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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7418) support for multiple slashes in the path separator
Date Fri, 24 Jun 2011 23:32:47 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13054752#comment-13054752
] 

Aaron T. Myers commented on HADOOP-7418:
----------------------------------------

Hey Andrew, patch looks pretty good to me. One question:

>From manually inspecting the code, I suspect the {{Path}} class will still not correctly
handle the case of multiple trailing slashes. Would you mind adding a test case to test some
path with a silly number (> 5) of trailing slashes?

You might also consider running the full HDFS and MR test suites with this patch installed,
as those obviously exercise all of the {{Path}} code quite a bit. See the "Changes that span
projects" section of this page for instructions about how to get HDFS and MR to compile against
your patched Common: http://wiki.apache.org/hadoop/HowToContribute

> support for multiple slashes in the path separator
> --------------------------------------------------
>
>                 Key: HADOOP-7418
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7418
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.23.0
>         Environment: Linux running JDK 1.6
>            Reporter: Sudharsan Sampath
>            Assignee: Andrew Look
>            Priority: Minor
>              Labels: newbie
>             Fix For: 0.23.0
>
>         Attachments: HDFS-1460.txt, HDFS-1460.txt
>
>
> the parsing of the input path string to identify the uri authority conflicts with the
file system paths. For instance the following is a valid path in both the linux file system
and the hdfs.
> //user/directory1//directory2.
> While this works perfectly fine in the command line for manipulating hdfs, the same fails
when specified as the input path for a mapper class with the following expcetion.
> Exception in thread "main" java.net.UnknownHostException: unknown host: user
>         at org.apache.hadoop.ipc.Client$Connection.<init>(Client.java:195)
> as the org.apache.hadoop.fs.Path class assumes the string that follows the '//' to be
an uri authority

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