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https://issues.apache.org/jira/browse/YARN-8333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Yang updated YARN-8333:
----------------------------
Description:
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}
> 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
> Priority: Major
>
> 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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