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https://issues.apache.org/jira/browse/SPARK-36704?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-36704:
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Assignee: Apache Spark (was: Sean R. Owen)
> InaccessibleObjectException in Java 9+ on startup
> -------------------------------------------------
>
> Key: SPARK-36704
> URL: https://issues.apache.org/jira/browse/SPARK-36704
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.2.0
> Reporter: Sean R. Owen
> Assignee: Apache Spark
> Priority: Major
>
> A user reported this error on startup, which must be Java9+-related given the
> Java-9+ exception:
> {code}
> Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make
> private java.nio.DirectByteBuffer(long,int) accessible: module java.base does
> not "opens java.nio" to unnamed module @71e9ddb4
> at
> java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
> at
> java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
> at
> java.base/java.lang.reflect.Constructor.checkCanSetAccessible(Constructor.java:188)
> at
> java.base/java.lang.reflect.Constructor.setAccessible(Constructor.java:181)
> at org.apache.spark.unsafe.Platform.<clinit>(Platform.java:56)
> {code}
> Code in this section tries to open up some access to DirectBuffer by
> reflection, which no longer works by default in Java 9+. We long ago tried to
> handle this by dealing with the exception and avoiding reflection where not
> possible. However this seems like a possible new way the same type of issue
> can manifest.
> We can shore up the code checking this to try to handle this apparent error
> path similarly.
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