sna commented on YARN-2293:

Have you realized the target?

> Scoring for NMs to identify a better candidate to launch AMs
> ------------------------------------------------------------
>                 Key: YARN-2293
>                 URL: https://issues.apache.org/jira/browse/YARN-2293
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: nodemanager, resourcemanager
>            Reporter: Sunil G
>            Assignee: Sunil G
> Container exit status from NM is giving indications of reasons for its 
> failure. Some times, it may be because of container launching problems in NM. 
> In a heterogeneous cluster, some machines with weak hardware may cause more 
> failures. It will be better not to launch AMs there more often. Also I would 
> like to clear that container failures because of buggy job should not result 
> in decreasing score. 
> As mentioned earlier, based on exit status if a scoring mechanism is added 
> for NMs in RM, then NMs with better scores can be given for launching AMs. 
> Thoughts?

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