[jira] [Updated] (AMBARI-12698) Update the stack by stopping and starting services in an orchestrated fashion

["Alejandro Fernandez (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-12698?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alejandro Fernandez updated AMBARI-12698:
-----------------------------------------
    Attachment: AMBARI-12698_design_review.pdf
                AMBARI-12698_design_review.docx

> Update the stack by stopping and starting services in an orchestrated fashion
> -----------------------------------------------------------------------------
>
>                 Key: AMBARI-12698
>                 URL: https://issues.apache.org/jira/browse/AMBARI-12698
>             Project: Ambari
>          Issue Type: Epic
>          Components: ambari-server
>    Affects Versions: 2.2.0
>            Reporter: Alejandro Fernandez
>            Assignee: Alejandro Fernandez
>            Priority: Critical
>             Fix For: 2.2.0
>
>         Attachments: AMBARI-12698_design_review.docx, AMBARI-12698_design_review.pdf
>
>
> Ambari needs to provide an option to upgrade the stack that is much faster, by taking downtime. Instead of rolling restarts, this will stop all services, and start them one at a time, with all hosts starting in parallel/batches.
> Benefits:
> * Relaxes requirements since NameNode HA is not needed
> * Faster since,
> ** Can upgrade an entire component by parallelizing across hosts. E.g., all ZK servers at once
> ** Parallelize across components. E.g., Falcon Server and Storm Nimbus servers in parallel



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