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https://issues.apache.org/jira/browse/FLINK-2713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14900481#comment-14900481
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ASF GitHub Bot commented on FLINK-2713:
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Github user gyfora closed the pull request at:
https://github.com/apache/flink/pull/1150
> Custom StateCheckpointers should be included in the snapshots
> -------------------------------------------------------------
>
> Key: FLINK-2713
> URL: https://issues.apache.org/jira/browse/FLINK-2713
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Gyula Fora
> Assignee: Gyula Fora
>
> Currently the restoreInitialState call fails when the user uses a custom
> StateCheckpointer to create the snapshot, because the state is restored
> before the StateCheckpointer is set for the StreamOperatorState. (because the
> restoreInitialState() call precedes the open() call)
> To avoid this issue, the custom StateCheckpointer instance should be stored
> within the snapshot and should be set in the StreamOperatorState before
> calling restoreState(..).
> To reduce the overhead induced by this we can do 2 optimizations:
> - We only include custom StateCheckpointers (the default java serializer one
> is always available)
> - We only serialize the checkpointer once and store the byte array in the
> snapshot
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