wonook commented on a change in pull request #28: [NEMO-12] Frontend support
for Scala Spark
URL: https://github.com/apache/incubator-nemo/pull/28#discussion_r193319477
##########
File path:
compiler/frontend/spark/src/main/java/edu/snu/nemo/compiler/frontend/spark/transform/CollectTransform.java
##########
@@ -57,11 +57,13 @@ public void onData(final T element) {
@Override
public void close() {
try (
- FileOutputStream fos = new FileOutputStream(filename);
- ObjectOutputStream oos = new ObjectOutputStream(fos)
+ final FileOutputStream fos = new FileOutputStream(filename);
+ final ObjectOutputStream oos = new ObjectOutputStream(fos)
) {
- oos.writeObject(list);
- oos.close();
+ oos.writeInt(list.size()); // Write the length of list at first.
Review comment:
Is this also implemented in Spark? Do they write the length of the list
before writing the actual list?
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