rickyma commented on code in PR #1455:
URL: 
https://github.com/apache/incubator-uniffle/pull/1455#discussion_r1452889181


##########
client/src/main/java/org/apache/uniffle/client/impl/ShuffleReadClientImpl.java:
##########
@@ -293,6 +293,9 @@ public void checkProcessedBlockIds() {
 
   @Override
   public void close() {
+    if (sdr != null) {

Review Comment:
   ~~I think this will not cause any side effects, and it will be more 
readable? I can revert this if you want.~~
   
   After my stress test, I found that we need this to avoid potential memory 
leaks. 



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