[GitHub] [incubator-uniffle] jerqi commented on a diff in pull request #727: [#133] feat(netty): Add Netty Utils

["jerqi (via GitHub)" <gi...@apache.org>]

jerqi commented on code in PR #727:
URL: https://github.com/apache/incubator-uniffle/pull/727#discussion_r1141364584


##########
client-spark/spark2/src/main/java/org/apache/spark/network/util/NettyUtils.java:
##########
@@ -0,0 +1,137 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.network.util;
+
+import java.lang.reflect.Field;
+import java.util.concurrent.ThreadFactory;
+
+import io.netty.buffer.PooledByteBufAllocator;
+import io.netty.channel.Channel;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.ServerChannel;
+import io.netty.channel.epoll.EpollEventLoopGroup;
+import io.netty.channel.epoll.EpollServerSocketChannel;
+import io.netty.channel.epoll.EpollSocketChannel;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.channel.socket.nio.NioSocketChannel;
+import io.netty.util.concurrent.DefaultThreadFactory;
+import io.netty.util.internal.PlatformDependent;
+import io.netty.util.internal.SystemPropertyUtil;
+
+/** copy from spark, In order to override the createPooledByteBufAllocator method,
+ * the property DEFAULT_TINY_CACHE_SIZE does not exist in netty>4.1.47. */
+public class NettyUtils {

Review Comment:
   We have shaded Netty in Grpc.         
   ```
   <dependency>
         <groupId>io.grpc</groupId>
         <artifactId>grpc-netty-shaded</artifactId>
         <version>${grpc.version}</version>
   </dependency>
   ```
   Could we use this Netty?



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