hangc0276 opened a new pull request, #3653:
URL: https://github.com/apache/bookkeeper/pull/3653

   ### Motivation
   The entry log location index deletion is deleted in batches one by one 
currently, and it will have low performance. Refer to: 
https://github.com/apache/bookkeeper/pull/3646
   
   Matteo has introduced deleteRange API a few years ago, but rollback due to 
RocksDB delete ranges bug. https://github.com/apache/bookkeeper/pull/1620.  The 
RocksDB bug has been addressed since 5.18.0 
https://github.com/facebook/rocksdb/blob/main/HISTORY.md#5180-2018-11-30. We 
can bring the `deleteRange` API back to improve the entry log location deletion 
performance.
   
   ### Changes
   Bring `deleteRange` API back for entry log location deletion.


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