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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6569) FsShell#cat should avoid calling unecessary getFileStatus before opening a file to read
Date Tue, 06 Apr 2010 13:46:36 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12853946#action_12853946
] 

Hudson commented on HADOOP-6569:
--------------------------------

Integrated in Hadoop-Hdfs-trunk #275 (See [http://hudson.zones.apache.org/hudson/job/Hadoop-Hdfs-trunk/275/])
    

> FsShell#cat should avoid calling unecessary getFileStatus before opening a file to read
> ---------------------------------------------------------------------------------------
>
>                 Key: HADOOP-6569
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6569
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.22.0
>
>         Attachments: optimizeCat-yahoo.patch, optimizeCat-yahoo1.patch, optimizeCat-yahoo2.patch,
optimizeCat.patch, optimizeCat.patch
>
>
> Since FileSystem#open throws a FileNotFoundException when the file to be read does not
exist, there is no need to check if the file is a directory or not before open. In case of
HDFS, this could reduce one getFileInfo RPC to NameNode.

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