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https://issues.apache.org/jira/browse/SPARK-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14376065#comment-14376065
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Thomas Graves commented on SPARK-6469:
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Note if its purely the documentation confused you then we should update
documentation to clarify the client/cluster mode differences.
> Local directories configured for YARN are not used in yarn-client mode
> ----------------------------------------------------------------------
>
> Key: SPARK-6469
> URL: https://issues.apache.org/jira/browse/SPARK-6469
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Reporter: Christophe PRÉAUD
> Priority: Minor
> Attachments: TestYarnVars.scala
>
>
> According to the [Spark YARN doc
> page|http://spark.apache.org/docs/latest/running-on-yarn.html#important-notes],
> Spark executors will use the local directories configured for YARN, not
> spark.local.dir which should be ignored.
> If this works correctly in yarn-cluster mode, I've found out that it is not
> the case in yarn-client mode.
> The problem seems to originate in the method
> [isRunningInYarnContainer|https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/util/Utils.scala#L686].
> Indeed, I've checked with a simple application that the {{CONTAINER_ID}}
> environment variable is correctly set in yarn-cluster mode (to something like
> {{container_1426666761810_0151_01_000001}}, but not in yarn-client mode.
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