kfaraz commented on PR #17653:
URL: https://github.com/apache/druid/pull/17653#issuecomment-2640158580

   >  I was also hoping to understand the pros and cons of having pending 
segments and segments being accessed by the same ReadWriteLock in the cache.
   
   There are certain transactions that modify both pending segments and regular 
segments.
   To maintain consistency (and also for general simplicity), it is best to 
have a single lock that restricts access to the entire cache.
   The locks are only held at datasource level and the cache operations are 
expected to be fast enough so that this won't be a concern.


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