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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5836) Bug in S3N handling of directory markers using an object with a trailing "/" causes jobs to fail
Date Wed, 27 May 2009 09:42:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12713497#action_12713497
] 

Tom White commented on HADOOP-5836:
-----------------------------------

These changes look good. A few comments

* Have you run Jets3tNativeS3FileSystemContractTest? This isn't run by default since it needs
an S3 account to test with. This serves as a good regression test.
* There's a mixture of debug-level and info-level debugging here. How noisy is this in practice?
Shouldn't it be mainly debug, so folks can enable it when they hit problems?
* Some of the indentation looks wrong in the patch - e.g. in handleServiceException(S3ServiceException).
* The patch doesn't apply cleanly anymore and needs regenerating.

> Bug in S3N handling of directory markers using an object with a trailing "/" causes jobs
to fail
> ------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-5836
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5836
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: fs/s3
>    Affects Versions: 0.18.3
>            Reporter: Ian Nowland
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5836-0.patch
>
>
> Some tools which upload to S3 and use a object terminated with a "/" as a directory marker,
for instance "s3n://mybucket/mydir/". If asked to iterate that "directory" via listStatus(),
then the current code will return an empty file "", which the InputFormatter happily assigns
to a split, and which later causes a task to fail, and probably the job to fail. 

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