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From "Jakob Homan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6796) FileStatus allows null srcPath but crashes if that's done
Date Wed, 02 Jun 2010 01:31:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12874362#action_12874362
] 

Jakob Homan commented on HADOOP-6796:
-------------------------------------

bq. So are you proposing to get rid of the FileStatus() constructor, and signal NPE when the
user forgets to specify the srcPath? 
FileStatus is a Writable and therefore requires a default constructor, unfortunately.  Were
one to start looking at the classes that implement Writable, I imagine quite a few would be
susceptible to this problem.  It's a limitation of Writable (and Java...)

> FileStatus allows null srcPath but crashes if that's done
> ---------------------------------------------------------
>
>                 Key: HADOOP-6796
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6796
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.22.0
>            Reporter: Rodrigo Schmidt
>            Assignee: Rodrigo Schmidt
>            Priority: Minor
>             Fix For: 0.22.0
>
>         Attachments: HADOOP-6796.patch
>
>
> FileStatus allows constructor invocation with a null srcPath but many methods like write,
readFields, compareTo, equals, and hashCode depend on this property.

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