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https://issues.apache.org/jira/browse/FLINK-6856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16656930#comment-16656930
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Till Rohrmann commented on FLINK-6856:
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What's the state of this issue [~tzulitai]? Is it still valid? If so, shall we
make it a subtask of FLINK-9376.
> Eagerly check if serializer config snapshots are deserializable when
> snapshotting
> ---------------------------------------------------------------------------------
>
> Key: FLINK-6856
> URL: https://issues.apache.org/jira/browse/FLINK-6856
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing
> Affects Versions: 1.3.0, 1.4.2, 1.5.1, 1.6.0
> Reporter: Tzu-Li (Gordon) Tai
> Assignee: Tzu-Li (Gordon) Tai
> Priority: Critical
> Fix For: 1.7.0
>
>
> Currently, if serializer config snapshots are not deserializable (for
> example, if the user did not correctly include the deserialization empty
> constructor, or the read / write methods are simply wrongly implemented),
> user's would only be able to find out this when restoring from the snapshot.
> We could eagerly do a check for this when snapshotting, and fail with a good
> message indicating that the config snapshot can not be deserialized.
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