Free Online Certification Courses – Learn Today. Lead Tomorrow. › Forums › Apache Flink › sum() function in AvgAnsTime program in SOA This topic has 0 replies, 1 voice, and was last updated 5 years, 5 months ago by DataFlair Team. Viewing 0 reply threads Author Posts October 10, 2018 at 4:06 pm #6593 DataFlair TeamSpectator I used sum(0) instead of reduce function in ‘Average time to receive correct answer’. But it was throwing an exception that it works only for tuples. Author Posts Viewing 0 reply threads You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Signup / Login with Google Log In