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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