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From "Brandon Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5043) For HdfsFileStatus, set default value of childrenNum to -1 instead of 0 to avoid confusing applications
Date Wed, 31 Jul 2013 17:43:48 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13725478#comment-13725478
] 

Brandon Li commented on HDFS-5043:
----------------------------------

{quote}HDFS-4772 was committed to 2.1.0. I think this should also go to 2.1.0, otherwise,
it is an incompatible change.{quote}
I've merged the patch to branch-2. 
2.1.0 has been released. It is an incompatible release with previous ones, and in this case
this changes is compatible with 2.1.0.
                
> For HdfsFileStatus, set default value of childrenNum to -1 instead of 0 to avoid confusing
applications
> -------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5043
>                 URL: https://issues.apache.org/jira/browse/HDFS-5043
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Brandon Li
>            Assignee: Brandon Li
>             Fix For: 3.0.0, 2.3.0
>
>         Attachments: HDFS-5043.patch, HDFS-5043.patch.2
>
>
> Per discussion in HDFS-4772, default value 0 can confuse application since it can't tell
that childNum is not supported by the server or the directory has no child.
> Use -1 instead to avoid this confusion.

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