Document adaptive_parallelism_strategy #582
Description
Link to kernel PR: risingwavelabs/risingwave#20589
This PR adds behavior for jobs with adaptive parallelism.
When set to Full, the job will use all available parallelism;
When set to Bounded(n), the maximum parallelism is limited to n;
When set to Ratio(r), the actual available parallelism will be multiplied by r (rounded down);
The behavior of Auto is currently consistent with Full.
Keep in mind that all parallelism is still subject to the limits of max parallelism and resource groups.
Additionally, the command alter system set adaptive_parallelism_strategy can be used to modify this parameter, and it will update jobs in batches in the background.
Can check with the feature owner @shanicky on the details.