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https://issues.apache.org/jira/browse/HADOOP-2227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12550849
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Amareshwari Sri Ramadasu commented on HADOOP-2227:
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In the attached patch, when one of the disks has enough space for a task, then
TaskTracker.enoughFreeSpace returns true. The patch also changes localizeJob,
localizeTask and localizeCache methods to use localDirAllocator.
> wrong usage of mapred.local.dir.minspacestart
> ----------------------------------------------
>
> Key: HADOOP-2227
> URL: https://issues.apache.org/jira/browse/HADOOP-2227
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.15.1
> Reporter: Christian Kunz
> Assignee: Amareshwari Sri Ramadasu
> Priority: Critical
> Fix For: 0.16.0
>
> Attachments: patch-2227.txt
>
>
> As I understand it, mapred.local.dir.minspacestart should be used to specify
> that a map or reduce task requires a minimum disk space to be executed. When
> several disks are available, and mapred.local.dir lists all of them, then the
> free space should be added up. But TaskTracker.enoughFreeSpace returns false
> whenever one of the disks listed in mapred.local.dir has less than the space
> specified by mapred.local.dir.minspacestart.
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