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  1. Apache Arrow
  2. ARROW-6853

[Java] Support vector and dictionary encoder use different hasher for calculating hashCode

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    Details

    • Type: New Feature
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.16.0
    • Component/s: Java

      Description

      Hasher interface was introduce in ARROW-5898 and now have two different implementations (MurmurHasher and SimpleHasher) and it could be more in the future.

      And currently ValueVector#hashCode and DictionaryHashTable only use SimpleHasher for calculating hashCode. This issue enables them to use different hasher or even user-defined hasher for their own use cases.

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              • Assignee:
                tianchen92 Ji Liu
                Reporter:
                tianchen92 Ji Liu
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