Lavkesh Lahngir commented on YARN-4314:

 Basically for an application we can track the time taken between container 
request and allocation and add them to queue-metrics and application level 
Also we need to track the AM container wait time separately.. 
I Will update the details when I have figured out the exact code path. 
[~raju.bairishetti] : Would you like to comment something?

> Adding container wait time as a metric at queue level and application level.
> ----------------------------------------------------------------------------
>                 Key: YARN-4314
>                 URL: https://issues.apache.org/jira/browse/YARN-4314
>             Project: Hadoop YARN
>          Issue Type: New Feature
>            Reporter: Lavkesh Lahngir
>            Assignee: Lavkesh Lahngir
> There is a need for adding the container wait-time which can be tracked at 
> the queue and application level. 
> An application can have two kinds of wait times. One is AM wait time after 
> submission and another is total container wait time between AM asking for 
> containers and getting them. 

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