zhijiangW commented on a change in pull request #11421: [FLINK-15962][network] 
Reduce the default chunk size to 4M in netty stack
URL: https://github.com/apache/flink/pull/11421#discussion_r394777548
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/NettyBufferPool.java
 ##########
 @@ -61,11 +61,11 @@
 
        /**
         * Arenas allocate chunks of pageSize << maxOrder bytes. With these 
defaults, this results in
-        * chunks of 16 MB.
+        * chunks of 4 MB.
 
 Review comment:
   There are also many other places mentioned `16 MB` in comments, and we 
should still adjust them.

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