[jira] [Assigned] (SLIDER-1178) add a feature that perform rolling upgrade automatically

["Gour Saha (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SLIDER-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gour Saha reassigned SLIDER-1178:
---------------------------------

    Assignee: kyungwan nam

> add a feature that perform rolling upgrade automatically
> --------------------------------------------------------
>
>                 Key: SLIDER-1178
>                 URL: https://issues.apache.org/jira/browse/SLIDER-1178
>             Project: Slider
>          Issue Type: Improvement
>            Reporter: kyungwan nam
>            Assignee: kyungwan nam
>             Fix For: Slider 1.0.0
>
>         Attachments: SLIDER-1178_branch-0.81.1.patch
>
>
> currently, when we want to upgrade a slider app, each containers should be restarted manually.
> this makes upgrading very inconvenient.
> I propose the AutoRollingUpgrader.
> - the AutoRollingUpgrader is a thread running periodically.
> - if container’s appVersion is different from that Slider-AM know, the container will be restarted.
> - to avoid application down, container should be restarted one at a time.
> - configurations should be added as follows
>   *site.global.auto_rolling_upgrade_enabled*: if this is set to true, the AutoRollingUpgrader is enabled.
>   *site.global.auto_rolling_upgrade_interval*: the interval in milliseconds at which the AutoRollingUpgrader runs.
> upgrade scenario when the AutoRollingUpgrader is enabled
> 1. user write a new appConfig file including changed “site.global.app_version"
> 2. user execute "slider upgrade" command with new appConfig.
> 3. slider-AM is killed and new slider-AM is launched with new appConfig.
> 4. new Slider-AM reregister with previous containers.
> 5. containers that have old appVersion are restarted by the AutoRollingUpgrader.
> a user want to upgrade only need to do 1,2.



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