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https://issues.apache.org/jira/browse/HADOOP-9597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14051361#comment-14051361
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Steve Loughran commented on HADOOP-9597:
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It's {{FileNotFoundException()}}; the parent JIRA makes sure it is this in all
filesystems that it has coverage for. Marking as done
> FileSystem open() API is not clear if FileNotFoundException is throw when the
> path does not exist
> -------------------------------------------------------------------------------------------------
>
> Key: HADOOP-9597
> URL: https://issues.apache.org/jira/browse/HADOOP-9597
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: documentation, fs
> Affects Versions: 2.0.4-alpha
> Reporter: Jerry He
> Priority: Minor
> Fix For: 2.5.0
>
>
> The current FileSystem open() method throws a generic IOException in its API
> specification.
> Some FileSystem implementations (DFS, RawLocalFileSystem ...) throws more
> specific FileNotFoundException if the path does not exist. Some throws
> IOException only (FTPFileSystem, HftpFileSystem ...).
> If we have a new FileSystem implementation, what should we follow exactly for
> open()?
> What should the application expect in this case.
>
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