title: How does Apache flink distribute data among nodes?
body: <p>I have setup a 2 node standalone Apache Flink cluster. For small amount of data (70 MB), the parallelism of 2 takes more time (2 min 30 seconds ) to process where as the parallelism of 1 takes just 18 seconds. How is the overhead more for small amount of data and why is it insignificant in case of large amounts of data?.I want to know more details about the distribution of data in case of large and small data and characterize the performance. Thank you</p>