xinyiZzz opened a new pull request, #25912:
URL: https://github.com/apache/doris/pull/25912

   ## Proposed changes
   
   
   In the past, two conditions needed to be met when sampling a partitioned 
table: 1. Data is evenly distributed between partitions; 2. Data is evenly 
distributed between buckets. Finally, the number of sampled rows in each 
partition and each bucket is the same.
   
   Now, sampling will be proportional to the number of partitioned and bucketed 
rows.
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[[email protected]](mailto:[email protected]) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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