srowen commented on issue #24991: SPARK-28188 Materialize Dataframe API URL: https://github.com/apache/spark/pull/24991#issuecomment-506999407 I don't think we should add this. It's already very common to `.count()` or `.mapPartitions` with a no-op to do this. I do think there are use cases for proactively materializing, but, it's overused too.
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