hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Prasanth J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8740) Sorted dynamic partition does not work correctly with constant folding
Date Wed, 05 Nov 2014 07:10:34 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14197718#comment-14197718
] 

Prasanth J commented on HIVE-8740:
----------------------------------

[~alangates] Can you look at the test case that I added in this patch? Its related to ACID
DELETE operation. After deleting a newly added row, the select count\(*\) query return 0 rows
instead of actual 1000 rows. Is this a bug/known issue or am I doing something wrong?

> Sorted dynamic partition does not work correctly with constant folding
> ----------------------------------------------------------------------
>
>                 Key: HIVE-8740
>                 URL: https://issues.apache.org/jira/browse/HIVE-8740
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.14.0
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>         Attachments: HIVE-8740.1.patch
>
>
> Sorted dynamic partition optimization looks for partition columns from the operator above
FileSinkOperator. As per hive convention it expects partition columns at the last. But with
HIVE-8585 equality filters on partition columns gets folded to constant. The column pruner
then prunes the constant expression as they don't reference any columns. This in some cases
will yield unexpected results (throw ArrayIndexOutOfBounds exception) with sorted dynamic
partition insert optimization. In such we don't really need sorted dynamic partition optimization.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message