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Posted to mapreduce-issues@hadoop.apache.org by "Gera Shegalov (JIRA)" <ji...@apache.org> on 2014/11/19 03:59:34 UTC

[jira] [Commented] (MAPREDUCE-5911) Terasort TeraOutputFormat does not check for output directory existance

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14217324#comment-14217324 ] 

Gera Shegalov commented on MAPREDUCE-5911:
------------------------------------------

Hi [~ivanmi], could you review and potentially commit MAPREDUCE-4879?

> Terasort TeraOutputFormat does not check for output directory existance
> -----------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5911
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5911
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: examples
>            Reporter: Ivan Mitic
>            Assignee: Bruno P. Kinoshita
>            Priority: Minor
>         Attachments: HADOOP-5911.patch
>
>
> The enforcement that the directory must not yet exist is implemented in {{FileOutputFormat#checkOutputSpecs}} by throwing {{FileAlreadyExistsException}}.  However, terasort uses a specialized output format, {{TeraOutputFormat}}, which is a subclass of {{FileOutputFormat}}.  The subclass overrides {{checkOutputSpecs}}, but does not re-implement the existence check and throw {{FileAlreadyExistsException}}.



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