andygrove opened a new issue, #6803:
URL: https://github.com/apache/datafusion-comet/issues/6803

   Found while enabling `spark.comet.exec.localTableScan.enabled` by default in 
draft PR #6780 (Spark 4.1 SQL tests and `[scans]` job). Part of #4347.
   
   5 tests fail in the Spark 4.1 [scans] job because a LocalTableScan-sourced 
write is now fully native (CometIcebergWrite over CometLocalTableScan) instead 
of IcebergWriteExec. Tests: "registration tags a fall-back reason on the write 
exec", "SparkWrite reflection helpers all resolve...", "no fall-back reason is 
recorded when the iceberg write feature is disabled", "fall-back: BatchWrite 
that is not an Iceberg SparkWrite", "Compatible when every partition field is 
void...". Related to #6664. Once default-on, the explicit 
localTableScan.enabled in docs and Iceberg diffs becomes redundant.
   


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