Django: Bilateral coflow scheduling with predictive concurrent connections

For data-parallel frameworks, their communication is highly structured. Coflow is a networking abstraction proposed for their all-or-nothing job-specific semantics. Minimizing coflow completion time (CCT) decreases the completion time of corresponding jobs. However, state-of-the-art coflow scheduling approaches suffer from several drawbacks. On the one hand, both sender-driven and receiver-driven scheduling approaches fail to achieve optimal especially when the bandwidth bottleneck exists. On the other hand, they fail to optimize the number of concurrent connections since the CCT can be prolonged due to too many or too few concurrent connections.