andygrove commented on issue #2649:
URL: 
https://github.com/apache/datafusion-comet/issues/2649#issuecomment-3506837662

   > just FYI the workaround is
   > 
   > ```
   > CometConf.COMET_EXEC_SHUFFLE_ENABLED.key -> "false"
   > ```
   > 
   > This happens because in RangeRepartition on RowConverter, I'm digging into 
this real quick to see what is the correct behavior
   
   Here's what I know so far:
   
   In native execution we have always assumed UTC. When we read from Parquet, 
we convert to UTC.
   
   When creating arrow schema from Parquet schema we hard-coded UTC. I have a 
PR https://github.com/apache/datafusion-comet/pull/2734 to remove that hard 
coding and that is a partial fix.
   
   When native comet scan reads from JVM LocalTableScan it is not always UTC, 
so we have a mismatch there.


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