Github user zsxwing commented on the pull request:
https://github.com/apache/spark/pull/5130#issuecomment-84860442
> Do InvocationTargetExceptions only wrap Exceptions and not all Throwables?
It will wrap Error, too. Run the following codes in my machine,
```Scala
class Foo {}
object Foo {
def main(args: Array[String]): Unit = {
val a = ArrayBuffer[String]()
while(true) {
a += "111111111111111111111111111111"
}
}
}
object Bar {
def main(args: Array[String]): Unit = {
val mainMethod = classOf[Foo].getMethod("main", classOf[Array[String]])
mainMethod.invoke(null, null)
}
}
```
and it outputs,
```
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at Bar$.main(Nio.scala:72)
at Bar.main(Nio.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: java.lang.OutOfMemoryError: Java heap space
at
scala.collection.mutable.ResizableArray$class.ensureSize(ResizableArray.scala:99)
at scala.collection.mutable.ArrayBuffer.ensureSize(ArrayBuffer.scala:47)
at scala.collection.mutable.ArrayBuffer.$plus$eq(ArrayBuffer.scala:83)
at Foo$.main(Nio.scala:62)
at Foo.main(Nio.scala)
... 11 more
```
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