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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5700) INode.getPathComponents throws NPE when given a non-absolute path
Date Wed, 17 Jun 2009 13:32:08 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720662#action_12720662
] 

Steve Loughran commented on HADOOP-5700:
----------------------------------------

I've just marked HADOOP-6028 as a duplicate. What is interesting there is that you can trigger
the NPE by browsing to {{http://namenode/fileChecksum/*}} ; the end user gets to see some
error XML while the stack trace gets created server side. 

This adds a new functional test, incidentally, try to GET that URL on a live system.

> INode.getPathComponents throws NPE when given a non-absolute path
> -----------------------------------------------------------------
>
>                 Key: HADOOP-5700
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5700
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5700-v2.txt, HADOOP-5700.txt
>
>
> If you pass a path that doesn't start with '/' to INode.getPathComponents, it throws
a NullPointerException. Instead it should throw IllegalArgumentException to make it clear
that absolute paths are required in this code.
> The attached patch fixes this, clarifies, the javadoc, and adds a test case.

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