[jira] [Created] (YARN-160) nodemanagers should obtain cpu/memory values from underlying OS

["Alejandro Abdelnur (JIRA)" <ji...@apache.org>]

Alejandro Abdelnur created YARN-160:
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             Summary: nodemanagers should obtain cpu/memory values from underlying OS
                 Key: YARN-160
                 URL: https://issues.apache.org/jira/browse/YARN-160
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: nodemanager
    Affects Versions: 2.0.3-alpha
            Reporter: Alejandro Abdelnur
            Assignee: Alejandro Abdelnur
             Fix For: 2.0.3-alpha


As mentioned in YARN-2

*NM memory and CPU configs*

Currently these values are coming from the config of the NM, we should be able to obtain those values from the OS (ie, in the case of Linux from /proc/meminfo & /proc/cpuinfo). As this is highly OS dependent we should have an interface that obtains this information. In addition implementations of this interface should be able to specify a mem/cpu offset (amount of mem/cpu not to be avail as YARN resource), this would allow to reserve mem/cpu for the OS and other services outside of YARN containers.


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