andygrove opened a new issue, #5703:
URL: https://github.com/apache/datafusion-comet/issues/5703

   ### Describe the bug
   
   Two tests in `CometAggregateSuite` are disabled on the DataFusion 55 branch 
with only a prose TODO and no tracking issue:
   
   ```scala
   // TODO: To be addressed after DF 55 migration
   ignore("grouped aggregate metrics are forwarded without fabricating global 
metrics") {
   ...
   // TODO: To be addressed after DF 55 migration
   ignore("range sampling does not report grouped aggregate metrics") {
   ```
   
   They assert on `spill_count`, `spilled_bytes`, `spilled_rows` and 
`peak_mem_used`. `peak_mem_used` accounting changed in apache/datafusion#22710, 
which is what broke them.
   
   ### Steps to reproduce
   
   Un-`ignore` either test on the `df55` branch.
   
   ### Expected behavior
   
   Either the assertions are adapted to DataFusion 55's accounting, or the 
metric is reported the way the tests expect. Either way the skips should point 
at this issue rather than a prose TODO, which is easy to lose once the branch 
merges.
   
   ### Additional context
   
   @sunchao offered to take this as a follow-up after #5262 merges. Related: 
the `CometTPCHQuerySuite` off-heap bump tracked separately.
   


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