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https://issues.apache.org/jira/browse/SPARK-5582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14304599#comment-14304599
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Apache Spark commented on SPARK-5582:
-------------------------------------

User 'vanzin' has created a pull request for this issue:
https://github.com/apache/spark/pull/4352

> History server does not list anything if log root contains an empty directory
> -----------------------------------------------------------------------------
>
>                 Key: SPARK-5582
>                 URL: https://issues.apache.org/jira/browse/SPARK-5582
>             Project: Spark
>          Issue Type: Bug
>            Reporter: Marcelo Vanzin
>
> As summary says. Exception from logs:
> {noformat}
> 15/02/03 17:35:10.292 
> pool-1-thread-1-ScalaTest-running-FsHistoryProviderSuite ERROR 
> FsHistoryProvider: Exception in checking for event log updates
> java.lang.UnsupportedOperationException: empty.max
>         at 
> scala.collection.TraversableOnce$class.max(TraversableOnce.scala:216)
>         at scala.collection.AbstractTraversable.max(Traversable.scala:105)
>         at 
> org.apache.spark.deploy.history.FsHistoryProvider.org$apache$spark$deploy$history$FsHistoryProvider$$getModificationTime(FsHistoryProvider.scala:315)
> {noformat}
> Patch coming up.



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