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https://issues.apache.org/jira/browse/HADOOP-9232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13588829#comment-13588829
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Arpit Agarwal commented on HADOOP-9232:
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Hi Ivan. The branch-trunk-win code base already uses conditional compilation to
separate Unix/Windows implementations (see NativeIO.c). We should probably be
consistent and keep the implementation in a single file. It also resolves the
naming problem for now.
If we wish to rename JniBasedUnixGroupsMapping - which would be nice - we can
file a separate Jira.
> JniBasedUnixGroupsMappingWithFallback fails on Windows with
> UnsatisfiedLinkError
> --------------------------------------------------------------------------------
>
> Key: HADOOP-9232
> URL: https://issues.apache.org/jira/browse/HADOOP-9232
> Project: Hadoop Common
> Issue Type: Bug
> Components: native, security
> Affects Versions: trunk-win
> Reporter: Chris Nauroth
> Assignee: Ivan Mitic
> Attachments: HADOOP-9232.branch-trunk-win.jnigroups.2.patch,
> HADOOP-9232.branch-trunk-win.jnigroups.3.patch,
> HADOOP-9232.branch-trunk-win.jnigroups.patch
>
>
> {{JniBasedUnixGroupsMapping}} calls native code which isn't implemented
> properly for Windows, causing {{UnsatisfiedLinkError}}. The fallback logic
> in {{JniBasedUnixGroupsMappingWithFallback}} works by checking if the native
> code is loaded during startup. In this case, hadoop.dll is present and
> loaded, but it doesn't contain the right code. There will be no attempt to
> fallback to {{ShellBasedUnixGroupsMapping}}.
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