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Posted to dev@hive.apache.org by "Eric Hanson (JIRA)" <ji...@apache.org> on 2013/12/10 21:24:07 UTC
[jira] [Assigned] (HIVE-5762) Implement vectorized support for the
DECIMAL data type
[ https://issues.apache.org/jira/browse/HIVE-5762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eric Hanson reassigned HIVE-5762:
---------------------------------
Assignee: Eric Hanson
> Implement vectorized support for the DECIMAL data type
> ------------------------------------------------------
>
> Key: HIVE-5762
> URL: https://issues.apache.org/jira/browse/HIVE-5762
> Project: Hive
> Issue Type: Sub-task
> Reporter: Eric Hanson
> Assignee: Eric Hanson
>
> Add support to allow queries referencing DECIMAL columns and expression results to run efficiently in vectorized mode. Include unit tests and end-to-end tests.
> Before starting or at least going very far, please write design specification (a new section for the design spec attached to HIVE-4160) for how support for the different DECIMAL types should work in vectorized mode, and the roadmap, and have it reviewed.
> It may be feasible to re-use LongColumnVector and related VectorExpression classes for fixed-point decimal in certain data ranges. That should be at least considered to get faster performance and save code. For unlimited precision DECIMAL, a new column vector subtype may be needed, or a BytesColumnVector could be re-used.
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