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https://issues.apache.org/jira/browse/HADOOP-5958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12768925#action_12768925
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Doug Cutting commented on HADOOP-5958:
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I'm not a big fan of interfaces, since they make it hard to evolve the API
compatibly. I also don't think we should encourage most code to specify the
implementation when there's a clearly preferred implementation. So, an
abstract base class with a factory method that most folks use?
> 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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