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https://issues.apache.org/jira/browse/FLINK-6482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16019735#comment-16019735
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ASF GitHub Bot commented on FLINK-6482:
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Github user rmetzger commented on the issue:
https://github.com/apache/flink/pull/3937
Thanks a lot for the quick review and merge!!
> Add nested serializers into configuration snapshots of composite serializers
> ----------------------------------------------------------------------------
>
> Key: FLINK-6482
> URL: https://issues.apache.org/jira/browse/FLINK-6482
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing, Type Serialization System
> Reporter: Tzu-Li (Gordon) Tai
> Assignee: Tzu-Li (Gordon) Tai
> Priority: Blocker
> Fix For: 1.3.0
>
>
> Currently, the composite serializers' configuration snapshots only wrap the
> config snapshots of nested serializers.
> We should also consider adding serialization of the nested serializers into
> the config snapshot, so that in the case where only some nested serializer
> cannot be loaded (class missing / implementation changed), we can also
> provide a path for serializer upgrades.
> This applies for all composite serializers that have nested serializers.
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