zuston commented on code in PR #2405:
URL: https://github.com/apache/uniffle/pull/2405#discussion_r2024158373
##########
client-spark/common/src/main/java/org/apache/uniffle/shuffle/manager/RssShuffleManagerBase.java:
##########
@@ -1538,6 +1546,48 @@ public boolean isValidTask(String taskId) {
return !failedTaskIds.contains(taskId);
}
+ protected <K> String encode(Ordering<K> obj) {
+ try {
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ ObjectOutputStream oos = new ObjectOutputStream(baos);
+ oos.writeObject(obj);
+ oos.close();
+ return "#" + Base64.getEncoder().encodeToString(baos.toByteArray());
+ } catch (Exception e) {
+ throw new RssException(e);
+ }
+ }
+
+ protected <K, V, C> MergeContext buildMergeContext(ShuffleDependency<K, V,
C> dependency) {
+ if (remoteMergeEnable) {
+ MergeContext mergeContext =
+ MergeContext.newBuilder()
+ .setKeyClass(dependency.keyClassName())
+ .setValueClass(
+ dependency.mapSideCombine()
+ ? dependency.combinerClassName().get()
+ : dependency.valueClassName())
+ .setComparatorClass(
+ dependency
+ .keyOrdering()
Review Comment:
if the keyOrdering is empty, the remote merge could be disabled?
@zhengchenyu
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