voonhous commented on code in PR #19164:
URL: https://github.com/apache/hudi/pull/19164#discussion_r3878754626


##########
hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/util/CachingIterator.scala:
##########
@@ -26,6 +26,10 @@ package org.apache.hudi.util
  *
  * NOTE: [[hasNext]] and [[next]] are purposefully marked as final, requiring 
iteration
  *       semantic to be implemented t/h overriding of a single [[doHasNext]] 
method
+ *
+ * TODO: this Scala trait has no production users -- the reader path uses the 
Java

Review Comment:
   Restored the trait as on master in 9bcda4f57a50 (no TODO in the Scaladoc): 
this PR is test-only, so the removal is left to a separate cleanup. The body 
notes that its last in-repo user went with #17457.



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