[GitHub] [flink] azagrebin commented on pull request #6777: [FLINK-10461] [State Backends, Checkpointing] Speed up download files when restore from DFS

[GitHub]

I think it would be more maintainable if we extract these 3 methods:
- `transferAllStateDataToDirectory`
- `transferAllDataFromStateHandles`
- `copyStateDataHandleData`
into a separate class file, e.g. `RocksDbStateDataTransfer`.
`RocksDBKeyedStateBackend` already contains a lot.

[ Full content available at: https://github.com/apache/flink/pull/6777 ]
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