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https://issues.apache.org/jira/browse/SPARK-3647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Ash updated SPARK-3647:
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Fix Version/s: 1.2.0
> Shaded Guava patch causes access issues with package private classes
> --------------------------------------------------------------------
>
> Key: SPARK-3647
> URL: https://issues.apache.org/jira/browse/SPARK-3647
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.2.0
> Reporter: Marcelo Vanzin
> Assignee: Marcelo Vanzin
> Priority: Critical
> Fix For: 1.2.0
>
>
> The patch that introduced shading to Guava (SPARK-2848) tried to maintain
> backwards compatibility in the Java API by not relocating the "Optional"
> class. That causes problems when that class references package private
> members in the Absent and Present classes, which are now in a different
> package:
> {noformat}
> Exception in thread "main" java.lang.IllegalAccessError: tried to access
> class org.spark-project.guava.common.base.Present from class
> com.google.common.base.Optional
> at com.google.common.base.Optional.of(Optional.java:86)
> at
> org.apache.spark.api.java.JavaUtils$.optionToOptional(JavaUtils.scala:25)
> at
> org.apache.spark.api.java.JavaSparkContext.getSparkHome(JavaSparkContext.scala:542)
> {noformat}
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