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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8349) Remove YARN registry entries when a service is killed by the RM
Date Fri, 01 Jun 2018 20:42:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16498543#comment-16498543
] 

Wangda Tan commented on YARN-8349:
----------------------------------

Thank [~billie.rinaldi] for the patch, +1. Will commit by today if no objections.

> Remove YARN registry entries when a service is killed by the RM
> ---------------------------------------------------------------
>
>                 Key: YARN-8349
>                 URL: https://issues.apache.org/jira/browse/YARN-8349
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: yarn-native-services
>    Affects Versions: 3.2.0, 3.1.1
>            Reporter: Shane Kumpf
>            Assignee: Billie Rinaldi
>            Priority: Major
>         Attachments: YARN-8349.1.patch, YARN-8349.2.patch, YARN-8349.3.patch, YARN-8349.4.patch
>
>
> As the title states, when a service is killed by the RM (for exceeding its lifetime for
example), the YARN registry entries should be cleaned up.
> Without cleanup, DNS can contain multiple hostnames for a single IP address in the case
where IPs are reused. This impacts reverse lookups, which breaks services, such as kerberos,
that depend on those lookups.



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