Differences in architecture
The basic architecture of task execution is similar in Storm and Flink. The main difference between the two systems is that Workers and Executors are responsible for executing the tasks in Storm, while in Flink the execution is done by only the Task Managers. The Task Managers also manage the state backend, which is a durable storage for storing states.
Flink has a simpler architecture compared to Storm as the Task Managers fulfill the jobs of Workers and Executors. The process of task execution is similar: a Process Controller/Job Manager on a master node starts a worker node. On a worker node the Workers and Executors in Storm, Task Managers in Flink are responsible for running the Tasks. As the Executor, the Task Manager can also run more than one tasks at the same time. The resource management for the tasks are completed by the Process Controller in Storm and by the Job manager in Flink.
