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Upgrading Ambari on larger clusters


I noticed recently a caution in the Ambari best practices document regarding clusters with more than 400 hosts. Can anyone share what I should be concerned about as I plan an upgrade to HDP 2.6.1 for a cluster with about 500 hosts?


@Geoff Holmes

Based on my experience, they will do some check like checking Ambari Database dump, service checks, alerts, configurations etc., before up performing upgrade so that it will help in smooth upgrade process.