Hello @Lokesh ,
Thanks for the question and using MS Q&A platform.
As we understand the ask here is that Scala notebooks would not benefit from high concurrency clusters ? please do let us know if its not accurate.
You understanding this is correct , Scala does not benefit from high concurrency clusters . This is called out here : https://learn.microsoft.com/en-us/azure/databricks/clusters/configure#--high-concurrency-clusters
The reason being that in the high concurrent mode the cluster needs to run the workload of different users , but Scala code will be executed inside the Spark JVM (per machine) that is shared between all users, so you can get access to everything that is inside JVM.
Please do let me if you have any queries.
Thanks
Himanshu
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