How many executor process does an application receives?

Hi, I am running a stand alone Spark cluster, 2 workers each has 2 cores. I submit one Spakr application to the cluster, and I monitor the execution process via UI ( both worker-ip:8081 and master-ip:4040) There I can see that the application is handled by many Executors, in my case one worker

Re: How many executor process does an application receives?

An application can have only one executor at each machine or container (YARN). How many thread that each executor have is determined by the parameter executor-cores. There are also other parameter setting method that you can specify total- executor-cores and each executor cores will be determined