Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/1434#discussion_r15656394
--- Diff:
extras/kinesis-asl/src/main/scala/org/apache/spark/streaming/kinesis/KinesisReceiver.scala
---
@@ -0,0 +1,144 @@
+/*
+ * 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.streaming.kinesis
+
+import java.net.InetAddress
+import java.util.UUID
+
+import org.apache.spark.Logging
+import org.apache.spark.storage.StorageLevel
+import org.apache.spark.streaming.receiver.Receiver
+
+import com.amazonaws.auth.AWSCredentialsProvider
+import com.amazonaws.auth.DefaultAWSCredentialsProviderChain
+import
com.amazonaws.services.kinesis.clientlibrary.interfaces.IRecordProcessor
+import
com.amazonaws.services.kinesis.clientlibrary.interfaces.IRecordProcessorFactory
+import
com.amazonaws.services.kinesis.clientlibrary.lib.worker.InitialPositionInStream
+import
com.amazonaws.services.kinesis.clientlibrary.lib.worker.KinesisClientLibConfiguration
+import com.amazonaws.services.kinesis.clientlibrary.lib.worker.Worker
+
+/**
+ * Custom AWS Kinesis-specific implementation of Spark Streaming's
Receiver.
+ * This implementation relies on the Kinesis Client Library (KCL) Worker
as described here:
+ * https://github.com/awslabs/amazon-kinesis-client
+ * This is a custom receiver used with
StreamingContext.receiverStream(Receiver)
+ * as described here:
+ * http://spark.apache.org/docs/latest/streaming-custom-receivers.html
+ * Instances of this class will get shipped to the Spark Streaming Workers
+ * to run within a Spark Executor.
+ *
+ * @param appName Kinesis Application Name. Kinesis apps are mapped to
Kinesis streams
+ * by the Kinesis Client Library. If you change the app name or stream
name,
+ * the KCL will throw errors.
+ * @param stream Kinesis stream name
+ * @param endpoint url of Kinesis service
+ * @param checkpointIntervalMillis for Kinesis checkpointing (not Spark
checkpointing).
+ * See the Kinesis Spark Streaming documentation for more details on the
different types
+ * of checkpoints.
+ * @param initialPositionInStream in the absence of Kinesis checkpoint
info, this is the worker's initial
--- End diff --
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