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https://issues.apache.org/jira/browse/AURORA-1258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maxim Khutornenko updated AURORA-1258:
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Story Points: 8
> Improve procedure for adding instances to a job
> -----------------------------------------------
>
> Key: AURORA-1258
> URL: https://issues.apache.org/jira/browse/AURORA-1258
> Project: Aurora
> Issue Type: Story
> Components: Reliability, Usability
> Reporter: Joe Smith
> Assignee: Maxim Khutornenko
>
> The current process for adding instances to a job is highly manual, and
> potentially dangerous.
> 1. Take a config for a job with 10 instances, update it to 20 instances.
> 2. The batch size will be increased, and users will need to specify shards 10
> to 19.
> 3. After this update is complete, users will need to manually update shards
> 0-9 again.
> There may be other changes pulled in as part of this update other than just
> increasing the number of instances, which could further complicate things.
> One possible improvement would be to change the updater from
> 'under-provision' where it kills instances first, then schedules new
> instances, to an 'over-provision' where it adds on new instances, then
> backpedals and kills the old instances.
> Overall, a single command or process for a user to take an already-existing
> job and increase the number of instances would reduce overhead and
> fat-fingering.
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