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Posted to yarn-issues@hadoop.apache.org by "Junping Du (JIRA)" <ji...@apache.org> on 2017/01/06 01:49:59 UTC
[jira] [Updated] (YARN-4041) Slow delegation token renewal can
severely prolong RM recovery
[ https://issues.apache.org/jira/browse/YARN-4041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Junping Du updated YARN-4041:
-----------------------------
Fix Version/s: 2.8.0
> Slow delegation token renewal can severely prolong RM recovery
> --------------------------------------------------------------
>
> Key: YARN-4041
> URL: https://issues.apache.org/jira/browse/YARN-4041
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.6.0
> Reporter: Jason Lowe
> Assignee: Sunil G
> Fix For: 2.8.0, 2.7.2, 3.0.0-alpha1
>
> Attachments: 0001-YARN-4041.patch, 0002-YARN-4041.patch, 0003-YARN-4041.patch, 0004-YARN-4041.patch, 0005-YARN-4041.patch
>
>
> When the RM does a work-preserving restart it synchronously tries to renew delegation tokens for every active application. If a token server happens to be down or is running slow and a lot of the active apps were using tokens from that server then it can have a huge impact on the time it takes the RM to process the restart.
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