[jira] [Updated] (FLINK-8715) RocksDB does not propagate reconfiguration of serializer to the states

["Arvid Heise (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-8715?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arvid Heise updated FLINK-8715:
-------------------------------
    Summary: RocksDB does not propagate reconfiguration of serializer to the states  (was: RocksDB does propagate reconfiguration of serializer to the states)

> RocksDB does not propagate reconfiguration of serializer to the states
> ----------------------------------------------------------------------
>
>                 Key: FLINK-8715
>                 URL: https://issues.apache.org/jira/browse/FLINK-8715
>             Project: Flink
>          Issue Type: Bug
>    Affects Versions: 1.3.2
>            Reporter: Arvid Heise
>            Priority: Major
>
> Any changes to the serializer done in #ensureCompability are lost during the state creation.
> In particular, [https://github.com/apache/flink/blob/2f7392d77d85823d3db1f1e5a8d4f6c94358d773/flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBValueState.java#L68] always uses a fresh copy of the StateDescriptor.
> An easy fix is to pass the reconfigured serializer as an additional parameter in [https://github.com/apache/flink/blob/2f7392d77d85823d3db1f1e5a8d4f6c94358d773/flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBKeyedStateBackend.java#L1681] , which can be retrieved through the side-output of getColumnFamily
> ```
> kvStateInformation.get(stateDesc.getName()).f1.getStateSerializer()
> ```
> I encountered it in 1.3.2 but the code in the master seems unchanged (hence the pointer into master).



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