[
https://issues.apache.org/jira/browse/YARN-2344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14523788#comment-14523788
]
Junping Du commented on YARN-2344:
----------------------------------
Assign to myself to drive it forward.
> ResourceManager should support maintenance model
> ------------------------------------------------
>
> Key: YARN-2344
> URL: https://issues.apache.org/jira/browse/YARN-2344
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: resourcemanager
> Reporter: Hemanth Yamijala
> Assignee: Junping Du
>
> We've seen scenarios when we have needed to stop the namenode for a
> maintenance activity. In such scenarios, if the jobtracker (JT) continues to
> run, jobs would fail due to initialization or task failures (due to DFS). We
> could restart the JT enabling job recovery, during such scenarios. But
> restart has proved to be a very intrusive activity, particularly if the JT is
> not at fault itself and does not require a restart. The ask is for a
> admin-controlled feature to pause the JT which would take it to a state
> somewhat analogous to the safe mode of DFS.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
