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https://issues.apache.org/jira/browse/MAPREDUCE-1501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12836936#action_12836936
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Zheng Shao commented on MAPREDUCE-1501:
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Thanks for the feedback Ian.
I don't think FileSystem.listPath() returns "." or "..". If it does, I believe
the current code in trunk will also break. The new unit test will also fail if
that's the case.
> FileInputFormat to support multi-level/recursive directory listing
> ------------------------------------------------------------------
>
> Key: MAPREDUCE-1501
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1501
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Zheng Shao
> Assignee: Zheng Shao
> Attachments: MAPREDUCE-1501.1.branch-0.20.patch,
> MAPREDUCE-1501.1.trunk.patch
>
>
> As we have seen multiple times in the mailing list, users want to have the
> capability of getting all files out of a multi-level directory structure.
> 4/1/2008:
> http://mail-archives.apache.org/mod_mbox/hadoop-core-user/200804.mbox/%3ce75c02ef0804011433x144813e6x2450da7883de3...@mail.gmail.com%3e
> 2/3/2009:
> http://mail-archives.apache.org/mod_mbox/hadoop-core-user/200902.mbox/%3c7f80089c-3e7f-4330-90ba-6f1c5b0b0...@nist.gov%3e
> 6/2/2009:
> http://mail-archives.apache.org/mod_mbox/hadoop-common-user/200906.mbox/%3c4a258a16.8050...@darose.net%3e
> One solution that our users had is to write a new FileInputFormat, but that
> means all existing FileInputFormat subclasses need to be changed in order to
> support this feature.
> We can easily provide a JobConf option (which defaults to false) to
> {{FileInputFormat.listStatus(...)}} to recursively go into directory
> structure.
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