Junping Du created HADOOP-12690:
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Summary: Consolidate access of sun.misc.Unsafe
Key: HADOOP-12690
URL: https://issues.apache.org/jira/browse/HADOOP-12690
Project: Hadoop Common
Issue Type: Bug
Reporter: Junping Du
Assignee: Junping Du
Per discussion in Hadoop-12630
(https://issues.apache.org/jira/browse/HADOOP-12630?focusedCommentId=15082142&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15082142),
we found the access of sun.misc.Unsafe could be problematic for some JVMs in
other platforms. Also, hints from other comments, it is better to consolidate
it as a helper/utility method to shared with several places
(FastByteComparisons, NativeIO, ShortCircuitShm).
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