Spark SQL Performance Tuning

Optimizing the Spark SQL Join Operation
Improving Spark SQL Calculation Performance Under Data Skew
Optimizing Spark SQL Performance in the Small File Scenario
Optimizing the Spark INSERT SELECT Statement
Configuring Multiple Concurrent Clients to Connect to JDBCServer
Configuring the Default Number of Data Blocks Divided by SparkSQL
Optimizing Memory When Data Is Inserted into Spark Dynamic Partitioned Tables
Optimizing Small Files
Optimizing the Aggregate Algorithms
Optimizing Datasource Tables
Merging CBO
SQL Optimization for Multi-level Nesting and Hybrid Join

Parent topic: Using Spark/Spark2x

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