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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6262) HDFS doesn't raise FileNotFoundException if the source of a rename() is missing
Date Wed, 30 Nov 2016 11:47:59 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15708354#comment-15708354
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Steve Loughran commented on HDFS-6262:
--------------------------------------

I concur. the newer rename, which in FileSystem is marked as @Deprecated, does do the check
and has a more consistent model. We can undeprecate it (it was deprecated because it was "transitionary"
to FileContext), move code to it

> HDFS doesn't raise FileNotFoundException if the source of a rename() is missing
> -------------------------------------------------------------------------------
>
>                 Key: HDFS-6262
>                 URL: https://issues.apache.org/jira/browse/HDFS-6262
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.4.0
>            Reporter: Steve Loughran
>            Assignee: Akira Ajisaka
>              Labels: BB2015-05-TBR
>         Attachments: HDFS-6262.2.patch, HDFS-6262.patch
>
>
> HDFS's {{rename(src, dest)}} returns false if src does not exist -all the other filesystems
raise {{FileNotFoundException}}
> This behaviour is defined in {{FSDirectory.unprotectedRenameTo()}} -the attempt is logged,
but the operation then just returns false.
> I propose changing the behaviour of {{DistributedFileSystem}} to be the same as that
of the others -and of {{FileContext}}, which does reject renames with nonexistent sources



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