Github user kayousterhout commented on a diff in the pull request:
https://github.com/apache/spark/pull/15644#discussion_r86439529
--- Diff:
core/src/test/scala/org/apache/spark/scheduler/TaskSchedulerImplSuite.scala ---
@@ -282,6 +317,154 @@ class TaskSchedulerImplSuite extends SparkFunSuite
with LocalSparkContext with B
assert(!failedTaskSet)
}
+ /**
+ * Create tasksets, a mock blacklist, and a set of offers commmon to
some tests on taskset
+ * blacklists.
+ */
+ private def taskSetBlacklistSetup(): IndexedSeq[WorkerOffer] = {
+ (0 to 2).foreach {stageId =>
+ val taskSet = FakeTask.createTaskSet(numTasks = 2, stageId =
stageId, stageAttemptId = 0)
+ taskScheduler.submitTasks(taskSet)
+ }
+
+ // Setup our mock blacklist:
+ // * stage 0 is blacklisted on node "host1"
+ // * stage 1 is blacklisted on executor "executor3"
+ // * stage 0, partition 0 is blacklisted on executor 0
+ // Setup some defaults (nothing is blacklisted), then override them
with particulars.
+ // (Later stubs take precedence over earlier ones.)
+ stageToMockTaskSetBlacklist.values.foreach { taskSetBlacklist =>
+
when(taskSetBlacklist.isNodeBlacklistedForTaskSet(anyString())).thenReturn(false)
+
when(taskSetBlacklist.isExecutorBlacklistedForTaskSet(anyString())).thenReturn(false)
+ when(taskSetBlacklist.isExecutorBlacklistedForTask(anyString(),
anyInt())).thenReturn(false)
+ when(taskSetBlacklist.isNodeBlacklistedForTask(anyString(),
anyInt())).thenReturn(false)
+ }
+
when(stageToMockTaskSetBlacklist(0).isNodeBlacklistedForTaskSet("host1")).thenReturn(true)
+
when(stageToMockTaskSetBlacklist(1).isExecutorBlacklistedForTaskSet("executor3"))
+ .thenReturn(true)
+
when(stageToMockTaskSetBlacklist(0).isExecutorBlacklistedForTask("executor0",
0))
+ .thenReturn(true)
+ IndexedSeq(
+ new WorkerOffer("executor0", "host0", 1),
+ new WorkerOffer("executor1", "host1", 1),
+ new WorkerOffer("executor2", "host1", 1),
+ new WorkerOffer("executor3", "host2", 10)
+ )
+ }
+
+ test("scheduled tasks obey task and stage blacklists") {
+ taskScheduler = setupSchedulerWithMockTaskSetBlacklist()
+ val firstTaskAttempts =
taskScheduler.resourceOffers(taskSetBlacklistSetup()).flatten
+ // Whenever we schedule a task, we must consult the node and executor
blacklist. (The test
+ // doesn't check exactly what checks are made the offers get shuffled.)
--- End diff --
add "because" before "the"?
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