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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-9251) SetSparkReducerParallelism is likely to set too small number of reducers [Spark Branch]
Date Sun, 04 Jan 2015 16:41:34 GMT

    [ https://issues.apache.org/jira/browse/HIVE-9251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14263897#comment-14263897
] 

Xuefu Zhang commented on HIVE-9251:
-----------------------------------

Could you please create SPARK JIRA(s) to request missing features? Thanks.

> SetSparkReducerParallelism is likely to set too small number of reducers [Spark Branch]
> ---------------------------------------------------------------------------------------
>
>                 Key: HIVE-9251
>                 URL: https://issues.apache.org/jira/browse/HIVE-9251
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>            Reporter: Rui Li
>            Assignee: Rui Li
>         Attachments: HIVE-9251.1-spark.patch
>
>
> This may hurt performance or even lead to task failures. For example, spark's netty-based
shuffle limits the max frame size to be 2G.



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