[GitHub] [incubator-pinot] npawar opened a new pull request #4159: Add multiple locks which can be obtained based on segment name in lookupOrCreateFSM

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npawar opened a new pull request #4159: Add multiple locks which can be obtained based on segment name in lookupOrCreateFSM
URL: https://github.com/apache/incubator-pinot/pull/4159
 
 
   Adding segment name based locks instead of synchronizing the method lookupOrCreateFSM. The latter prevents even other segments from entering the method and accessing their own fsm. A stall in a single call (could be on zk access, gc) can create a ripple effect delay in all segments waiting on that method

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