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https://issues.apache.org/jira/browse/ARROW-12747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17534383#comment-17534383
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David Dali Susanibar Arce commented on ARROW-12747:
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Hi [[email protected]] this PR
[https://github.com/apache/arrow/pull/12941] was merged and just tested master
branch with java version "16.0.2" and if finished without errors, I am going to
close this issue and please let us know if you find some problems.
> [Java] Arrow's use of Netty library causes UnsupportedOperationException with
> JDK16
> -----------------------------------------------------------------------------------
>
> Key: ARROW-12747
> URL: https://issues.apache.org/jira/browse/ARROW-12747
> Project: Apache Arrow
> Issue Type: Sub-task
> Components: Java
> Affects Versions: 0.15.1, 5.0.0
> Reporter: Megan Knister
> Assignee: David Dali Susanibar Arce
> Priority: Blocker
> Fix For: 9.0.0
>
>
> The Arrow vector library depends on netty, which throws the exception
> *java.lang.UnsupportedOperationException: sun.misc.Unsafe or
> java.nio.DirectByteBuffer.(long, int) not available.* In the documentation,
> [it's stated that
> s|https://github.com/apache/arrow/blob/master/java/README.md]etting
> "-Dio.netty.tryReflectionSetAccessible=true" fixes the issue. This is true
> with all java versions except with usage of the latest JDK16. The exception
> gets thrown regardless of this system property setting when using JDK16.
>
> Is there a fix for this?
> Thanks!
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