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https://issues.apache.org/jira/browse/FLINK-36940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rui Fan updated FLINK-36940:
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Component/s: Autoscaler
> Why does autoscaler Math.round the TargetProcessingCapacity
> -----------------------------------------------------------
>
> Key: FLINK-36940
> URL: https://issues.apache.org/jira/browse/FLINK-36940
> Project: Flink
> Issue Type: Improvement
> Components: Autoscaler
> Reporter: Rui Fan
> Priority: Major
>
> AutoScalerUtils#getTargetProcessingCapacity calls
> Math.round(lagCatchupTargetRate + restartCatchupRate +
> inputTargetAtUtilization);
>
> The return type is double, I don't know why need Math.round here.
>
> I write some end to end tests for autoscaler, and the recommended parallelism
> is unexpected. After analysis, I found Math.round is the root cause.
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