nsnhuang opened a new pull request, #20655:
URL: https://github.com/apache/doris/pull/20655

   ## Proposed changes
   Issue Number: close #xxx
   
   <!--Describe your changes.-->
   add SCOPED_TIMER at the begin of select_node's open function
   
   ## Further comments
   when using profile text, i found select_node's total_time(active) is smaller 
than it's child.
   By looking at the code,i found  that total_time of select_node is not 
include the open phase.
   Based on the above description, I propose the PR. Looking for a response^_^
   
   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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