Github user choang commented on the pull request:
https://github.com/apache/storm/pull/705#issuecomment-143655914
I recommend making your abstraction at the state store, so you would have:
```
public interface StateStore {
public void write(Partition p, long offset);
public long read(Partition p);
}
public class ZkStateStore implements StateStore {
...
}
public class KafkaStateStore implements StateStore {
...
}
/**
Some topologies read from LATEST after a restart, so only memory state is
needed.
*/
public class MemoryStateStore implements StateStore {
...
}
```
You would not need different PartitionStateManager for different stores.
You would just have:
```
public class PartitionStateManager {
public PartitionStateManager (..., StateStore store) { ... }
public void writeState(...) {
store.write(...);
}
}
```
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