how to tune the parallelism hint in storm

Question

\"parallelism hint\" is used in storm to parallelise a running storm topology. I know there are concepts like worker process, executor and tasks. Would it make sense to make

Answer 1

How to find the perfect parallelism hint number? I would say your best bet is try different numbers to find your suitable configuration. Each topology is different.

For example, your topology might interacting with a REST API, RDBMS, Solr, ElasticSearch or whatever and one of those might be your bottle neck. If you increased the parallelism hint, you might bring one of them to its knees and start throwing exceptions or whatever.

Your best bet is try different configuration and tune to find your best parallelism hint.