huaxingao commented on a change in pull request #35283:
URL: https://github.com/apache/spark/pull/35283#discussion_r791273969
##########
File path:
external/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/DB2IntegrationSuite.scala
##########
@@ -198,4 +198,26 @@ class DB2IntegrationSuite extends
DockerJDBCIntegrationSuite {
""".stripMargin.replaceAll("\n", " "))
assert(sql("select x, y from queryOption").collect.toSet == expectedResult)
}
+
+ test("SPARK-30062") {
+ val expectedResult = Set(
+ (42, "fred"),
+ (17, "dave")
+ ).map { case (x, y) =>
+ Row(Integer.valueOf(x), String.valueOf(y))
+ }
+ val df = sqlContext.read.jdbc(jdbcUrl, "tbl", new Properties).cache
Review comment:
nit: I think we don't have to cache it.
##########
File path:
external/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/DB2IntegrationSuite.scala
##########
@@ -198,4 +198,26 @@ class DB2IntegrationSuite extends
DockerJDBCIntegrationSuite {
""".stripMargin.replaceAll("\n", " "))
assert(sql("select x, y from queryOption").collect.toSet == expectedResult)
}
+
+ test("SPARK-30062") {
+ val expectedResult = Set(
+ (42, "fred"),
+ (17, "dave")
+ ).map { case (x, y) =>
+ Row(Integer.valueOf(x), String.valueOf(y))
+ }
+ val df = sqlContext.read.jdbc(jdbcUrl, "tbl", new Properties).cache
+ df.write.mode(SaveMode.Append)
+ .jdbc(jdbcUrl, "tblcopy", new Properties)
+ df.write.mode(SaveMode.Append)
+ .jdbc(jdbcUrl, "tblcopy", new Properties)
+ df.write.mode(SaveMode.Append)
+ .jdbc(jdbcUrl, "tblcopy", new Properties)
Review comment:
nit: put these in a loop?
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