jerqi commented on code in PR #1605:
URL: 
https://github.com/apache/incubator-uniffle/pull/1605#discussion_r1540967096


##########
server/src/main/java/org/apache/uniffle/server/netty/ShuffleServerNettyHandler.java:
##########
@@ -459,29 +463,27 @@ public void handleGetLocalShuffleData(TransportClient 
client, GetLocalShuffleDat
                     storageType,
                     offset,
                     length);
-        long readTime = System.currentTimeMillis() - start;
-        ShuffleServerMetrics.counterTotalReadTime.inc(readTime);
         ShuffleServerMetrics.counterTotalReadDataSize.inc(sdr.getDataLength());
         
ShuffleServerMetrics.counterTotalReadLocalDataFileSize.inc(sdr.getDataLength());
-        shuffleServer
-            .getNettyMetrics()
-            .recordProcessTime(GetLocalShuffleDataRequest.class.getName(), 
readTime);
-        LOG.info(
-            "Successfully getShuffleData cost {} ms for shuffle" + " data with 
{}",
-            readTime,
-            requestInfo);
         response =
             new GetLocalShuffleDataResponse(
                 req.getRequestId(), status, msg, sdr.getManagedBuffer());
+        ReleaseMemoryAndRecordReadTimeListener listener =
+            new ReleaseMemoryAndRecordReadTimeListener(
+                start, length, sdr.getDataLength(), requestInfo, req, client);
+        client.getChannel().writeAndFlush(response).addListener(listener);
+        return;
       } catch (Exception e) {
+        shuffleServer.getShuffleBufferManager().releaseReadMemory(length);

Review Comment:
   Why do we throw an exception in the future listener?



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