hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-15104) Hive on Spark generate more shuffle data than hive on mr
Date Fri, 13 Oct 2017 17:08:01 GMT

    [ https://issues.apache.org/jira/browse/HIVE-15104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16203867#comment-16203867
] 

Xuefu Zhang commented on HIVE-15104:
------------------------------------

I think it's fairly safe to assume that hive-exec.jar and the new jar are in the same location.
We can error out if the jar cannot be found in that location.

> Hive on Spark generate more shuffle data than hive on mr
> --------------------------------------------------------
>
>                 Key: HIVE-15104
>                 URL: https://issues.apache.org/jira/browse/HIVE-15104
>             Project: Hive
>          Issue Type: Bug
>          Components: Spark
>    Affects Versions: 1.2.1
>            Reporter: wangwenli
>            Assignee: Rui Li
>         Attachments: HIVE-15104.1.patch, HIVE-15104.2.patch, HIVE-15104.3.patch, HIVE-15104.4.patch,
HIVE-15104.5.patch, HIVE-15104.5.patch, TPC-H 100G.xlsx
>
>
> the same sql,  running on spark  and mr engine, will generate different size of shuffle
data.
> i think it is because of hive on mr just serialize part of HiveKey, but hive on spark
which using kryo will serialize full of Hivekey object.  
> what is your opionion?



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

Mime
View raw message