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

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.2.0
• Labels: pull-request-available
• Target Version/s: 3.2.0
• Assignee: Akira Ajisaka
• Reporter: Chris Hegarty
• Created: 02/Feb/16 18:40
• Updated: 18/Apr/22 05:32
• Resolved: 13/Sep/18 11:57

Description

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

Issue Links

• blocks: HBASE-24007 Get `-PrunLargeTests` passing on JDK11
• blocks: HIVE-17709 remove sun.misc.Cleaner references
• is a child of: HADOOP-16264 [JDK11] Track failing Hadoop unit tests
• is depended upon by: HADOOP-11124 Java 9 removes/hides Java internal classes
• is duplicated by: HADOOP-15365 cannot find symbol sun.misc.Cleaner
• relates to: HADOOP-18164 Backport HADOOP-12760 to 2.10
• relates to: LUCENE-6989 Implement MMapDirectory unmapping for coming Java 9 changes
• links to: GitHub Pull Request #2506
• links to: GitHub Pull Request #4080
• mentioned in: Page Loading...