maropu commented on a change in pull request #26301: [SPARK-29644] [SQL]
Corrected ShortType and ByteType mapping to SmallInt and TinyInt in JDBCUtils
URL: https://github.com/apache/spark/pull/26301#discussion_r345552781
##########
File path:
external/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/MsSqlServerIntegrationSuite.scala
##########
@@ -202,4 +202,46 @@ class MsSqlServerIntegrationSuite extends
DockerJDBCIntegrationSuite {
df2.write.jdbc(jdbcUrl, "datescopy", new Properties)
df3.write.jdbc(jdbcUrl, "stringscopy", new Properties)
}
+
+ test("SPARK-29644: Write tables with ShortType") {
+ import testImplicits._
+ val df = Seq(-32768.toShort, 0.toShort, 1.toShort, 38.toShort,
32768.toShort).toDF("a")
+ val tablename = "shorttable"
+ df.write
+ .format("jdbc")
+ .mode("overwrite")
+ .option("url", jdbcUrl)
+ .option("dbtable", tablename)
+ .save()
+ val df2 = spark.read
+ .format("jdbc")
+ .option("url", jdbcUrl)
+ .option("dbtable", tablename)
+ .load()
+ assert(df.count == df2.count)
+ val rows = df2.collect()
+ val colType = rows(0).toSeq.map(x => x.getClass.toString)
+ assert(colType(0) == "class java.lang.Short")
+ }
+
+ test("SPARK-29644: Write tables with ByteType") {
Review comment:
But, very verbose. So, can we share this test by making a base abstract test
class?
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