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