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Some facts about Apache Storm
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Each spout and bolt can have one or more tasks, each of which corresponds to a thread. | |
Each topology can run under one or more JVMs. For example, if the combined parallelism (number of tasks) of the topology is 300 and 50 | |
workers are allocated, then each worker will execute 6 tasks (as threads within the worker). Storm tries to spread the tasks evenly | |
across all the workers. | |
Refer to this [http://storm.apache.org/releases/1.0.1/Understanding-the-parallelism-of-a-Storm-topology.html] | |
also http://stackoverflow.com/questions/17257448/what-is-the-task-in-storm-parallelism |
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