ASF GitHub Bot commented on FLINK-4579:

Github user wuchong commented on the issue:

    Hi @StephanEwen ,  if we want to have a shortcut (`rocksdb`),  what should 
we do?  Add the rocksdb dependency into `flink-streaming-java` module ?  Or use 
java reflect ?

> Add StateBackendFactory for RocksDB Backend
> -------------------------------------------
>                 Key: FLINK-4579
>                 URL: https://issues.apache.org/jira/browse/FLINK-4579
>             Project: Flink
>          Issue Type: Improvement
>          Components: State Backends, Checkpointing
>            Reporter: Aljoscha Krettek
>            Assignee: Jark Wu
> Right now, we only have a {{StateBackendFactory}} for the {{FsStateBackend}} 
> which means that users cannot specify to use the RocksDB backend in the flink 
> configuration.
> If we add a factory for rocksdb we should also think about adding the rocksdb 
> backend to the standard distribution lib, otherwise it is only usable if 
> users manually place the rocks jars in the Flink lib folder.

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