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does resource manager uses memory other than heap

does resource manager uses memory other than heap


I am aware of the fact that hadoop services runs on JVM but question came into my mind when I am trying to understand which set of master services I can co locate on the cluster. I just want to know does resource manager or any other hadoop application uses memory other than its heap size.

Lets say I have 16 GB ram and

defined 4GB heap size for RM.

and 4GB for NN1.

Will both of these services use more than 8 GB RAM or it will not cross 8GB threshold.

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