spark ExecutorsTab 源码
spark ExecutorsTab 代码
文件路径：/core/src/main/scala/org/apache/spark/ui/exec/ExecutorsTab.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.exec
import javax.servlet.http.HttpServletRequest
import scala.xml.Node
import org.apache.spark.internal.config.UI._
import org.apache.spark.ui.{SparkUI, SparkUITab, UIUtils, WebUIPage}
private[ui] class ExecutorsTab(parent: SparkUI) extends SparkUITab(parent, "executors") {
init()
private def init(): Unit = {
val threadDumpEnabled =
parent.sc.isDefined && parent.conf.get(UI_THREAD_DUMPS_ENABLED)
attachPage(new ExecutorsPage(this, threadDumpEnabled))
if (threadDumpEnabled) {
attachPage(new ExecutorThreadDumpPage(this, parent.sc))
}
}
}
private[ui] class ExecutorsPage(
parent: SparkUITab,
threadDumpEnabled: Boolean)
extends WebUIPage("") {
def render(request: HttpServletRequest): Seq[Node] = {
val content =
{
<div id="active-executors"></div> ++
<script src={UIUtils.prependBaseUri(request, "/static/utils.js")}></script> ++
<script src={UIUtils.prependBaseUri(request, "/static/executorspage.js")}></script> ++
<script>setThreadDumpEnabled({threadDumpEnabled})</script>
}
UIUtils.headerSparkPage(request, "Executors", content, parent, useDataTables = true)
}
}
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