On the Spark status UI you can click Stages on the menu and see Active (and completed stages). For the active stage, you can see Succeeded/Total and a count of failed ones in paranthesis.
I'm looking for a way to go straight to the failed tasks and list the errors. Currently I must go into details on that stage, then scroll down to Tasks section. Change the number of records per page so I can see everything. and click Go. There is no way that I can just filter the ones with errors thanks jeff