Github user wangyum commented on a diff in the pull request: https://github.com/apache/spark/pull/22513#discussion_r219388085 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/benchmark/FilterPushdownBenchmark.scala --- @@ -27,7 +27,7 @@ import org.apache.spark.sql.functions.monotonically_increasing_id import org.apache.spark.sql.internal.SQLConf import org.apache.spark.sql.internal.SQLConf.ParquetOutputTimestampType import org.apache.spark.sql.types.{ByteType, Decimal, DecimalType, TimestampType} -import org.apache.spark.util.{Benchmark, BenchmarkBase => FileBenchmarkBase, Utils} +import org.apache.spark.util.Utils /** * Benchmark to measure read performance with Filter pushdown. --- End diff -- How about change scala doc to below to fix **fails to generate documentation**? ```scala * To run this benchmark: * {{{ * 1. without sbt: bin/spark-submit --class <this class> <spark sql test jar> * 2. build/sbt "sql/test:runMain <this class>" * 3. generate result: SPARK_GENERATE_BENCHMARK_FILES=1 build/sbt "sql/test:runMain <this class>" * Results will be written to "benchmarks/FilterPushdownBenchmark-results.txt". * }}} ``` fails to generate documentation error message: ```java /home/jenkins/workspace/SparkPullRequestBuilder@2/target/javaunidoc/org/apache/spark/mllib/linalg/UDTSerializationBenchmark.html... [error] /home/jenkins/workspace/SparkPullRequestBuilder@2/mllib/target/java/org/apache/spark/mllib/linalg/UDTSerializationBenchmark.java:5: error: unknown tag: this [error] * 1. without sbt: bin/spark-submit --class <this class> <spark mllib test jar> [error] ^ [error] /home/jenkins/workspace/SparkPullRequestBuilder@2/mllib/target/java/org/apache/spark/mllib/linalg/UDTSerializationBenchmark.java:5: error: unknown tag: spark [error] * 1. without sbt: bin/spark-submit --class <this class> <spark mllib test jar> [error] ^ [error] /home/jenkins/workspace/SparkPullRequestBuilder@2/mllib/target/java/org/apache/spark/mllib/linalg/UDTSerializationBenchmark.java:6: error: unknown tag: this [error] * 2. build/sbt "mllib/test:runMain <this class>" [error] ^ [error] /home/jenkins/workspace/SparkPullRequestBuilder@2/mllib/target/java/org/apache/spark/mllib/linalg/UDTSerializationBenchmark.java:7: error: unknown tag: this [error] * 3. generate result: SPARK_GENERATE_BENCHMARK_FILES=1 build/sbt "mllib/test:runMain <this class>" [error] ```
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