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From "Prasanth J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-6761) Hashcode computation does not use maximum parallelism for scalable dynamic partitioning
Date Wed, 26 Mar 2014 23:26:24 GMT

    [ https://issues.apache.org/jira/browse/HIVE-6761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13948644#comment-13948644
] 

Prasanth J commented on HIVE-6761:
----------------------------------

This is the reason of lesser hashcodes generation as mentioned by [~gopalv] here https://issues.apache.org/jira/browse/HIVE-6735?focusedCommentId=13948046&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13948046

> Hashcode computation does not use maximum parallelism for scalable dynamic partitioning
> ---------------------------------------------------------------------------------------
>
>                 Key: HIVE-6761
>                 URL: https://issues.apache.org/jira/browse/HIVE-6761
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor
>    Affects Versions: 0.13.0, 0.14.0
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>             Fix For: 0.13.0, 0.14.0
>
>         Attachments: HIVE-6761.1.patch
>
>
> Hashcode computation for HIVE-6455 should consider all the partitioning columns and bucket
number to distribute the rows. The following code 
> {code}
> for (int i = 0; i < partitionEval.length - 1; i++) {
> {code}
> ignores the last partition column thereby generating lesser hashcodes.



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