Viraj Jasani created AMBARI-25244:
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Summary: Rolling Upgrade support for rack based hosts
Key: AMBARI-25244
URL: https://issues.apache.org/jira/browse/AMBARI-25244
Project: Ambari
Issue Type: Improvement
Components: ambari-server
Affects Versions: trunk, 2.7.4
Reporter: Viraj Jasani
Assignee: Viraj Jasani
Ambari managed Rolling Upgrade has batch size concept with which multiple hosts
are upgraded in parallel. e.g. slave/client components are restarted on
multiple hosts in parallel.
However, we should provide support for parallel hosts upgrade that exist on
single rack. If client provides location of rack to hosts mapping file location
as part of cluster-env property, we should read the mapping and proceed with
parallel Rolling Restart on multiple hosts on single rack.
This can significantly improve resiliency and availability as slave/client
components that don't belong to single rack won't be restarted in parallel.
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