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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10942) Globbing optimizations and regression fix
Date Tue, 12 Aug 2014 01:44:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14093634#comment-14093634
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Colin Patrick McCabe commented on HADOOP-10942:
-----------------------------------------------

I created HADOOP-10958 for the globber test rework (I think it's going to be a giant patch,
although simple in concept.).  I created HADOOP-10957 for the urgent globber bug, and posted
a small bugfix that we can easily backport.  Can you file a JIRA for the FileContext issue,
if there's not one out there already?  And perhaps one for any other miscellaneous optimizations
/ refactoring we should do in the globber.

> Globbing optimizations and regression fix
> -----------------------------------------
>
>                 Key: HADOOP-10942
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10942
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 3.0.0, 2.1.0-beta
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>         Attachments: HADOOP-10942.patch
>
>
> When globbing was commonized to support both filesystem and filecontext, it regressed
a fix that prevents an intermediate glob that matches a file from throwing a confusing permissions
exception.  The hdfs traverse check requires the exec bit which a file does not have.
> Additional optimizations to reduce rpcs actually increases them if directories contain
1 item.



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