spark RDDInfo 源码
spark RDDInfo 代码
文件路径：/core/src/main/scala/org/apache/spark/storage/RDDInfo.scala
/*
* 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.
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package org.apache.spark.storage
import org.apache.spark.SparkEnv
import org.apache.spark.annotation.DeveloperApi
import org.apache.spark.internal.config._
import org.apache.spark.rdd.{DeterministicLevel, RDD, RDDOperationScope}
import org.apache.spark.util.Utils
@DeveloperApi
class RDDInfo(
val id: Int,
var name: String,
val numPartitions: Int,
var storageLevel: StorageLevel,
val isBarrier: Boolean,
val parentIds: Seq[Int],
val callSite: String = "",
val scope: Option[RDDOperationScope] = None,
val outputDeterministicLevel: DeterministicLevel.Value = DeterministicLevel.DETERMINATE)
extends Ordered[RDDInfo] {
var numCachedPartitions = 0
var memSize = 0L
var diskSize = 0L
def isCached: Boolean = (memSize + diskSize > 0) && numCachedPartitions > 0
override def toString: String = {
import Utils.bytesToString
("RDD \"%s\" (%d) StorageLevel: %s; CachedPartitions: %d; TotalPartitions: %d; " +
"MemorySize: %s; DiskSize: %s").format(
name, id, storageLevel.toString, numCachedPartitions, numPartitions,
bytesToString(memSize), bytesToString(diskSize))
}
override def compare(that: RDDInfo): Int = {
this.id - that.id
}
}
private[spark] object RDDInfo {
def fromRdd(rdd: RDD[_]): RDDInfo = {
val rddName = Option(rdd.name).getOrElse(Utils.getFormattedClassName(rdd))
val parentIds = rdd.dependencies.map(_.rdd.id)
val callsiteLongForm = Option(SparkEnv.get)
.map(_.conf.get(EVENT_LOG_CALLSITE_LONG_FORM))
.getOrElse(false)
val callSite = if (callsiteLongForm) {
rdd.creationSite.longForm
} else {
rdd.creationSite.shortForm
}
new RDDInfo(rdd.id, rddName, rdd.partitions.length,
rdd.getStorageLevel, rdd.isBarrier(), parentIds, callSite, rdd.scope,
rdd.outputDeterministicLevel)
}
}
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