Ming Ma created YARN-4619:
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Summary: Add support to scheduler load simulator to run NM and AM
simulation separately from the RM process
Key: YARN-4619
URL: https://issues.apache.org/jira/browse/YARN-4619
Project: Hadoop YARN
Issue Type: Improvement
Reporter: Ming Ma
Currently SLS run everything in one JVM. It has some limitations if we want to
use the tool to evaluate scheduler performance. For example, gc caused by the
NM and AM simulation allocation can impact the test; the simulation uses direct
method calls into RM without using RPC.
First we need to refactor SLS to use RPC calls instead of direct calls, Then we
can provide options to start SLS in different modes, such as RM only, NM+AM
simulation only. We can even consider running distributed NM+AM simulations on
different machines.
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