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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8906) paths with multiple globs are unreliable
Date Thu, 11 Oct 2012 15:51:04 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13474251#comment-13474251
] 

Jason Lowe commented on HADOOP-8906:
------------------------------------

The corner case is now handled, but the new tests added don't test for it.  There should be
a test for a non-globbed path for an existing file with the false filter, and all the false
filter tests check for either a globbed path or non-existent files.

I tried adding a test locally with the false filter for "/" and noticed that it didn't return
null.  Instead it returned "/" because the filter isn't applied in the special cases of "/"
and "", which seems wrong.  It turns out that the existing code also had this bug, so I suppose
it's at least consistent with the previous version's behavior.

                
> paths with multiple globs are unreliable
> ----------------------------------------
>
>                 Key: HADOOP-8906
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8906
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.23.0, 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>         Attachments: HADOOP-8906-branch_0.23.patch, HADOOP-8906.patch, HADOOP-8906.patch,
HADOOP-8906.patch, HADOOP-8906.patch, HADOOP-8906.patch
>
>
> Let's say we have have a structure of "$date/$user/stuff/file".  Multiple globs are unreliable
unless every directory in the structure exists.
> These work:
> date*/user
> date*/user/stuff
> date*/user/stuff/file
> These fail:
> date*/user/*
> date*/user/*/*
> date*/user/stu*
> date*/user/stu*/*
> date*/user/stu*/file
> date*/user/stuff/*
> date*/user/stuff/f*

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