Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/5680#discussion_r29408797
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/InputInfoTracker.scala
---
@@ -0,0 +1,74 @@
+/*
+ * 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.scheduler
+
+import scala.collection.mutable
+
+import org.apache.spark.Logging
+import org.apache.spark.streaming.{Time, StreamingContext}
+
+/** To track the information of input stream at specified batch time. */
+case class InputInfo(batchTime: Time, inputStreamId: Int, numRecords: Long)
+
+/**
+ * This class manages all the input streams as well as their input data
statistics. The information
+ * will output to StreamingListener to better monitoring.
+ */
+private[streaming] class InputInfoTracker(ssc: StreamingContext) extends
Logging {
+
+ /** Track all the input streams registered in DStreamGraph */
+ val inputStreams = ssc.graph.getInputStreams()
+ /** Track all the id of input streams registered in DStreamGraph */
+ val inputStreamIds = inputStreams.map(_.id)
--- End diff --
Can this be private?
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