Github user maropu commented on a diff in the pull request: https://github.com/apache/spark/pull/21631#discussion_r197679873 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala --- @@ -1602,4 +1602,14 @@ class CSVSuite extends QueryTest with SharedSQLContext with SQLTestUtils with Te assert(testAppender2.events.asScala .exists(msg => msg.getRenderedMessage.contains("CSV header does not conform to the schema"))) } + + test("SPARK-24645 skip parsing when columnPruning enabled and partitions scanned only") { + withSQLConf(SQLConf.CSV_PARSER_COLUMN_PRUNING.key -> "true") { + withTempPath { path => + val dir = path.getAbsolutePath + spark.range(10).selectExpr("id % 2 AS p", "id").write.partitionBy("p").csv(dir) + spark.read.csv(dir).selectExpr("sum(p)").collect() --- End diff -- oh, I forgot to add `assert` here. I'll update soon.
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