[jira] [Created] (YARN-9721) An easy method to exclude a nodemanager from the yarn cluster cleanly

["Zac Zhou (JIRA)" <ji...@apache.org>]

Zac Zhou created YARN-9721:
------------------------------

             Summary: An easy method to exclude a nodemanager from the yarn cluster cleanly
                 Key: YARN-9721
                 URL: https://issues.apache.org/jira/browse/YARN-9721
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Zac Zhou
         Attachments: decommission nodes.png

If we want to take offline a nodemanager server, nodes.exclude-path
and "rmadmin -refreshNodes" command are used to decommission the server.
But this method cannot clean up the node clearly. Nodemanager servers are still in Decommissioned Nodes as the attachment shows.

[YARN-4311|https://issues.apache.org/jira/browse/YARN-4311] enable a removalTimer to clean up the untracked node.
But the logic of isUntrackedNode method is to restrict. If include-path is not used, no servers can meet the criteria. Using an include file would make a potential risk in maintenance.

If yarn cluster is installed on cloud, nodemanager servers are created and deleted frequently. We need a way to exclude a nodemanager from the yarn cluster cleanly. Otherwise, the map of rmContext.getInactiveRMNodes() would keep growing, which would cause a memory issue of RM.



--
This message was sent by Atlassian JIRA
(v7.6.14#76016)

---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: yarn-issues-help@hadoop.apache.org