Steve Loughran created YARN-1360:
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Summary: Rework Distributed Shell to be a better model of how
people should write YARN applications
Key: YARN-1360
URL: https://issues.apache.org/jira/browse/YARN-1360
Project: Hadoop YARN
Issue Type: Improvement
Components: applications/distributed-shell
Affects Versions: 2.2.0
Reporter: Steve Loughran
Distributed Shell works as an example, but it's not the right architecture for
something you'd want in production -instead its design runs a risk of setting a
bad example for others to follow.
Instead it should
* be decomposed into a set of services each with their own responsibilities
* split the 'model' of its cluster into its own classes, a model that can then
be unit tested outside of the AM
* factor out all container launching into its own service -and use a thread
pool to avoid scalability limits
* provide a demonstration (classic) RPC service to show how to implement this
* tests
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