Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/6870#discussion_r33729777
--- Diff:
core/src/test/scala/org/apache/spark/scheduler/ExecutorBlacklistTrackerSuite.scala
---
@@ -0,0 +1,158 @@
+/*
+ * 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.scheduler
+
+import scala.collection.mutable
+
+import org.scalatest.{BeforeAndAfter, PrivateMethodTester}
+
+import org.apache.spark._
+import
org.apache.spark.scheduler.ExecutorBlacklistTracker.ExecutorFailureStatus
+import org.apache.spark.scheduler.cluster.ExecutorInfo
+import org.apache.spark.util.ManualClock
+
+class ExecutorBlacklistTrackerSuite
+ extends SparkFunSuite
+ with LocalSparkContext
+ with BeforeAndAfter {
+ import ExecutorBlacklistTrackerSuite._
+
+ before {
+ if (sc == null) {
+ sc = createSparkContext
+ }
+ }
+
+ after {
+ if (sc != null) {
+ sc.stop()
+ sc = null
+ }
+ }
+
+ test("add executor to blacklist") {
+ // Add 5 executors
+ addExecutors(5)
+ val tracker = sc.executorBlacklistTracker.get
+ assert(numExecutorsRegistered(tracker) === 5)
+
+ // Post 5 TaskEnd event to executor-1 to add executor-1 into blacklist
+ (0 until 5).foreach(_ => postTaskEndEvent(TaskResultLost,
"executor-1"))
+
+ assert(tracker.getExecutorBlacklist === Set("executor-1"))
+ assert(executorIdToTaskFailures(tracker)("executor-1").numFailures ===
5)
+ assert(executorIdToTaskFailures(tracker)("executor-1").isBlackListed
=== true)
+
+ // Post 10 TaskEnd event to executor-2 to add executor-2 into blacklist
+ (0 until 10).foreach(_ => postTaskEndEvent(TaskResultLost,
"executor-2"))
+ assert(tracker.getExecutorBlacklist === Set("executor-1",
"executor-2"))
+ assert(executorIdToTaskFailures(tracker)("executor-2").numFailures ===
10)
+ assert(executorIdToTaskFailures(tracker)("executor-2").isBlackListed
=== true)
+
+ // Post 5 TaskEnd event to executor-3 to verify whether executor-3 is
blacklisted
+ (0 until 5).foreach(_ => postTaskEndEvent(TaskResultLost,
"executor-3"))
+ // Since the failure number of executor-3 is less than the average
blacklist threshold,
+ // though exceed the fault threshold, still should not be added into
blacklist
+ assert(tracker.getExecutorBlacklist === Set("executor-1",
"executor-2"))
+ assert(executorIdToTaskFailures(tracker)("executor-3").numFailures ===
5)
+ assert(executorIdToTaskFailures(tracker)("executor-3").isBlackListed
=== false)
+
+ // Keep post TaskEnd event to executor-3 to add executor-3 into
blacklist
+ (0 until 2).foreach(_ => postTaskEndEvent(TaskResultLost,
"executor-3"))
+ assert(tracker.getExecutorBlacklist === Set("executor-1",
"executor-2", "executor-3"))
+ assert(executorIdToTaskFailures(tracker)("executor-3").numFailures ===
7)
+ assert(executorIdToTaskFailures(tracker)("executor-3").isBlackListed
=== true)
+
+ // Post TaskEnd event to executor-4 to verify whether executor-4 could
be added into blacklist
+ (0 until 10).foreach(_ => postTaskEndEvent(TaskResultLost,
"executor-4"))
+ // Event executor-4's failure task number is above than blacklist
threshold,
+ // but the blacklisted executor number is reaching to maximum fraction,
+ // so executor-4 still cannot be added into blacklist.
+ assert(tracker.getExecutorBlacklist === Set("executor-1",
"executor-2", "executor-3"))
+ assert(executorIdToTaskFailures(tracker)("executor-4").numFailures ===
10)
+ assert(executorIdToTaskFailures(tracker)("executor-4").isBlackListed
=== false)
+ }
+
+ test("remove executor from blacklist") {
+ // Add 5 executors
+ addExecutors(5)
+ val tracker = sc.executorBlacklistTracker.get
+ val clock = new ManualClock(10000L)
+ tracker.setClock(clock)
+ assert(numExecutorsRegistered(tracker) === 5)
+
+ // Post 5 TaskEnd event to executor-1 to add executor-1 into blacklist
+ (0 until 5).foreach(_ => postTaskEndEvent(TaskResultLost,
"executor-1"))
+
+ assert(tracker.getExecutorBlacklist === Set("executor-1"))
+ assert(executorIdToTaskFailures(tracker)("executor-1").numFailures ===
5)
+ assert(executorIdToTaskFailures(tracker)("executor-1").isBlackListed
=== true)
+ assert(executorIdToTaskFailures(tracker)("executor-1").updatedTime ===
10000L)
+
+ // Advance the timer
+ clock.advance(70 * 1000)
+ expireTimeoutExecutorBlacklist(tracker)
+ assert(tracker.getExecutorBlacklist === Set.empty)
+ assert(executorIdToTaskFailures(tracker)("executor-1").numFailures ===
5)
+ assert(executorIdToTaskFailures(tracker)("executor-1").isBlackListed
=== false)
+ }
+
+ private def createSparkContext: SparkContext = {
+ val conf = new SparkConf()
+ .setMaster("local")
+ .setAppName("test-executor-blacklist-tracker")
+ .set("spark.scheduler.blacklist.enabled", "true")
+
.set("spark.scheduler.blacklist.executorFaultTimeoutWindowInMinutes", "1")
+ val sc = new SparkContext(conf)
+ sc
+ }
+
+ private def addExecutors(numExecutor: Int): Unit = {
+ for (i <- 1 to numExecutor) {
+ sc.listenerBus.postToAll(SparkListenerExecutorAdded(
+ 0L, s"executor-$i", new ExecutorInfo(s"host$i", 1, Map.empty)))
--- End diff --
nit: indent 2 more spaces
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