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Posted to dev@kafka.apache.org by "Guozhang Wang (JIRA)" <ji...@apache.org> on 2016/05/16 21:59:12 UTC

[jira] [Created] (KAFKA-3716) Check against negative timestamps

Guozhang Wang created KAFKA-3716:
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             Summary: Check against negative timestamps
                 Key: KAFKA-3716
                 URL: https://issues.apache.org/jira/browse/KAFKA-3716
             Project: Kafka
          Issue Type: Bug
          Components: streams
            Reporter: Guozhang Wang
            Assignee: Guozhang Wang


Although currently we do not enforce any semantic meaning on the {{Long}} typed timestamps, we are actually assuming it to be non-negative while storing the timestamp in windowed store. For example, in {{RocksDBWindowStore}} we store the timestamp as part of the key, and relying on RocksDB's default lexicographic byte array comparator, and hence negative long value stored in RocksDB will cause the range search ordering to be messed up.



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