[GitHub] [pulsar] 315157973 opened a new pull request #8207: Remove unnecessary locks

[GitBox]

315157973 opened a new pull request #8207:
URL: https://github.com/apache/pulsar/pull/8207


   ### Motivation
   There are many unnecessary locks in MultiTopicsConsumerImpl, which affect 
performance.
   BlockingQueue is inherently thread-safe, and there is no need to lock in 
many places.
   
   ### Modifications
   Remove unnecessary locks
    
   ### Verifying this change
   Use the perf tool, 3 * 8-core 16G nodes,recording time is about 2 minutes
   
   before removing：
   Aggregated throughput stats --- 11715556 records received --- 68813.420 
msg/s --- 537.605 Mbit/s
   
   after removing：
   Aggregated throughput stats --- 25062077 records received --- 161656.814 
msg/s --- 1262.944 Mbit/s


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