[jira] [Commented] (SPARK-24149) Automatic namespaces discovery in HDFS federation

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-24149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16536586#comment-16536586 ] 

Apache Spark commented on SPARK-24149:
--------------------------------------

User 'wangyum' has created a pull request for this issue:
https://github.com/apache/spark/pull/21734

> Automatic namespaces discovery in HDFS federation
> -------------------------------------------------
>
>                 Key: SPARK-24149
>                 URL: https://issues.apache.org/jira/browse/SPARK-24149
>             Project: Spark
>          Issue Type: Improvement
>          Components: YARN
>    Affects Versions: 2.4.0
>            Reporter: Marco Gaido
>            Assignee: Marco Gaido
>            Priority: Minor
>             Fix For: 2.4.0
>
>
> Hadoop 3 introduced HDFS federation.
> Spark fails to write on different namespaces when Hadoop federation is turned on and the cluster is secure. This happens because Spark looks for the delegation token only for the defaultFS configured and not for all the available namespaces. A workaround is the usage of the property {{spark.yarn.access.hadoopFileSystems}}.



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