Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/3792#discussion_r22305806
--- Diff:
network/common/src/main/java/org/apache/spark/network/util/JavaUtils.java ---
@@ -41,6 +41,34 @@
public class JavaUtils {
private static final Logger logger =
LoggerFactory.getLogger(JavaUtils.class);
+ /** Deserialize a byte array using Java serialization. */
+ public static <T> T deserialize(byte[] bytes) {
+ try {
+ ObjectInputStream is = new ObjectInputStream(new
ByteArrayInputStream(bytes));
+ Object out = is.readObject();
+ is.close();
+ return (T) out;
+ } catch (ClassNotFoundException e) {
+ throw new RuntimeException("Could not deserialize object", e);
--- End diff --
I was thinking that you don't expect to not have the class on hand... But
sure, IllegalArgumentException because the bytes describe something invalid?
The principle is to avoid RuntimeException since it is the superclass of all
unchecked exceptions. If you ever wanted to catch this exception to deal with
it you'd have no hope of distinguishing with a catch block. So reach for
another standard and slightly more specific exception. Marginal argument here,
but I think still common good practice in Java.
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