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From "Jakob Homan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-895) FileSystem::ListStatus will now throw FileNotFoundException, MapRed needs updated
Date Mon, 24 Aug 2009 18:32:59 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jakob Homan updated MAPREDUCE-895:

    Release Note: The semantics for dealing with non-existent paths passed to FileSystem::listStatus()
were updated and solidified in HADOOP-6201 and HDFS-538.  Existing code within MapReduce that
relied on the previous behavior of some FileSystem implementations of returning null has been
updated to catch or propagate a FileNotFoundException, per the method's contract.

Adding release note.

> FileSystem::ListStatus will now throw FileNotFoundException, MapRed needs updated
> ---------------------------------------------------------------------------------
>                 Key: MAPREDUCE-895
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-895
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Jakob Homan
>            Assignee: Jakob Homan
>             Fix For: 0.21.0
>         Attachments: MAPREDUCE-895.patch
> HADOOP-6201 (and HDFS-538) determined the semantics of FileSystem::ListStatus is not
correct and that the actual file system class vary in their implemenations, with some throwing
an exception and some returning null.  Fixing this will require adjusting code that calls
this method. 

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