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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2013/06/18 16:19:20 UTC
[jira] [Commented] (HADOOP-9651) Filesystems to throw
FileAlreadyExistsException in createFile(path, overwrite=false) when the
file exists
[ https://issues.apache.org/jira/browse/HADOOP-9651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13686763#comment-13686763 ]
Steve Loughran commented on HADOOP-9651:
----------------------------------------
Here I propose
# saying MUST throw {{FileAlreadyExistsException}}
# fixing all the hadoop filesystems to do this where they do not today.
# making sure the FS tests check for this.
HDFS already has the correct behaviour, as do the blobstore(s).
> Filesystems to throw FileAlreadyExistsException in createFile(path, overwrite=false) when the file exists
> ---------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-9651
> URL: https://issues.apache.org/jira/browse/HADOOP-9651
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs
> Affects Versions: 2.1.0-beta
> Reporter: Steve Loughran
> Priority: Minor
>
> While HDFS and other filesystems throw a {{FileAlreadyExistsException}} if you try to create a file that exists and you have set {{overwrite=false}}, {{RawLocalFileSystem}} throws a plain {{IOException}}. This makes it impossible to distinguish a create operation failing from a fixable problem (the file is there) and something more fundamental.
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