Github user HyukjinKwon commented on the issue: https://github.com/apache/spark/pull/19782 This is also partly for running Python coverage without extra code change. I know a hacky way to run this (see https://github.com/apache/spark/pull/19630#issuecomment-345490662 and https://github.com/apache/spark/pull/19630#issuecomment-345171997): Now, we can do, for example, as below: ``` pip install coverage # Build Spark (http://spark.apache.org/docs/latest/building-spark.html) rm python/lib/pyspark.zip rm -fr .coverage rm -fr coverage_html echo "spark.python.use.daemon false" >> conf/spark-defaults.conf echo " #!/usr/bin/env bash coverage run -p \$@ " > coverage_python chmod 755 coverage_python # Run actual Python tests PATH=`pwd`:$PATH PYSPARK_PYTHON=coverage_python SPARK_TESTING=1 bin/pyspark pyspark.sql.tests VectorizedUDFTests rm conf/spark-defaults.conf coverage combine coverage html -d coverage_html -i open coverage_html # Open up index.html in your browser. ```
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