waitinfuture commented on code in PR #1843:
URL: 
https://github.com/apache/incubator-celeborn/pull/1843#discussion_r1307436967


##########
client-spark/spark-3/src/main/java/org/apache/spark/shuffle/celeborn/SparkShuffleManager.java:
##########
@@ -304,17 +309,8 @@ public <K, C> ShuffleReader<K, C> getReaderForRange(
       TaskContext context,
       ShuffleReadMetricsReporter metrics) {
     if (handle instanceof CelebornShuffleHandle) {
-      @SuppressWarnings("unchecked")
-      CelebornShuffleHandle<K, ?, C> h = (CelebornShuffleHandle<K, ?, C>) 
handle;
-      return new CelebornShuffleReader<>(
-          h,
-          startPartition,
-          endPartition,
-          startMapIndex,
-          endMapIndex,
-          context,
-          celebornConf,
-          metrics);
+      return getCelebornShuffleReader(
+          handle, startPartition, endPartition, startMapIndex, endMapIndex, 
context, metrics);

Review Comment:
   Should put `startMapIndex/endMapIndex` before 
`startPartition/startPartition`. BTW, should we make it consist of the order of 
map indices and partition indices among different methods?



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