With Amazon EMR release 6.1.0, Amazon EMR runtime for Apache Spark is now available for Spark 3.0.0. EMR runtime for Apache Spark is a performance-optimized runtime for Apache Spark that is 100% API compatible with open-source Apache Spark.
In our benchmark performance tests using TPC-DS benchmark queries at 3 TB scale, we found EMR runtime for Apache Spark 3.0 provides a 1.7 times performance improvement on average, and up to 8 times improved performance for individual queries over open-source Apache Spark 3.0.0. With Amazon EMR 6.1.0, you can now run your Apache Spark 3.0 applications faster and cheaper without requiring any changes to your applications.
Results observed using TPC-DS benchmarks
To evaluate the performance improvements, we used TPC-DS benchmark queries with 3 TB scale and ran them on a 6-node c4.8xlarge EMR cluster with data in Amazon Simple Storage Service (Amazon S3). We ran the tests with and without the EMR runtime for Apache Spark. The following two graphs compare the total aggregate runtime and geometric mean for all queries in the TPC-DS 3 TB query dataset between the Amazon EMR releases.
The following table shows the total runtime in seconds.
The following table shows the geometric mean of the runtime in seconds.
In our tests, all queries ran successfully on EMR clusters that used the EMR runtime for Apache Spark. However, when using Spark 3.0 without the EMR runtime, 34 out of the 104 benchmark queries failed due to SPARK-32663. To work around these issues, we disabled
spark.shuffle.readHostLocalDisk configuration. However, even after this change, queries 14a and 14b continued to fail. Therefore, we chose to exclude these queries from our benchmark comparison.
The per-query speedup on Amazon EMR 6.1 with and without EMR runtime is illustrated in the following chart. The horizontal axis shows each query in the TPC-DS 3 TB benchmark. The vertical axis shows the speedup of each query due to the EMR runtime. We found a 1.7 times performance improvement as measured by the geometric mean of the per-query speedups, with all queries showing a performance improvement with the EMR Runtime.
You can run your Apache Spark 3.0 workloads faster and cheaper without making any changes to your applications by using Amazon EMR 6.1. To keep up to date, subscribe to the Big Data blog’s RSS feed to learn about more great Apache Spark optimizations, configuration best practices, and tuning advice.
About the Authors
Al MS is a product manager for Amazon EMR at Amazon Web Services.
Peter Gvozdjak is a senior engineering manager for EMR at Amazon Web Services.