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https://issues.apache.org/jira/browse/HADOOP-10892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14085431#comment-14085431
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Chris Nauroth commented on HADOOP-10892:
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There are places where we have consciously chosen to use {{Unsafe}}, i.e.
unmapping a memory-mapped file without needing to code a JNI wrapper over
{{munmap}}. It would be legitimate to suppress these.
Unfortunately, I don't believe there is any way to do so. I once tried and
failed to suppress the warnings on {{Unsafe}}. According to this, it is by
design that you cannot suppress these warnings.
http://bugs.java.com/bugdatabase/view_bug.do?bug_id=6476630
bq. Sun does not support such API and the warning will not be suppressible.
Maybe we just need to close this as won't fix?
> Suppress 'proprietary API' warnings
> -----------------------------------
>
> Key: HADOOP-10892
> URL: https://issues.apache.org/jira/browse/HADOOP-10892
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Arpit Agarwal
>
> The 'proprietary API' warnings provide no useful information and clutter up
> the build output, hiding legitimate warnings in the noise.
> Most of the warnings appear to be about OutputFormat, XMLSerializer and
> Unsafe. I don't think these APIs are going away any time soon, and if they do
> we can deal with it when it happens.
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