[SPARK-8461] [SQL] fix codegen with REPL class loader

The ExecutorClassLoader for REPL will cause Janino failed to find class for those in java.lang, so switch to use default class loader for Janino, which will also help performance.

cc liancheng yhuai

Author: Davies Liu <davies@databricks.com>

Closes #6898 from davies/fix_class_loader and squashes the following commits:

24276d4 [Davies Liu] add regression test
4ff0457 [Davies Liu] address comment, refactor
7f5ffbe [Davies Liu] fix REPL class loader with codegen

1 files changed, 11 insertions, 0 deletions

diff --git a/repl/scala-2.10/src/test/scala/org/apache/spark/repl/ReplSuite.scala b/repl/scala-2.10/src/test/scala/org/apache/spark/repl/ReplSuite.scala
index 50fd43a418..f150fec7db 100644
--- a/repl/scala-2.10/src/test/scala/org/apache/spark/repl/ReplSuite.scala
+++ b/repl/scala-2.10/src/test/scala/org/apache/spark/repl/ReplSuite.scala
@@ -267,6 +267,17 @@ class ReplSuite extends SparkFunSuite {
     assertDoesNotContain("Exception", output)
   }
 
+  test("SPARK-8461 SQL with codegen") {
+    val output = runInterpreter("local",
+    """
+      |val sqlContext = new org.apache.spark.sql.SQLContext(sc)
+      |sqlContext.setConf("spark.sql.codegen", "true")
+      |sqlContext.range(0, 100).filter('id > 50).count()
+    """.stripMargin)
+    assertContains("Long = 49", output)
+    assertDoesNotContain("java.lang.ClassNotFoundException", output)
+  }
+
   test("SPARK-2632 importing a method from non serializable class and not using it.") {
     val output = runInterpreter("local",
     """