zhaohaidao opened a new pull request, #3568:
URL: https://github.com/apache/bookkeeper/pull/3568

   
   ### Motivation
   Rocksdb instance throws Checksum Mismatch exception frequently in high 
workload(2000MB/s with 3 bookies and 3 replica) with directio mode.
   I checked the release history of rocksdb and found that checksum mismatch 
bug maybe fixed after 7.4.0. The fix is followed
   * Fixed a bug in `WriteBatchInternal::Append()` where WAL termination point 
in write batch was not considered and the function appends an incorrect number 
of checksums.
   
   ### Changes
   
   Upgrade rocksdb version to 7.4.5 to avoid checksum mismatch error
   
   Master Issue: #3567
   


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