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Posted to common-issues@hadoop.apache.org by "Chris Hegarty (JIRA)" <ji...@apache.org> on 2016/02/02 19:40:39 UTC

[jira] [Created] (HADOOP-12760) sun.misc.Cleaner has moved to a new location in OpenJDK 9

Chris Hegarty created HADOOP-12760:
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             Summary: sun.misc.Cleaner has moved to a new location in OpenJDK 9
                 Key: HADOOP-12760
                 URL: https://issues.apache.org/jira/browse/HADOOP-12760
             Project: Hadoop Common
          Issue Type: Bug
            Reporter: Chris Hegarty
            Priority: Minor


This is a heads-up: there are upcoming changes in JDK 9 that will require, at least, a small update to org.apache.hadoop.crypto.CryptoStreamUtils & org.apache.hadoop.io.nativeio.NativeIO.

OpenJDK issue no. 8148117: "Move sun.misc.Cleaner to jdk.internal.ref" [1], will move the Cleaner class from sun.misc to jdk.internal.ref. There is ongoing discussion about the possibility of providing a public supported API, maybe in the JDK 9 timeframe, for releasing NIO direct buffer native memory, see the core-libs-dev mail thread [2]. At the very least CryptoStreamUtils & NativeIO [3] should be updated to have knowledge of the new location of the JDK Cleaner.


[1] https://bugs.openjdk.java.net/browse/JDK-8148117
[2] http://mail.openjdk.java.net/pipermail/core-libs-dev/2016-January/038243.html
[3] https://github.com/apache/hadoop/search?utf8=✓&q=sun.misc.Cleaner



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