Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/290#discussion_r11545788
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/ui/StreamingJobProgressListener.scala
---
@@ -0,0 +1,148 @@
+/*
+ * 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.ui
+
+import org.apache.spark.streaming.{Time, StreamingContext}
+import org.apache.spark.streaming.scheduler._
+import scala.collection.mutable.{Queue, HashMap}
+import
org.apache.spark.streaming.scheduler.StreamingListenerReceiverStarted
+import org.apache.spark.streaming.scheduler.StreamingListenerBatchStarted
+import org.apache.spark.streaming.scheduler.BatchInfo
+import org.apache.spark.streaming.scheduler.ReceiverInfo
+import org.apache.spark.streaming.scheduler.StreamingListenerBatchSubmitted
+import org.apache.spark.util.Distribution
+
+
+private[ui] class StreamingJobProgressListener(ssc: StreamingContext)
extends StreamingListener {
+
+ private val waitingBatchInfos = new HashMap[Time, BatchInfo]
+ private val runningBatchInfos = new HashMap[Time, BatchInfo]
+ private val completedaBatchInfos = new Queue[BatchInfo]
+ private val batchInfoLimit =
ssc.conf.getInt("spark.steaming.ui.maxBatches", 100)
+ private var totalCompletedBatches = 0L
+ private val receiverInfos = new HashMap[Int, ReceiverInfo]
+
+ val batchDuration = ssc.graph.batchDuration.milliseconds
+
+ override def onReceiverStarted(receiverStarted:
StreamingListenerReceiverStarted) = {
+ synchronized {
+ receiverInfos.put(receiverStarted.receiverInfo.streamId,
receiverStarted.receiverInfo)
+ }
+ }
+
+ override def onBatchSubmitted(batchSubmitted:
StreamingListenerBatchSubmitted) = synchronized {
+ runningBatchInfos(batchSubmitted.batchInfo.batchTime) =
batchSubmitted.batchInfo
+ }
+
+ override def onBatchStarted(batchStarted: StreamingListenerBatchStarted)
= synchronized {
+ runningBatchInfos(batchStarted.batchInfo.batchTime) =
batchStarted.batchInfo
+ waitingBatchInfos.remove(batchStarted.batchInfo.batchTime)
+ }
+
+ override def onBatchCompleted(batchCompleted:
StreamingListenerBatchCompleted) = synchronized {
+ waitingBatchInfos.remove(batchCompleted.batchInfo.batchTime)
+ runningBatchInfos.remove(batchCompleted.batchInfo.batchTime)
+ completedaBatchInfos.enqueue(batchCompleted.batchInfo)
+ if (completedaBatchInfos.size > batchInfoLimit)
completedaBatchInfos.dequeue()
+ totalCompletedBatches += 1L
+ }
+
+ def numNetworkReceivers = synchronized {
+ ssc.graph.getNetworkInputStreams().size
+ }
+
+ def numTotalCompletedBatches: Long = synchronized {
+ totalCompletedBatches
+ }
+
+ def numUnprocessedBatches: Long = synchronized {
+ waitingBatchInfos.size + runningBatchInfos.size
+ }
+
+ def waitingBatches: Seq[BatchInfo] = synchronized {
+ waitingBatchInfos.values.toSeq
+ }
+
+ def runningBatches: Seq[BatchInfo] = synchronized {
+ runningBatchInfos.values.toSeq
+ }
+
+ def completedBatches: Seq[BatchInfo] = synchronized {
+ completedaBatchInfos.toSeq
+ }
+
+ def processingDelayDistribution: Option[Distribution] = synchronized {
+ extractDistribution(_.processingDelay)
+ }
+
+ def schedulingDelayDistribution: Option[Distribution] = synchronized {
+ extractDistribution(_.schedulingDelay)
+ }
+
+ def totalDelayDistribution: Option[Distribution] = synchronized {
+ extractDistribution(_.totalDelay)
+ }
+
+ def receivedRecordsDistributions: Map[Int, Option[Distribution]] =
synchronized {
+ val latestBatchInfos = allBatches.reverse.take(batchInfoLimit)
+ val latestBlockInfos = latestBatchInfos.map(_.receivedBlockInfo)
+ (0 until numNetworkReceivers).map { receiverId =>
+ val blockInfoOfParticularReceiver = latestBlockInfos.map { batchInfo
=>
+ batchInfo.get(receiverId).getOrElse(Array.empty)
+ }
+ val recordsOfParticularReceiver = blockInfoOfParticularReceiver.map
{ blockInfo =>
+ // calculate records per second for each batch
+ blockInfo.map(_.numRecords).sum.toDouble * 1000 / batchDuration
+ }
+ val distributionOption = Distribution(recordsOfParticularReceiver)
+ (receiverId, distributionOption)
+ }.toMap
+ }
+
+ def lastReceivedBatchRecords: Map[Int, Long] = {
+ val lastReceivedBlockInfoOption =
lastReceivedBatch.map(_.receivedBlockInfo)
+ lastReceivedBlockInfoOption.map { lastReceivedBlockInfo =>
+ (0 until numNetworkReceivers).map { receiverId =>
+ (receiverId,
lastReceivedBlockInfo(receiverId).map(_.numRecords).sum)
+ }.toMap
+ }.getOrElse {
+ (0 until numNetworkReceivers).map(receiverId => (receiverId,
0L)).toMap
+ }
+ }
+
+ def receiverInfo(receiverId: Int): Option[ReceiverInfo] = {
+ receiverInfos.get(receiverId)
+ }
+
+ def lastCompletedBatch: Option[BatchInfo] = {
+ completedaBatchInfos.sortBy(_.batchTime)(Time.ordering).lastOption
+ }
+
+ def lastReceivedBatch: Option[BatchInfo] = {
+ allBatches.lastOption
+ }
+
+ private def allBatches: Seq[BatchInfo] = synchronized {
--- End diff --
maybe this should be called `retainedBatches`? In some sense this is not
"all" of the batches because some have been evicted right?
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