[jira] [Created] (FLINK-24150) Support to configure cpu resource request and limit in pod template

["Yang Wang (Jira)" <ji...@apache.org>]

Yang Wang created FLINK-24150:
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             Summary: Support to configure cpu resource request and limit in pod template
                 Key: FLINK-24150
                 URL: https://issues.apache.org/jira/browse/FLINK-24150
             Project: Flink
          Issue Type: New Feature
          Components: Deployment / Kubernetes
            Reporter: Yang Wang


Why Flink needs to overwrite memory resource defined in pod template?
The major reason is that Flink need to ensure the consistency between Flink configuration
(\{{taskmanager.memory.process.size}} , {{kubernetes.taskmanager.cpu}}) and pod template resource settings. Since users could specify the total process memory or detailed memory[2], Flink will calculate the pod resource internally.
 
For the CPU case the template’s requests/limits should have priority if they are specified. The factor could still be used if the template doesn’t specify anything. The logic could be something like this:
 # To choose CPU request
 # Read pod template first
 # If template doesn’t have anything, read from {{kubernetes.taskmanager.cpu}}
 # If configuration is not specified, fall back to default


 # To choose CPU limit
 # Read from template first
 # If template doesn’t have anything, apply factor to what was chosen in step 1, where the default factor is 1.



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