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From "Eugene Koontz (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8168) empty-string owners or groups causes {{MissingFormatWidthException}} in o.a.h.fs.shell.Ls.ProcessPath()
Date Thu, 22 Mar 2012 18:06:22 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13235818#comment-13235818
] 

Eugene Koontz commented on HADOOP-8168:
---------------------------------------

Hi Daryn, Your fix looks a bit cleaner than mine, thanks!
-Eugene
                
> empty-string owners or groups causes {{MissingFormatWidthException}} in o.a.h.fs.shell.Ls.ProcessPath()
> -------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8168
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8168
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.24.0, 0.23.1
>            Reporter: Eugene Koontz
>         Attachments: HADOOP-8168.patch
>
>
> In {{adjustColumnWidths()}}, we set the member variable {{lineFormat}}, which is used
by {{ProcessPath()}} to print directory entries. Owners and groups are formatted using the
formatting conversion {{%-Xs}}, where X is the max length of the owner or group. However,
when trying this with an S3 URL, I found that the owner and group were empty (""). This caused
X to be 0, which means that the formatting conversion is set to {{%-0s}}. This caused a {{MissingFormatWidthException}}
to be thrown when the formatting string was used in {{ProcessPath()}}. 
> Formatting conversions are described here: 
> http://docs.oracle.com/javase/1.6.0/docs/api/java/util/Formatter.html#intFlags
> The specific exception thrown (a subtype of {{IllegalFormatException}}) is described
here:
> http://docs.oracle.com/javase/1.6.0/docs/api/java/util/MissingFormatWidthException.html

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