January 2019
Beginner to intermediate
154 pages
4h 31m
English
Content preview from Apache Spark Quick Start Guide
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Code generation
As discussed earlier in this chapter, Spark can generate bytecode for your queries on the fly. Spark compiles each query to its Java bytecode equivalent code when spark.sql.codegen is set to true. By default, this property is set as false. In case your queries are big, you can set this property to true to improve on performance.
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