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/*
* 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.ui.storage
import scala.collection.mutable
import org.apache.spark.annotation.DeveloperApi
import org.apache.spark.scheduler._
import org.apache.spark.storage._
import org.apache.spark.ui._
/** Web UI showing storage status of all RDD's in the given SparkContext. */
private[ui] class StorageTab(parent: SparkUI) extends SparkUITab(parent, "storage") {
val listener = parent.storageListener
attachPage(new StoragePage(this))
attachPage(new RDDPage(this))
}
/**
* :: DeveloperApi ::
* A SparkListener that prepares information to be displayed on the BlockManagerUI.
*
* This class is thread-safe (unlike JobProgressListener)
*/
@DeveloperApi
class StorageListener(storageStatusListener: StorageStatusListener) extends BlockStatusListener {
private[ui] val _rddInfoMap = mutable.Map[Int, RDDInfo]() // exposed for testing
def activeStorageStatusList: Seq[StorageStatus] = storageStatusListener.storageStatusList
/** Filter RDD info to include only those with cached partitions */
def rddInfoList: Seq[RDDInfo] = synchronized {
_rddInfoMap.values.filter(_.numCachedPartitions > 0).toSeq
}
/** Update the storage info of the RDDs whose blocks are among the given updated blocks */
private def updateRDDInfo(updatedBlocks: Seq[(BlockId, BlockStatus)]): Unit = {
val rddIdsToUpdate = updatedBlocks.flatMap { case (bid, _) => bid.asRDDId.map(_.rddId) }.toSet
val rddInfosToUpdate = _rddInfoMap.values.toSeq.filter { s => rddIdsToUpdate.contains(s.id) }
StorageUtils.updateRddInfo(rddInfosToUpdate, activeStorageStatusList)
}
/**
* Assumes the storage status list is fully up-to-date. This implies the corresponding
* StorageStatusSparkListener must process the SparkListenerTaskEnd event before this listener.
*/
override def onTaskEnd(taskEnd: SparkListenerTaskEnd): Unit = synchronized {
val metrics = taskEnd.taskMetrics
if (metrics != null && metrics.updatedBlockStatuses.nonEmpty) {
updateRDDInfo(metrics.updatedBlockStatuses)
}
}
override def onStageSubmitted(stageSubmitted: SparkListenerStageSubmitted): Unit = synchronized {
val rddInfos = stageSubmitted.stageInfo.rddInfos
rddInfos.foreach { info => _rddInfoMap.getOrElseUpdate(info.id, info) }
}
override def onStageCompleted(stageCompleted: SparkListenerStageCompleted): Unit = synchronized {
// Remove all partitions that are no longer cached in current completed stage
val completedRddIds = stageCompleted.stageInfo.rddInfos.map(r => r.id).toSet
_rddInfoMap.retain { case (id, info) =>
!completedRddIds.contains(id) || info.numCachedPartitions > 0
}
}
override def onUnpersistRDD(unpersistRDD: SparkListenerUnpersistRDD): Unit = synchronized {
_rddInfoMap.remove(unpersistRDD.rddId)
}
}
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