[SPARK-17780][SQL] Report Throwable to user in StreamExecution

## What changes were proposed in this pull request?

When using an incompatible source for structured streaming, it may throw NoClassDefFoundError. It's better to just catch Throwable and report it to the user since the streaming thread is dying.

## How was this patch tested?

`test("NoClassDefFoundError from an incompatible source")`

Author: Shixiong Zhu <shixiong@databricks.com>

Closes #15352 from zsxwing/SPARK-17780.

sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/StreamExecution.scala

@@ -207,13 +207,18 @@ class StreamExecution(
       })
     } catch {
       case _: InterruptedException if state == TERMINATED => // interrupted by stop()
-      case NonFatal(e) =>
+      case e: Throwable =>
         streamDeathCause = new StreamingQueryException(
           this,
           s"Query $name terminated with exception: ${e.getMessage}",
           e,
           Some(committedOffsets.toCompositeOffset(sources)))
         logError(s"Query $name terminated with error", e)
+        // Rethrow the fatal errors to allow the user using `Thread.UncaughtExceptionHandler` to
+        // handle them
+        if (!NonFatal(e)) {
+          throw e
+        }
     } finally {
       state = TERMINATED
       sparkSession.streams.notifyQueryTermination(StreamExecution.this)

sql/core/src/test/scala/org/apache/spark/sql/streaming/StreamSuite.scala

@@ -17,10 +17,12 @@
 
 package org.apache.spark.sql.streaming
 
+import scala.reflect.ClassTag
+import scala.util.control.ControlThrowable
+
 import org.apache.spark.sql._
 import org.apache.spark.sql.execution.streaming._
 import org.apache.spark.sql.sources.StreamSourceProvider
-import org.apache.spark.sql.test.SharedSQLContext
 import org.apache.spark.sql.types.{IntegerType, StructField, StructType}
 import org.apache.spark.util.ManualClock
 
@@ -236,6 +238,33 @@ class StreamSuite extends StreamTest {
     }
   }
 
+  testQuietly("fatal errors from a source should be sent to the user") {
+    for (e <- Seq(
+      new VirtualMachineError {},
+      new ThreadDeath,
+      new LinkageError,
+      new ControlThrowable {}
+    )) {
+      val source = new Source {
+        override def getOffset: Option[Offset] = {
+          throw e
+        }
+
+        override def getBatch(start: Option[Offset], end: Offset): DataFrame = {
+          throw e
+        }
+
+        override def schema: StructType = StructType(Array(StructField("value", IntegerType)))
+
+        override def stop(): Unit = {}
+      }
+      val df = Dataset[Int](sqlContext.sparkSession, StreamingExecutionRelation(source))
+      testStream(df)(
+        ExpectFailure()(ClassTag(e.getClass))
+      )
+    }
+  }
+
   test("output mode API in Scala") {
     val o1 = OutputMode.Append
     assert(o1 === InternalOutputModes.Append)

sql/core/src/test/scala/org/apache/spark/sql/streaming/StreamTest.scala

@@ -167,7 +167,7 @@ trait StreamTest extends QueryTest with SharedSQLContext with Timeouts {
   /** Signals that a failure is expected and should not kill the test. */
   case class ExpectFailure[T <: Throwable : ClassTag]() extends StreamAction {
     val causeClass: Class[T] = implicitly[ClassTag[T]].runtimeClass.asInstanceOf[Class[T]]
-    override def toString(): String = s"ExpectFailure[${causeClass.getCanonicalName}]"
+    override def toString(): String = s"ExpectFailure[${causeClass.getName}]"
   }
 
   /** Assert that a body is true */
@@ -322,7 +322,6 @@ trait StreamTest extends QueryTest with SharedSQLContext with Timeouts {
               new UncaughtExceptionHandler {
                 override def uncaughtException(t: Thread, e: Throwable): Unit = {
                   streamDeathCause = e
-                  testThread.interrupt()
                 }
               })