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https://issues.apache.org/jira/browse/HADOOP-11127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16770157#comment-16770157
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john lilley commented on HADOOP-11127:
--------------------------------------
It appears that winutils.exe could be replaced by 100% java using the ACLS
interface:
[https://docs.oracle.com/javase/7/docs/api/java/nio/file/attribute/AclFileAttributeView.html]
[https://stackoverflow.com/questions/664432/how-do-i-programmatically-change-file-permissions]
But I have not done the work to understand exactly how this would map. The
outright elimination of winutils.exe would be a good thing.
> Improve versioning and compatibility support in native library for downstream
> hadoop-common users.
> --------------------------------------------------------------------------------------------------
>
> Key: HADOOP-11127
> URL: https://issues.apache.org/jira/browse/HADOOP-11127
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: native
> Reporter: Chris Nauroth
> Assignee: Alan Burlison
> Priority: Major
> Attachments: HADOOP-11064.003.patch, proposal.01.txt
>
>
> There is no compatibility policy enforced on the JNI function signatures
> implemented in the native library. This library typically is deployed to all
> nodes in a cluster, built from a specific source code version. However,
> downstream applications that want to run in that cluster might choose to
> bundle a hadoop-common jar at a different version. Since there is no
> compatibility policy, this can cause link errors at runtime when the native
> function signatures expected by hadoop-common.jar do not exist in
> libhadoop.so/hadoop.dll.
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