Whale is a novel RDMA-assisted DSPS with efficient one-to-many data partitioning. Whale explores a novel RDMA-assisted stream multicast mechanism and a new worker-oriented communication mechanism. We implement Whale on top of Apache Storm and evaluate it using experiments with large-scale datasets. The results show that Whale achieves 56.6x improvement of system throughput and 97% reduction of processing latency compared to existing designs. - View it on GitHub