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Can Drill on YARN handle 20,000 JDBC connections?

Question asked by MilindTakawale on Sep 22, 2017
Latest reply on Sep 22, 2017 by Hao Zhu
We have Drill on YARN configured on our MapR cluster and we are using Drill's JDBC interface to fetch data from a DB Client.
To improve query performance I am using Connection Pooling, so that a new connection is not created for each query request.
If we have 1000 such DB clients, each maintaining a connection pool of 20 connections each, can a single Drill on YARN handle around 20,000 simultaneously open JDBC connections?
If yes, how can I do performance tuning considering the above deployment? Will "planner.width.max_per_node" help?