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  1. Hive
  2. HIVE-24503

Optimize vector row serde by avoiding type check at run time

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Hive

      Description

      Serialization/Deserialization of vectorized batch done at VectorSerializeRow and VectorDeserializeRow does a type checking for each column of each row. This becomes very costly when there are billions of rows to read/write. This can be optimized if the type check is done during init time and specific reader/writer classes are created. This classes can be used directly stored in filed structure to avoid run time type check.

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              • Assignee:
                maheshk114 mahesh kumar behera
                Reporter:
                maheshk114 mahesh kumar behera
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