voonhous commented on code in PR #18923:
URL: https://github.com/apache/hudi/pull/18923#discussion_r3854359473


##########
hudi-client/hudi-spark-client/src/main/scala/org/apache/hudi/SparkFileFormatInternalRowReaderContext.scala:
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@@ -86,6 +87,14 @@ class 
SparkFileFormatInternalRowReaderContext(baseFileReader: SparkColumnarFileR
 
   // For each field of `target`, replace its dataType with the matching 
field's projected
   // variant struct from `source` (when present). Non-matching fields pass 
through.
+  //

Review Comment:
   Moved the rationale onto the `sparkRequiredSchema` constructor parameter doc 
(the first place a reader meets the field); the comment above 
`overlayVariantProjections` now just points there.



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