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Posted to issues@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2016/08/04 22:37:20 UTC

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

     [ https://issues.apache.org/jira/browse/HIVE-14434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gopal V updated HIVE-14434:
---------------------------
    Attachment: HIVE-14434.1.patch

> 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
>         Attachments: HIVE-14434.1.patch
>
>
> 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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