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https://issues.apache.org/jira/browse/SPARK-39473?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Zsolt Piros resolved SPARK-39473.
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Resolution: Invalid
This is because of Scala 2.11 on latter version *asScala* is prepared to handle
null values.
> NullPointerException in SparkRackResolver
> ------------------------------------------
>
> Key: SPARK-39473
> URL: https://issues.apache.org/jira/browse/SPARK-39473
> Project: Spark
> Issue Type: Improvement
> Components: YARN
> Affects Versions: 2.4.8, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.1.0, 3.1.1, 3.1.2,
> 3.2.0, 3.2.1
> Reporter: Attila Zsolt Piros
> Assignee: Attila Zsolt Piros
> Priority: Major
>
> When the underlying DNSToSwitchMapping's resolver returns a null we get a
> NullPointerException:
> {noformat}
> 22/05/24 08:12:12 980 ERROR DAGSchedulerEventProcessLoop:
> DAGSchedulerEventProcessLoop failed; shutting down SparkContext
> java.lang.NullPointerException
> at
> scala.collection.convert.Wrappers$JListWrapper.isEmpty(Wrappers.scala:87)
> at
> org.apache.spark.deploy.yarn.SparkRackResolver.coreResolve(SparkRackResolver.scala:76)
> {noformat}
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