Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/3827#discussion_r22648661
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala
---
@@ -195,4 +196,19 @@ class SQLQuerySuite extends QueryTest {
checkAnswer(sql("SELECT sum( distinct key) FROM src group by key order
by key"),
sql("SELECT distinct key FROM src order by key").collect().toSeq)
}
+
+ test("SPARK-4963 SchemaRDD sample on mutable row return wrong result") {
+ sql("CREATE TABLE IF NOT EXISTS src (key INT, value STRING)")
+ val location =
+ Utils.getSparkClassLoader.getResource("data/files/kv1.txt").getFile()
+ sql(s"LOAD DATA LOCAL INPATH '$location' INTO TABLE src")
+ sql("SELECT * FROM src WHERE key % 2 = 0")
+ .sample(withReplacement = false, fraction = 0.3)
+ .registerTempTable("sampled")
+ (1 to 10).foreach{ i =>
--- End diff --
Nit: space before `{`.
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