Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/22173#discussion_r218924768
--- Diff:
common/network-common/src/main/java/org/apache/spark/network/server/ChunkFetchRequestHandler.java
---
@@ -0,0 +1,136 @@
+/*
+ * 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.server;
+
+import java.net.SocketAddress;
+
+import com.google.common.base.Throwables;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelFutureListener;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.SimpleChannelInboundHandler;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.apache.spark.network.buffer.ManagedBuffer;
+import org.apache.spark.network.client.TransportClient;
+import org.apache.spark.network.protocol.ChunkFetchFailure;
+import org.apache.spark.network.protocol.ChunkFetchRequest;
+import org.apache.spark.network.protocol.ChunkFetchSuccess;
+import org.apache.spark.network.protocol.Encodable;
+
+import static org.apache.spark.network.util.NettyUtils.*;
+
+
--- End diff --
remove extra empty line
---
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