[jira] [Commented] (SOLR-11189) Provisioning actions for autoscaling

["Shalin Shekhar Mangar (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-11189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16113819#comment-16113819 ] 

Shalin Shekhar Mangar commented on SOLR-11189:
----------------------------------------------

Sounds cool!

We also need to ensure that the nodes provisioned or decommissioned by this action are not discovered again by other nodeLost or nodeAdded triggers.

> Provisioning actions for autoscaling
> ------------------------------------
>
>                 Key: SOLR-11189
>                 URL: https://issues.apache.org/jira/browse/SOLR-11189
>             Project: Solr
>          Issue Type: Sub-task
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: AutoScaling
>            Reporter: Andrzej Bialecki 
>             Fix For: master (8.0)
>
>
> Autoscaling should be able to provision new nodes when necessary, or decommission no longer needed nodes. Solr should support a few common platforms out of the box (eg. AWS and Azure) with an API for integration with other platforms.
> Auto-provisioning can already be implemented as a {{TriggerAction}}, however there are common non-trivial aspects that should be supported by the framework, such as:
> * authentication to cluster manager APIs
> * ability to consider cost vs. performance tradeoffs and constraints (avoiding over-provisioning and under-provisioning)
> * maintaining cluster stability (avoiding trashing) while reacting with small delay and lag. These aspects will likely require some form of feedback loop controller.



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