Jefffrey commented on code in PR #18662:
URL: https://github.com/apache/datafusion/pull/18662#discussion_r2525565642


##########
datafusion/spark/src/function/hash/crc32.rs:
##########
@@ -124,11 +113,12 @@ fn spark_crc32(args: &[ArrayRef]) -> Result<ArrayRef> {
             let input = as_binary_view_array(input)?;
             Ok(spark_crc32_impl(input.iter()))
         }
-        _ => {
-            exec_err!(
-                "Spark `crc32` function: argument must be binary or large 
binary, got {:?}",
-                input.data_type()
-            )
+        DataType::FixedSizeBinary(_) => {
+            let input = as_fixed_size_binary_array(input)?;
+            Ok(spark_crc32_impl(input.iter()))
+        }
+        dt => {
+            internal_err!("Unsupported data type for crc32: {dt}")

Review Comment:
   I switched them to `internal_err` as during normal execution these errors 
should never occur; the signature should guard against them for us, so only if 
something went wrong with the signature/coercion logic elsewhere in the engine 
would we run into these errors (hence considered an internal error)



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