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https://issues.apache.org/jira/browse/SPARK-24421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16677280#comment-16677280
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Sean Owen commented on SPARK-24421:
-----------------------------------
BTW thanks for the tip [~akorzhuev] ; I checked and unfortunately
DirectByteBuffer in Java 9 holds an instance of jdk.internal.ref.Cleaner, not
java.lang.ref.Cleaner. The latter isn't available in Java 8 anyway. So we'd
have to hack this with reflection regardless.
> sun.misc.Unsafe in JDK9+
> ------------------------
>
> Key: SPARK-24421
> URL: https://issues.apache.org/jira/browse/SPARK-24421
> Project: Spark
> Issue Type: Sub-task
> Components: Build
> Affects Versions: 2.3.0
> Reporter: DB Tsai
> Priority: Major
>
> Many internal APIs such as unsafe are encapsulated in JDK9+, see
> http://openjdk.java.net/jeps/260 for detail.
> To use Unsafe, we need to add *jdk.unsupported* to our code’s module
> declaration:
> {code:java}
> module java9unsafe {
> requires jdk.unsupported;
> }
> {code}
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