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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-9258) Explain query should share the same Spark application with regular queries [Spark Branch]
Date Tue, 13 Jan 2015 03:04:34 GMT

    [ https://issues.apache.org/jira/browse/HIVE-9258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14274632#comment-14274632
] 

Xuefu Zhang commented on HIVE-9258:
-----------------------------------

Makes sense. Thanks for the explanation.

> Explain query should share the same Spark application with regular queries [Spark Branch]
> -----------------------------------------------------------------------------------------
>
>                 Key: HIVE-9258
>                 URL: https://issues.apache.org/jira/browse/HIVE-9258
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>            Reporter: Xuefu Zhang
>            Assignee: Jimmy Xiang
>
> Currently for Hive on Spark, query plan includes the number of reducers, which is determined
partly by the Spark cluster. Thus, explain query will need to launch a Spark application (Spark
remote context), which should be shared with regular queries so that we don't launch additional
Spark remote context.



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