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https://issues.apache.org/jira/browse/HDFS-4874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daryn Sharp resolved HDFS-4874.
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Resolution: Not A Problem
Hadoop Flags: Incompatible change
I fully agree with Suresh. An overwrite is semantically a delete & create.
Since delete isn't influenced by a lease, neither should an overwrite. Having
a lease prevent overwrite/delete implies the lease somewhat extends to the
directory contents (delete is a directory level operation) which doesn't make
since a file lease is a file level lock.
> create with OVERWRITE deletes existing file without checking the lease:
> feature or a bug.
> -----------------------------------------------------------------------------------------
>
> Key: HDFS-4874
> URL: https://issues.apache.org/jira/browse/HDFS-4874
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.0.4-alpha
> Reporter: Konstantin Shvachko
>
> create with OVERWRITE flag will remove a file under construction even if the
> issuing client does not hold a lease on the file.
> It could be a bug or the feature that applications rely upon.
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