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Posted to dev@hive.apache.org by "Mithun Radhakrishnan (JIRA)" <ji...@apache.org> on 2017/10/02 20:58:01 UTC

[jira] [Created] (HIVE-17669) Cache to optimize SearchArgument deserialization

Mithun Radhakrishnan created HIVE-17669:
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             Summary: Cache to optimize SearchArgument deserialization
                 Key: HIVE-17669
                 URL: https://issues.apache.org/jira/browse/HIVE-17669
             Project: Hive
          Issue Type: Improvement
          Components: ORC, Query Processor
    Affects Versions: 2.2.0, 3.0.0
            Reporter: Mithun Radhakrishnan
            Assignee: Chris Drome


And another, from [~selinazh] and [~cdrome]. (YHIVE-927)

When a mapper needs to process multiple ORC files, it might land up having use essentially the same {{SearchArgument}} over several files. It would be good not to have to deserialize from string, over and over again. Caching the object against the string-form should speed things up.



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