xinyiZzz opened a new pull request, #18010:
URL: https://github.com/apache/doris/pull/18010

   # Proposed changes
   
   Issue Number: close #xxx
   
   ## Problem summary
   
   #11740 , solved the problem that the query memory statistics are higher than 
the actual physical memory, because PODArray does not have memset 0 when 
allocating memory, and the query mem tracker is virtual memory.
   
   But in extreme cases, such as csv load, `PODArray` frequent `insert` will 
cause performance problems. So revert part of #11740 and part of #12820.
   
   The accuracy of the query mem tracker, there is currently no feedback, no 
further attention.
   
   ## 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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