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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-15302) Relax the requirement that HoS needs Spark built w/o Hive
Date Thu, 01 Dec 2016 05:13:58 GMT

    [ https://issues.apache.org/jira/browse/HIVE-15302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15710922#comment-15710922
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Xuefu Zhang commented on HIVE-15302:
------------------------------------

I think there are two dependency on Spark from Hive

  1. Spark runtime classes which used to be in spark-assembly.jar
  2. spark-submit.sh script that is used to submit spark application for a hive session.

For #1, I think spark.yarn.jars or spark.yarn.archive will do. 
For #2, I think we still need SPARK_HOME unless we clone a simplified spark installation in
Hive directory structure, which is not ideal.

Thus, SPARK_HOME seems still required. If so, Hive can automatically figure out spark.yarn.jars
or spark.yarn.archive if it's not already set, from SPARK_HOME. To speed file distribution,
an admin can point any of this properties to an HDFS location, which requires admin manually
upload files to HDFS beforehand.

As to spark.yarn.archive, I think one needs to zip all the jars, not the folder that contains
the jar. However, I didn't try and verify this.

> Relax the requirement that HoS needs Spark built w/o Hive
> ---------------------------------------------------------
>
>                 Key: HIVE-15302
>                 URL: https://issues.apache.org/jira/browse/HIVE-15302
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Rui Li
>            Assignee: Rui Li
>
> This requirement becomes more and more unacceptable as SparkSQL becomes widely adopted.
Let's use this JIRA to find out how we can relax the limitation.



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