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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-22319) SparkSubmit calls getFileStatus before calling loginUserFromKeytab
Date Fri, 20 Oct 2017 04:54:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-22319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16212161#comment-16212161
] 

Apache Spark commented on SPARK-22319:
--------------------------------------

User 'sjrand' has created a pull request for this issue:
https://github.com/apache/spark/pull/19540

> SparkSubmit calls getFileStatus before calling loginUserFromKeytab
> ------------------------------------------------------------------
>
>                 Key: SPARK-22319
>                 URL: https://issues.apache.org/jira/browse/SPARK-22319
>             Project: Spark
>          Issue Type: Bug
>          Components: Deploy, Spark Core
>    Affects Versions: 2.3.0
>            Reporter: Steven Rand
>
> In the SparkSubmit code, we call {{resolveGlobPaths}}, which eventually calls {{getFileStatus}},
which for HDFS is an RPC call to the NameNode: https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala#L346.
> We do this before we call {{loginUserFromKeytab}}, which is further down in the same
method: https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala#L655.
> The result is that the call to {{resolveGlobPaths}} fails in secure clusters with:
> {code}
> javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid
credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
> {code}
> A workaround is to {{kinit}} on the host before using spark-submit. However, it's better
if this workaround isn't necessary. A simple fix is to call loginUserFromKeytab before attempting
to interact with HDFS.
> At least for cluster mode, this would appear to be a regression caused by SPARK-21012.



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