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https://issues.apache.org/jira/browse/HADOOP-15327?focusedWorklogId=635087&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-635087
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ASF GitHub Bot logged work on HADOOP-15327:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 06/Aug/21 11:51
            Start Date: 06/Aug/21 11:51
    Worklog Time Spent: 10m 
      Work Description: szilard-nemeth commented on a change in pull request 
#3259:
URL: https://github.com/apache/hadoop/pull/3259#discussion_r684173898



##########
File path: 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/ShuffleHandler.java
##########
@@ -828,27 +893,44 @@ public void destroy() {
       }
     }
 
-    @Override
-    public ChannelPipeline getPipeline() throws Exception {
-      ChannelPipeline pipeline = Channels.pipeline();
+    @Override protected void initChannel(SocketChannel ch) throws Exception {
+      ChannelPipeline pipeline = ch.pipeline();
       if (sslFactory != null) {
         pipeline.addLast("ssl", new SslHandler(sslFactory.createSSLEngine()));
       }
       pipeline.addLast("decoder", new HttpRequestDecoder());
-      pipeline.addLast("aggregator", new HttpChunkAggregator(1 << 16));
-      pipeline.addLast("encoder", new HttpResponseEncoder());
+      pipeline.addLast("aggregator", new HttpObjectAggregator(1 << 16));

Review comment:
       Thanks, this is also valid.




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 635087)
    Time Spent: 1.5h  (was: 1h 20m)

> Upgrade MR ShuffleHandler to use Netty4
> ---------------------------------------
>
>                 Key: HADOOP-15327
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15327
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Xiaoyu Yao
>            Assignee: Szilard Nemeth
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HADOOP-15327.001.patch, HADOOP-15327.002.patch, 
> HADOOP-15327.003.patch, HADOOP-15327.004.patch, HADOOP-15327.005.patch, 
> HADOOP-15327.005.patch, 
> getMapOutputInfo_BlockingOperationException_awaitUninterruptibly.log, 
> testfailure-testMapFileAccess-emptyresponse.zip, 
> testfailure-testReduceFromPartialMem.zip
>
>          Time Spent: 1.5h
>  Remaining Estimate: 0h
>
> This way, we can remove the dependencies on the netty3 (jboss.netty)



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