heyihong commented on code in PR #53801:
URL: https://github.com/apache/spark/pull/53801#discussion_r2696323277
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sql/api/src/main/scala/org/apache/spark/sql/Observation.scala:
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@@ -58,12 +57,15 @@ class Observation(val name: String) {
private val isRegistered = new AtomicBoolean()
- private val promise = Promise[Row]()
+ private val promise = Promise[() => Row]()
Review Comment:
Yes, that sounds good.
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