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From "Thomas Graves (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-10901) spark.yarn.user.classpath.first doesn't work
Date Thu, 01 Oct 2015 16:17:27 GMT

     [ https://issues.apache.org/jira/browse/SPARK-10901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thomas Graves reassigned SPARK-10901:
-------------------------------------

    Assignee: Thomas Graves

> spark.yarn.user.classpath.first doesn't work
> --------------------------------------------
>
>                 Key: SPARK-10901
>                 URL: https://issues.apache.org/jira/browse/SPARK-10901
>             Project: Spark
>          Issue Type: Bug
>          Components: YARN
>    Affects Versions: 1.5.1
>            Reporter: Thomas Graves
>            Assignee: Thomas Graves
>            Priority: Critical
>
> spark.yarn.user.classpath.first doesn't properly add the app jar to the system class
path first.  It has some logic there that i believe works for local files but running on yarn
using distributed cache to distribute the app jar doesn't put __app__.jar into the classpath
at all.
> This is a break in backwards compatibility.
> Note that in this case the user is trying to use different version of kryo (which used
to work in spark 1.2) and the new configs for this: spark.{driver, executor}.userClassPathFirst
don't allow this as it errors out with:
> User class threw exception: java.lang.LinkageError: loader constraint violation: loader
(instance of org/apache/spark/util/ChildFirstURLClassLoader) previously initiated loading
for a different type with name "com/esotericsoftware/kryo/Kryo"



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