spark PoolPage 源码
spark PoolPage 代码
文件路径：/core/src/main/scala/org/apache/spark/ui/jobs/PoolPage.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.
*/
package org.apache.spark.ui.jobs
import javax.servlet.http.HttpServletRequest
import scala.xml.Node
import org.apache.spark.status.PoolData
import org.apache.spark.ui.{UIUtils, WebUIPage}
/** Page showing specific pool details */
private[ui] class PoolPage(parent: StagesTab) extends WebUIPage("pool") {
def render(request: HttpServletRequest): Seq[Node] = {
val poolName = Option(request.getParameter("poolname")).map { poolname =>
UIUtils.decodeURLParameter(poolname)
}.getOrElse {
throw new IllegalArgumentException(s"Missing poolname parameter")
}
// For now, pool information is only accessible in live UIs
val pool = parent.sc.flatMap(_.getPoolForName(poolName)).getOrElse {
throw new IllegalArgumentException(s"Unknown pool: $poolName")
}
val uiPool = parent.store.asOption(parent.store.pool(poolName)).getOrElse(
new PoolData(poolName, Set()))
val activeStages = uiPool.stageIds.toSeq.map(parent.store.lastStageAttempt(_))
val activeStagesTable =
new StageTableBase(parent.store, request, activeStages, "", "activeStage", parent.basePath,
"stages/pool", parent.isFairScheduler, parent.killEnabled, false)
val poolTable = new PoolTable(Map(pool -> uiPool), parent)
var content = <h4>Summary </h4> ++ poolTable.toNodeSeq(request)
if (activeStages.nonEmpty) {
content ++=
<span class="collapse-aggregated-poolActiveStages collapse-table"
onClick="collapseTable('collapse-aggregated-poolActiveStages',
'aggregated-poolActiveStages')">
<h4>
<span class="collapse-table-arrow arrow-open"></span>
<a>Active Stages ({activeStages.size})</a>
</h4>
</span> ++
<div class="aggregated-poolActiveStages collapsible-table">
{activeStagesTable.toNodeSeq}
</div>
}
UIUtils.headerSparkPage(request, "Fair Scheduler Pool: " + poolName, content, parent)
}
}
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