spark JobsTab 源码
spark JobsTab 代码
文件路径：/core/src/main/scala/org/apache/spark/ui/jobs/JobsTab.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 org.apache.spark.JobExecutionStatus
import org.apache.spark.internal.config.SCHEDULER_MODE
import org.apache.spark.scheduler.SchedulingMode
import org.apache.spark.status.AppStatusStore
import org.apache.spark.ui._
/** Web UI showing progress status of all jobs in the given SparkContext. */
private[ui] class JobsTab(parent: SparkUI, store: AppStatusStore)
extends SparkUITab(parent, "jobs") {
val sc = parent.sc
val conf = parent.conf
val killEnabled = parent.killEnabled
// Show pool information for only live UI.
def isFairScheduler: Boolean = {
sc.isDefined &&
store
.environmentInfo()
.sparkProperties
.contains((SCHEDULER_MODE.key, SchedulingMode.FAIR.toString))
}
def getSparkUser: String = parent.getSparkUser
attachPage(new AllJobsPage(this, store))
attachPage(new JobPage(this, store))
def handleKillRequest(request: HttpServletRequest): Unit = {
if (killEnabled && parent.securityManager.checkModifyPermissions(request.getRemoteUser)) {
Option(request.getParameter("id")).map(_.toInt).foreach { id =>
store.asOption(store.job(id)).foreach { job =>
if (job.status == JobExecutionStatus.RUNNING) {
sc.foreach(_.cancelJob(id))
// Do a quick pause here to give Spark time to kill the job so it shows up as
// killed after the refresh. Note that this will block the serving thread so the
// time should be limited in duration.
Thread.sleep(100)
}
}
}
}
}
}
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