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Date: Mon, 26 Jul 2010 19:11:18 -0400 (EDT)
From: "Doug Cutting (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-6870) Add FileSystem#listLocatedStatus to
 list a directory's content together with each file's block locations
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    [ https://issues.apache.org/jira/browse/HADOOP-6870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12892533#action_12892533 ] 

Doug Cutting commented on HADOOP-6870:
--------------------------------------

LocatedFileStatus() still ignores an exception.  Even if it should never be thrown, throwing a RuntimeException is probably better than failing silently.

> Add FileSystem#listLocatedStatus to list a directory's content together with each file's block locations
> --------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-6870
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6870
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs
>    Affects Versions: 0.22.0
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.22.0
>
>         Attachments: listFiles.patch, listFiles1.patch, listFiles2.patch
>
>
> This jira implements the new FileSystem API as proposed in HDFS-202. The new API aims to eliminate individual "getFileBlockLocations" calls to NN for each file in the input directory of a job. Instead, a file's block locations are returned together with FileStatus when listing a directory, thus improving getSplits performance.

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