morningman opened a new pull request, #14268:
URL: https://github.com/apache/doris/pull/14268

   # Proposed changes
   
   Issue Number: close #xxx
   
   ## Problem summary
   
   In previous implementation, when doing list partition prune, we need to 
generation `rangeToId`
   every time we doing prune.
   But `rangeToId` is actually a static data that should be 
create-once-use-every-where.
   
   So for hive partition, I created the `rangeToId` and all other necessary 
data structures for partition prunning
   in partition cache, so that we can use it directly.
   
   In my test, the cost of partition prune for 10000 partitions reduce from 8s 
-> 0.2s.
   
   ## Checklist(Required)
   
   1. Does it affect the original behavior: 
       - [ ] Yes
       - [ ] No
       - [ ] I don't know
   2. Has unit tests been added:
       - [ ] Yes
       - [ ] No
       - [ ] No Need
   3. Has document been added or modified:
       - [ ] Yes
       - [ ] No
       - [ ] No Need
   4. Does it need to update dependencies:
       - [ ] Yes
       - [ ] No
   5. Are there any changes that cannot be rolled back:
       - [ ] Yes (If Yes, please explain WHY)
       - [ ] No
   
   ## 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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