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https://issues.apache.org/jira/browse/HDFS-6262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13976529#comment-13976529
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Steve Loughran commented on HDFS-6262:
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Nicholas -problem exists in trunk; the HADOOP-9361 tests show this, as does the
patch. Currently the namenode logs at warn and returns 0 if the source is
missing, everything else throws FileNotFoundException
> 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
> 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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