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Posted to dev@flink.apache.org by "Stephan Ewen (JIRA)" <ji...@apache.org> on 2016/02/16 22:16:18 UTC

[jira] [Created] (FLINK-3422) Scramble HashPartitioner hashes

Stephan Ewen created FLINK-3422:
-----------------------------------

             Summary: Scramble HashPartitioner hashes
                 Key: FLINK-3422
                 URL: https://issues.apache.org/jira/browse/FLINK-3422
             Project: Flink
          Issue Type: Improvement
          Components: Streaming
    Affects Versions: 0.10.2
            Reporter: Stephan Ewen
            Priority: Critical
             Fix For: 1.0.0


The {{HashPartitioner}} used by the streaming API does not apply any hash scrambling against bad user hash functions.

We should apply a murmor or jenkins hash on top of the hash code, similar as in the {{DataSet}} API.



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