hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Eric Hanson (JIRA)" <>
Subject [jira] [Commented] (HIVE-5757) Implement vectorized support for CASE
Date Thu, 02 Jan 2014 17:51:50 GMT


Eric Hanson commented on HIVE-5757:

Updated description to match the patch (saying that it uses the vectorized UDF adaptor internally).

> Implement vectorized support for CASE
> -------------------------------------
>                 Key: HIVE-5757
>                 URL:
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: 0.13.0
>            Reporter: Eric Hanson
>            Assignee: Eric Hanson
>         Attachments: HIVE-5757.1.patch, HIVE-5757.2.patch, HIVE-5757.3.patch
> Implement support for CASE in vectorized mode. The approach is to use the vectorized
UDF adaptor internally. A higher-performance version that used VectorExpression subclasses
was considered but not done due to complexity. Such a version potentially could be done in
the future if it's important enough.
> This is high priority because CASE is a fairly popular expression.

This message was sent by Atlassian JIRA

View raw message