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How do you inspect candidate logical plans of cost-based SQL optimizer in spark (scala)?

score 39 · Answer 1 · 2022-04-22 13:23:38

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How do you inspect candidate logical plans of cost-based SQL optimizer in spark (scala)?

39 views Asked by wpunter At 22 April 2022 at 13:23

score 3914 · Answer 2 · 2021-04-21 03:29:14

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TechQA.

List Question

How do you inspect candidate logical plans of cost-based SQL optimizer in spark (scala)?

What is the role of Catalyst optimizer and Project Tungsten

Does Spark SQL optimize lower() on both sides?

How to structure large queries in spark

Apache Spark What is the difference between requiredChildDistribution and outputPartitioning?

Dataframe API vs Spark.sql

How to create custom Spark-Native functions without forking/modifying Spark itself

Spark optimize "DataFrame.explain" / Catalyst

Query Cassandra from Spark using CassandraSQLContext

is it possible to avoid second exchange when spark joins two datasets using joinWith?

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