Hi @bkosaraju, Thanks a lot for help. I have checked points you suggested. Unfortunately it didn't help as number of driver cores is still reported to be 0. Is my expectation right that there should be exact number of cores as provided in driver.cores property? I am sure that dynamic allocation is on, as I can see executors removed during application runtime. I attached a list of spark properties for ma application taken from Spark UI. spark-properties.txt ... View more