in hadoop-api-shim/src/main/java/org/apache/hadoop/fs/shim/impl/ShimReflectionSupport.java [65:72]
public static IOException convertToIOException(Exception e) {
if (e instanceof InvocationTargetException
|| e instanceof ExecutionException) {
return unwrapAndconvertToIOException(e);
} else {
return convertUnwrappedExceptionToIOE(e);
}
}