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https://issues.apache.org/jira/browse/HADOOP-7418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13054752#comment-13054752
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Aaron T. Myers commented on HADOOP-7418:
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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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