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Posted to yarn-issues@hadoop.apache.org by "Raju Bairishetti (JIRA)" <ji...@apache.org> on 2015/06/25 06:52:06 UTC
[jira] [Updated] (YARN-3644) Node manager shuts down if unable to
connect with RM
[ https://issues.apache.org/jira/browse/YARN-3644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Raju Bairishetti updated YARN-3644:
-----------------------------------
Attachment: YARN-3644.001.patch
Created a jira [YARN-3847|https://issues.apache.org/jira/browse/YARN-3847] for *refactoring full test class*
[~Naganarasimha] Fixed the couple of review comments. Is it fine to refactoring the test as part of [YARN-3847|https://issues.apache.org/jira/browse/YARN-3847] ?
> Node manager shuts down if unable to connect with RM
> ----------------------------------------------------
>
> Key: YARN-3644
> URL: https://issues.apache.org/jira/browse/YARN-3644
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Reporter: Srikanth Sundarrajan
> Assignee: Raju Bairishetti
> Attachments: YARN-3644.001.patch, YARN-3644.001.patch, YARN-3644.patch
>
>
> When NM is unable to connect to RM, NM shuts itself down.
> {code}
> } catch (ConnectException e) {
> //catch and throw the exception if tried MAX wait time to connect RM
> dispatcher.getEventHandler().handle(
> new NodeManagerEvent(NodeManagerEventType.SHUTDOWN));
> throw new YarnRuntimeException(e);
> {code}
> In large clusters, if RM is down for maintenance for longer period, all the NMs shuts themselves down, requiring additional work to bring up the NMs.
> Setting the yarn.resourcemanager.connect.wait-ms to -1 has other side effects, where non connection failures are being retried infinitely by all YarnClients (via RMProxy).
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