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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4502) WebHdfsFileSystem handling of ifile field breaks compatibility and breaks HttpFS
Date Fri, 15 Feb 2013 01:12:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13578866#comment-13578866
] 

Alejandro Abdelnur commented on HDFS-4502:
------------------------------------------

Brandon, updating the documentation of WebHDFS.apt.vm is missing. There it should be indicated
in section 'Status of a File/Directory' of the new field, in which version it has been introduced
and its optional nature.

Suresh,  WebHDFS REST API is HDFS independent of HDFS, the name is a bit unfortunate. We (Nicholas,
Sanjay and myself) spent a significant amount of time to ensure that WebHDFS and HTTPFS are
100% compatible. 
                
> WebHdfsFileSystem handling of ifile field breaks compatibility and breaks HttpFS
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-4502
>                 URL: https://issues.apache.org/jira/browse/HDFS-4502
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 3.0.0
>            Reporter: Alejandro Abdelnur
>            Assignee: Brandon Li
>            Priority: Blocker
>         Attachments: HDFS-4502.patch
>
>
> HDFS-4340 introduced a new field {{fileId}} in WebHDFS FileStatus JSON representation.
> There are a two issues with this:
> * This is changing the WebHDFS REST API, this has not been documented
> * WebHdfsFileSystem should not fail when that field is not present (This is the case
when using HttpFS against a FS implementation -other than HDFS- which does not handle fileId)

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