Mryange opened a new pull request, #18472:
URL: https://github.com/apache/doris/pull/18472

   # Proposed changes
   
   According to the test results, the time consumption ratio of murmurhash to 
crc32 is 12:5.
   
   
![ce877780764dfd57ca1734cce0afafd6](https://user-images.githubusercontent.com/59914473/230601409-5b90fb01-5379-483f-8bd0-073e9e39ee37.png)
   
   
   ## Problem summary
   
   When the be_exec_version is less than 2, murmurhash will still be used, 
otherwise crc32 will be used. When the be_exec_version is upgraded to 2, please 
remove.
   
   ## Checklist(Required)
   
   * [ ] Does it affect the original behavior
   * [ ] Has unit tests been added
   * [ ] Has document been added or modified
   * [ ] Does it need to update dependencies
   * [ ] Is this PR support rollback (If NO, please explain WHY)
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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