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https://issues.apache.org/jira/browse/HADOOP-13508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15623108#comment-15623108
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Wei-Chiu Chuang commented on HADOOP-13508:
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Is it an incompatible change? I wonder if it make sense to backoprt to branch-2.
OIV ReverseXML tool fails to reconstruct a fsimage that has sticky bit because
of this bug.
> FsPermission string constructor does not recognize sticky bit
> -------------------------------------------------------------
>
> Key: HADOOP-13508
> URL: https://issues.apache.org/jira/browse/HADOOP-13508
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Atul Sikaria
> Assignee: Atul Sikaria
> Fix For: 3.0.0-alpha2
>
> Attachments: HADOOP-13508-1.patch, HADOOP-13508-2.patch,
> HADOOP-13508.003.patch, HADOOP-13508.004.patch, HADOOP-13508.005.patch,
> HADOOP-13508.006.patch
>
>
> FsPermissions's string constructor breaks on valid permission strings, like
> "1777".
> This is because FsPermission class naïvely uses UmaskParser to do it’s
> parsing of permissions: (from source code):
> public FsPermission(String mode) {
> this((new UmaskParser(mode)).getUMask());
> }
> The mode string UMask accepts is subtly different (esp wrt sticky bit), so
> parsing Umask is not the same as parsing FsPermission.
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