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https://issues.apache.org/jira/browse/YARN-880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14523073#comment-14523073
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Junping Du commented on YARN-880:
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This sounds like a wrong configuration problem. If you have only one node, and
appmaster occupied some memory resource of NM, then you don't have enough
resource to run map or reduce task container. Will close it as not a problem.
> Configuring map/reduce memory equal to nodemanager's memory, hangs the job
> execution
> ------------------------------------------------------------------------------------
>
> Key: YARN-880
> URL: https://issues.apache.org/jira/browse/YARN-880
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.0.1-alpha
> Reporter: Nishan Shetty
> Assignee: Omkar Vinit Joshi
> Priority: Critical
>
> Scenario:
> =========
> Cluster is installed with 2 Nodemanagers
> Configuraiton:
> NM memory (yarn.nodemanager.resource.memory-mb): 8 gb
> map and reduce memory : 8 gb
> Appmaster memory: 2 gb
> If map task is reserved on the same nodemanager where appmaster of the same
> job is running then job execution hangs.
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