andygrove opened a new pull request, #1111:
URL: https://github.com/apache/datafusion-comet/pull/1111

   ## Which issue does this PR close?
   
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   Closes https://github.com/apache/datafusion-comet/issues/1109
   
   ## Rationale for this change
   
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    Why are you proposing this change? If this is already explained clearly in 
the issue then this section is not needed.
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   We currently drop some native metrics due to a design flaw in the current 
metrics code where we assume that the native plan is a 1:1 mapping with the 
Spark plan, which is often not true. See the issue for more details.
   
   ## What changes are included in this PR?
   
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   There is no need to duplicate the description in the issue here but it is 
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   The native planner now builds a tree of `SparkPlan` that is a 1:1 mapping 
with the original Spark plan. Each `SparkPlan` can reference multiple native 
plans that should be used for metrics collection.
   
   ## How are these changes tested?
   
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   Existing tests so far, but I should probably add some new tests.
   


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