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https://issues.apache.org/jira/browse/SPARK-9833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14694041#comment-14694041
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Apache Spark commented on SPARK-9833:
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User 'vanzin' has created a pull request for this issue:
https://github.com/apache/spark/pull/8134
> Add options to explicitly disable delegation token retrieval for non-HDFS
> -------------------------------------------------------------------------
>
> Key: SPARK-9833
> URL: https://issues.apache.org/jira/browse/SPARK-9833
> Project: Spark
> Issue Type: Improvement
> Components: YARN
> Affects Versions: 1.4.0, 1.5.0
> Reporter: Marcelo Vanzin
> Priority: Minor
>
> In 1.4, code was added to fetch delegation tokens for Hive metastores and
> HBase masters. That code is run regardless of whether the user app actually
> needs those tokens, since there's no way for Spark to know otherwise.
> In the best case, that's just unnecessary overhead. In some cases, the Hadoop
> / Hive / HBase configuration being loaded may contain references to things
> that Spark doesn't have access to (e.g. Sentry classes), and the Spark
> application might fail to start.
> Adding explicit configuration options to disable those would help, since
> currently the only way is to set some specific Hive / HBase configuration
> values, which is kinda brittle.
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