[jira] [Created] (FLINK-4471) Rocks backend fully async snapshot restore fails with custom serializers

[Shang Yuanchun (Jira)]

Gyula Fora created FLINK-4471:
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             Summary: 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
            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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