cloud-fan commented on a change in pull request #31905:
URL: https://github.com/apache/spark/pull/31905#discussion_r603380474
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File path: sql/core/src/main/scala/org/apache/spark/sql/SparkSession.scala
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@@ -683,6 +683,12 @@ class SparkSession private(
ret
}
+ def observation(expr: Column, exprs: Column*): Observation =
Review comment:
Yea this is arguable. Personally, I'd like to see a new API similar to
the existing `df.observe(...)`, but the new one here is very different:
```
val ob = spark.observe(...)
df.transform(ob.on).
```
Let's get more feedbacks. cc @srowen @HyukjinKwon @dongjoon-hyun @maropu
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