Github user sohami commented on a diff in the pull request:
https://github.com/apache/drill/pull/950#discussion_r140621499
--- Diff:
exec/rpc/src/main/java/org/apache/drill/exec/rpc/ConnectionMultiListener.java
---
@@ -0,0 +1,240 @@
+/*
+ * 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.drill.exec.rpc;
+
+import com.google.protobuf.MessageLite;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelFuture;
+import io.netty.util.concurrent.Future;
+import io.netty.util.concurrent.GenericFutureListener;
+import org.apache.drill.common.exceptions.DrillException;
+import org.slf4j.Logger;
+
+import java.net.SocketAddress;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * @param <CC> Client Connection Listener
+ * @param <HS> Outbound handshake message type
+ * @param <HR> Inbound handshake message type
+ * @param <BC> BasicClient type
+ * <p>
+ * Implements a wrapper class that allows a client connection
to associate different behaviours after
+ * establishing a connection with the server. The client can
choose to send an application handshake, or
+ * in the case of SSL, wait for a SSL handshake completion and
then send an application handshake.
+ */
+
+public class ConnectionMultiListener<CC extends ClientConnection, HS
extends MessageLite, HR extends MessageLite, BC extends BasicClient> {
--- End diff --
I am seeing lots of unchecked warning for this file. Please fix those.
---
