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https://issues.apache.org/jira/browse/ARROW-12747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17415522#comment-17415522
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Mark Diskin commented on ARROW-12747:
-------------------------------------

The next Java LTS (17) is now released when will this be supported? This will 
be the baseline for many frameworks to adopt the jakarta open source releases  
e.g. 
https://spring.io/blog/2021/09/02/a-java-17-and-jakarta-ee-9-baseline-for-spring-framework-6

https://www.oracle.com/news/announcement/oracle-releases-java-17-2021-09-14/

> 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: Bug
>          Components: Java
>    Affects Versions: 0.15.1
>            Reporter: Megan Knister
>            Priority: Major
>
> 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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