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Posted to dev@hive.apache.org by "Xuefu Zhang (JIRA)" <ji...@apache.org> on 2013/10/16 19:53:42 UTC
[jira] [Updated] (HIVE-5565) Limit Hive decimal type maximum
precision and scale to 38
[ https://issues.apache.org/jira/browse/HIVE-5565?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xuefu Zhang updated HIVE-5565:
------------------------------
Description:
With HIVE-3976, the maximum precision is set to 65, and maximum scale is to 30. After discussing with several folks in the community, it's determined that 38 as a maximum for both precision and scale are probably sufficient, in addition to the potential performance boost that might become possible to some implementation.
This task is to make such a change. The change is expected to be trivial, but it may impact many test cases. The reason for a separate JIRA is that patch in HIVE-3976 is already in a good shape. Rather than destabilizing a bigger patch, a dedicate patch will facilitates both reviews.
The wiki document will be updated shortly.
was:
With HIVE-3976, the maximum precision is set to 65, and maximum scale is to 30. After discussing with several folks in the community, it's determined that 38 as a maximum for both precision and scale are probably sufficient, in addition to the potential performance boost that might become possible to some implementation.
This task is to make such a change. The change is expected to be trivial, but it may impact many test cases. The reason for a separate JIRA is that patch in HIVE-3976 is already in a good shape. Rather than destabilizing a bigger patch, a dedicate patch will facilitates both reviews.
> Limit Hive decimal type maximum precision and scale to 38
> ---------------------------------------------------------
>
> Key: HIVE-5565
> URL: https://issues.apache.org/jira/browse/HIVE-5565
> Project: Hive
> Issue Type: Task
> Components: Types
> Affects Versions: 0.13.0
> Reporter: Xuefu Zhang
> Assignee: Xuefu Zhang
> Fix For: 0.13.0
>
>
> With HIVE-3976, the maximum precision is set to 65, and maximum scale is to 30. After discussing with several folks in the community, it's determined that 38 as a maximum for both precision and scale are probably sufficient, in addition to the potential performance boost that might become possible to some implementation.
> This task is to make such a change. The change is expected to be trivial, but it may impact many test cases. The reason for a separate JIRA is that patch in HIVE-3976 is already in a good shape. Rather than destabilizing a bigger patch, a dedicate patch will facilitates both reviews.
> The wiki document will be updated shortly.
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