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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-8333) Load balance YARN services using RegistryDNS multiple A records
Date Thu, 24 May 2018 16:19:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-8333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Yang updated YARN-8333:
----------------------------
    Attachment: YARN-8333.002.patch

> Load balance YARN services using RegistryDNS multiple A records
> ---------------------------------------------------------------
>
>                 Key: YARN-8333
>                 URL: https://issues.apache.org/jira/browse/YARN-8333
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: yarn-native-services
>    Affects Versions: 3.1.0
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>            Priority: Major
>         Attachments: YARN-8333.001.patch, YARN-8333.002.patch
>
>
> For scaling stateless containers, it would be great to support DNS round robin for fault
tolerance and load balancing.  The current DNS record format for RegistryDNS is [container-instance].[application-name].[username].[domain].
 For example:
> {code}
> appcatalog-0.appname.hbase.ycluster. IN A 123.123.123.120
> appcatalog-1.appname.hbase.ycluster. IN A 123.123.123.121
> appcatalog-2.appname.hbase.ycluster. IN A 123.123.123.122
> appcatalog-3.appname.hbase.ycluster. IN A 123.123.123.123
> {code}
> It would be nice to add multi-A record that contains all IP addresses of the same component
in addition to the instance based records.  For example:
> {code}
> appcatalog.appname.hbase.ycluster. IN A 123.123.123.120
> appcatalog.appname.hbase.ycluster. IN A 123.123.123.121
> appcatalog.appname.hbase.ycluster. IN A 123.123.123.122
> appcatalog.appname.hbase.ycluster. IN A 123.123.123.123
> {code}



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