Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/22664#discussion_r224272542
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/benchmark/DataSourceReadBenchmark.scala
---
@@ -34,10 +34,15 @@ import org.apache.spark.sql.vectorized.ColumnVector
/**
* Benchmark to measure data source read performance.
- * To run this:
- * spark-submit --class <this class> <spark sql test jar>
+ * To run this benchmark:
+ * {{{
+ * 1. without sbt: bin/spark-submit --class <this class> --jars <spark
core test jar>,<spark catalyst test jar> <spark sql test jar>
--- End diff --
Could you run `dev/scalastyle` and fix this in your branch?
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