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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4471) Rocks backend fully async snapshot restore fails with custom serializers
Date Wed, 24 Aug 2016 12:33:20 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15434829#comment-15434829
] 

ASF GitHub Bot commented on FLINK-4471:
---------------------------------------

Github user aljoscha commented on the issue:

    https://github.com/apache/flink/pull/2413
  
    It should be fixed by not loading the `StateDescriptor` anymore, yes. We should maybe
only merge it on the 1.1.* release branch because for 1.2 it will be overwritten by our changes.


> Rocks backend fully async snapshot restore fails with custom serializers
> ------------------------------------------------------------------------
>
>                 Key: FLINK-4471
>                 URL: https://issues.apache.org/jira/browse/FLINK-4471
>             Project: Flink
>          Issue Type: Bug
>          Components: State Backends, Checkpointing, Streaming
>    Affects Versions: 1.1.0
>            Reporter: Gyula Fora
>            Assignee: Gyula Fora
>            Priority: Critical
>
> The StateDescriptor is not deserialized with the usercode classloader. This makes restore
fail with NoClassDefFound error if the user uses custom type serializers:
> https://github.com/apache/flink/blob/master/flink-contrib/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBStateBackend.java#L583



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