Jason Lowe commented on YARN-4311:

bq. Could these be part of shutdown nodes or do we need a separate category for 
such nodes? Would just the count of such nodes suffice or do we want to view 
them while its within the grace period?

The intent is the list of nodes would be visible from the UI for some period of 
time, so they can see where a particular node went after the update.  I think 
they could be part of the shutdown category since they were told to shutdown 
and leave the cluster.

> Removing nodes from include and exclude lists will not remove them from 
> decommissioned nodes list
> -------------------------------------------------------------------------------------------------
>                 Key: YARN-4311
>                 URL: https://issues.apache.org/jira/browse/YARN-4311
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.6.1
>            Reporter: Kuhu Shukla
>            Assignee: Kuhu Shukla
>         Attachments: YARN-4311-v1.patch
> In order to fully forget about a node, removing the node from include and 
> exclude list is not sufficient. The RM lists it under Decomm-ed nodes. The 
> tricky part that [~jlowe] pointed out was the case when include lists are not 
> used, in that case we don't want the nodes to fall off if they are not active.

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