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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9415) Fix NullPointerException in getLinkTarget
Date Wed, 20 Mar 2013 17:29:19 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13607888#comment-13607888
] 

Konstantin Shvachko commented on HADOOP-9415:
---------------------------------------------

Both {{FileContext.getLinkTarget()}} and {{ClientProtocol.getLinkTarget()}} claim it should
throw "IOException - If the given path does not refer to a symlink". Not returning null as
in your patch.
Why don't we start committing obvious bugs rather than merging them into big jira.
                
> Fix NullPointerException in getLinkTarget
> -----------------------------------------
>
>                 Key: HADOOP-9415
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9415
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs
>    Affects Versions: 3.0.0
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>            Priority: Minor
>         Attachments: hadoop-9415-1.patch
>
>
> {{HdfsFileStatus#getLinkTarget}} can throw a NPE in {{DFSUtil#bytes2String}} if {{symlink}}
is null. Better to instead return null and propagate this to the client.

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