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