zhoujinsong commented on PR #4087:
URL: https://github.com/apache/amoro/pull/4087#issuecomment-4023410258

   The new `min-parallelism` property should be documented in the optimizer 
group properties table at `docs/admin-guides/managing-optimizers.md`, under the 
`## Optimizer group` section (around the existing properties table in `### Add 
optimizer group`).
   
   Suggested addition to the properties table:
   
   | Property | Container type | Required | Default | Description |
   |---|---|---|---|---|
   | min-parallelism | All | No | 0 | The minimum total parallelism (CPU cores) 
that the optimizer group should maintain. When the current total cores of all 
running optimizers fall below this value, `OptimizerGroupKeeper` will 
automatically scale out new optimizers. Set to `0` to disable auto-scaling. |
   
   Also worth noting that the AMS-level configs 
`optimizer-group.min-parallelism-check-interval` and 
`optimizer-group.max-keeping-attempts` (already added to 
`docs/configuration/ams-config.md`) control the behavior of this auto-scaling 
mechanism.


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