zuston commented on code in PR #1528:
URL: 
https://github.com/apache/incubator-uniffle/pull/1528#discussion_r1513753338


##########
server/src/main/java/org/apache/uniffle/server/ShuffleServerGrpcService.java:
##########
@@ -528,6 +529,15 @@ public void getShuffleResult(
     String appId = request.getAppId();
     int shuffleId = request.getShuffleId();
     int partitionId = request.getPartitionId();
+    BlockIdLayout blockIdLayout = BlockIdLayout.DEFAULT;
+    // legacy clients might send request without block id layout, we fall back 
to DEFAULT then

Review Comment:
   If using the latest client connecting to the older shuffle server, the 
incorrect blocks list will be returned. 
   
   Maybe we should upgrade the default SHUFFLE_SERVER_VERSION to avoid 
this(fail fast is another option if we can), this looks a uncompatible change.



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