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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2644) NodeManager fails to create containers when NM_LOG_DIR is not explicitly set in the Configuration
Date Wed, 06 Jul 2011 02:10:17 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13060237#comment-13060237
] 

Aaron T. Myers commented on MAPREDUCE-2644:
-------------------------------------------

One option would be to change {{LocalDirAllocator}} to accept a default value for the config
key you pass in. Another (probably better) option would be to just add a default value to
the {{mapred-default.xml}} file, which gets loaded any time an MR config object is created.

> NodeManager fails to create containers when NM_LOG_DIR is not explicitly set in the Configuration
> -------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2644
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2644
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Josh Wills
>            Assignee: Josh Wills
>         Attachments: MAPREDUCE-2644.patch
>
>
> If the yarn configuration does not explicitly specify a value for the yarn.server.nodemanager.log.dir
property, container allocation will fail on the NodeManager w/an NPE when the LocalDirAllocator
goes to create the temp directory. In most of the code, we handle this by defaulting to /tmp/logs,
but we cannot do this in the LocalDirAllocator context, so we need to set the default value
explicitly in the Configuration.
> Marking this as major b/c it's annoying to bump into it when you're getting your first
MRv2 cluster up and running. :)

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