hust-hhb opened a new pull request, #23681:
URL: https://github.com/apache/doris/pull/23681

   ## Proposed changes
   my test show that RowIdConversion memory takes up about 20% of memory using 
on compaction. So making RowIdConversion memory persist to local can make 
compaction use less memory. 
   
   Issue Number: close #xxx
   
   <!--Describe your changes.-->
   
   ## 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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