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https://issues.apache.org/jira/browse/HADOOP-5700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12713798#action_12713798
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Raghu Angadi commented on HADOOP-5700:
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> I triggered it by calling namenode.getFileInfo() on a relative path from
> within my thrift contrib code (HADOOP-4707).
Thanks Todd. That implies user can trigger it. So namenode.getFileInfo(null)
might still trigger an NPE even after the patch.
Do you think NN should sanity check user input at the highest level (in
NameNode.java) and throw an IOException?
Or in this particular case, not having "/" at the beginning is like giving
random string for path.. which should trigger "FileNotFoundException" and not a
runtime exception IMO. But another IOException with helpful message is fine too.
> 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.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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