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Posted to dev@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2016/08/04 22:33:20 UTC

[jira] [Created] (HIVE-14434) Vectorization: BytesBytes lookup capped count can be =0, =1, >=2

Gopal V created HIVE-14434:
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             Summary: Vectorization: BytesBytes lookup capped count can be =0, =1, >=2
                 Key: HIVE-14434
                 URL: https://issues.apache.org/jira/browse/HIVE-14434
             Project: Hive
          Issue Type: Improvement
          Components: Vectorization
    Affects Versions: 2.2.0
            Reporter: Gopal V
            Assignee: Gopal V


BytesBytesHashmap does not implement deep counters for the depth of a probe - but however it does distinguish between 0, 1 and > 1 rows.

This information can be used in the vectorized hash join to avoid copying the probe side keys.



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