Omkar Vinit Joshi created YARN-977:
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Summary: Interface for users/AM to know actual usage by the
container
Key: YARN-977
URL: https://issues.apache.org/jira/browse/YARN-977
Project: Hadoop YARN
Issue Type: Improvement
Reporter: Omkar Vinit Joshi
Today we allocate resource (memory and cpu) and node manager starts the
container with requested resource [I am assuming they are using cgroups]. But
there is definitely a possibility of users requesting more than what they
actually may need during the execution of their container/job-task. If we add a
way for users/AM to know the actual usage of the requested/completed container
then they may optimize it for next run..
This will be helpful for AM to optimize cpu/memory resource requests by
querying NM/RM to know avg/max cpu/memory usage of the container or may be
containers belonging to application.
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