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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5958) Use JDK 1.6 File APIs in DF.java wherever possible
Date Thu, 22 Oct 2009 22:03:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12768931#action_12768931

Doug Cutting commented on HADOOP-5958:

> That means we'd need to put most of the current DF's logic into some other class that
extends Shell; maybe a private inner class?

Works for me.  Delegation.

> Use JDK 1.6 File APIs in DF.java wherever possible
> --------------------------------------------------
>                 Key: HADOOP-5958
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5958
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>            Reporter: Devaraj Das
>             Fix For: 0.21.0
> JDK 1.6 has File APIs like File.getFreeSpace() which should be used instead of spawning
a command process for getting the various disk/partition related attributes. This would avoid
spikes in memory consumption by tasks when things like LocalDirAllocator is used for creating
paths on the filesystem.

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