Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/3001#discussion_r19652854
--- Diff:
network/shuffle/src/main/java/org/apache/spark/network/shuffle/OneForOneBlockFetcher.java
---
@@ -0,0 +1,121 @@
+/*
+ * 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.shuffle;
+
+import java.util.Arrays;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.apache.spark.network.buffer.ManagedBuffer;
+import org.apache.spark.network.client.ChunkReceivedCallback;
+import org.apache.spark.network.client.RpcResponseCallback;
+import org.apache.spark.network.client.TransportClient;
+import org.apache.spark.network.util.JavaUtils;
+
+/**
+ * Simple wrapper on top of a TransportClient which interprets each chunk
as a whole block, and
+ * invokes the BlockFetchingListener appropriately. This class is agnostic
to the actual RPC
+ * handler, as long as there is a single "open blocks" message which
returns a ShuffleStreamHandle,
+ * and Java serialization is used.
+ *
+ * Note that this typically corresponds to a
+ * {@link org.apache.spark.network.server.OneForOneStreamManager} on the
server side.
+ */
+public class OneForOneBlockFetcher {
--- End diff --
i don't have a good suggestion yet, but OneForOneStreamManager is not the
best name.
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