apache/flink/pull/3005
CC @aljoscha
> Allow ListCheckpointed user functions to return null
> ----------------------------------------------------
>
> Key: FLINK-5335
> URL: https://issues.apache.org/jira/browse/FLINK-5335
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing
> Reporter: Stefan Richter
> Assignee: Stefan Richter
>
> Currently, it is not allowed to return null as result for the methods in
> {{ListCheckpointed}}. From a usability perspective, I think it is nicer to
> allow this.
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