We are running Flink 1.17 and have below configuration

taskmanager.memory.process.size: 1536m
  taskManager:
    resource:
      memory: 2048m

We expected the taskmanager pod to be created with 2048MB memory and only 1536MB to be allocated to “Total Process Memory”. But the job started with 2048m “Total Process Memory”. It seems

taskmanager.memory.process.size

setting was ignored. We would like to start have Flink’s Total Process Memory lower than pod’s memory limits. Can someone please help us with it ?

The tm.resource.memory simply sets the process size so it is naturally overriten. That is by default both the memory request and limit in the same number

Thanks for the suggestion. Also do we have any way to set the “total process memory” set by flink to be lower than pod’s requested memory ?

I don’t think so.

This is how memory utilisation of task manager pod looks like, it stays above the requested memory for all the time. So we were wondering if we can configure taskmanager memory to stay under requests for normal operations