Spark SQL and DataFrame 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 INSERT...SELECT Operation
Multiple JDBC Clients Concurrently Connecting to JDBCServer
Optimizing Memory when Data Is Inserted into Dynamic Partitioned Tables
Optimizing Small Files
Optimizing the Aggregate Algorithms
Optimizing Datasource Tables
Merging CBO
Optimizing SQL Query of Data of Multiple Sources
SQL Optimization for Multi-level Nesting and Hybrid Join

Parent topic: Spark2x Performance Tuning