Github user aljoscha commented on the pull request: https://github.com/apache/flink/pull/1305#issuecomment-153333538 2. Ah, I meant the lookupTimestamp. In an earlier version you used both the checkpointId and lookupTimestamp to perform key lookups. 3. I see, in this implementation of state the timestamp has basically assumed the role of the checkpointId and the checkpointId is (I think) completely ignored. Correct? Couldn't we then change the semantics of the checkpointId to work like the timestamps (they are somewhat logical, not physical timestamps anyways)?
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