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Posted to issues@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2015/06/17 17:58:00 UTC
[jira] [Updated] (HIVE-11035) PPD: Orc Split elimination fails
because filterColumns=[-1]
[ https://issues.apache.org/jira/browse/HIVE-11035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gopal V updated HIVE-11035:
---------------------------
Affects Version/s: 2.0.0
1.3.0
1.2.0
> PPD: Orc Split elimination fails because filterColumns=[-1]
> -----------------------------------------------------------
>
> Key: HIVE-11035
> URL: https://issues.apache.org/jira/browse/HIVE-11035
> Project: Hive
> Issue Type: Bug
> Affects Versions: 1.2.0, 1.3.0, 2.0.0
> Reporter: Gopal V
>
> {code}
> create temporary table xx (x int) stored as orc ;
> insert into xx values (20),(200);
> set hive.fetch.task.conversion=none;
> select * from xx where x is null;
> {code}
> This should generate zero tasks after optional split elimination in the app master, instead of generating the 1 task which for sure hits the row-index filters and removes all rows anyway.
> Right now, this runs 1 task for the stripe containing (min=20, max=200, has_null=false), which is broken.
> Instead, it returns YES_NO_NULL from the following default case
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcInputFormat.java#L976
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