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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