Option C is correct because you can diagnose performance issues related to predicate push-down by examining the Physical Plan in the Query Detail screen of the Spark UI. Predicate push-down is a feature where filtering conditions (predicates) are applied as early as possible, typically in the data scan operation, to reduce the amount of data being read. If predicate push-down is not happening, the physical plan will show that the filter operation is being applied after the data is read, leading to inefficient queries.
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lakime
1 month, 3 weeks agobenni_ale
4 months, 4 weeks ago