[jira] [Created] (SPARK-28584) Flaky test: org.apache.spark.scheduler.TaskSchedulerImplSuite

["Marcelo Vanzin (JIRA)" <ji...@apache.org>]

Marcelo Vanzin created SPARK-28584:
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             Summary: Flaky test: org.apache.spark.scheduler.TaskSchedulerImplSuite
                 Key: SPARK-28584
                 URL: https://issues.apache.org/jira/browse/SPARK-28584
             Project: Spark
          Issue Type: Bug
          Components: Tests
    Affects Versions: 3.0.0
            Reporter: Marcelo Vanzin


This is another of those tests that don't seem to fail in PRs here, but fail more often than we'd like in our build machines. In this case it fails in several different ways, e.g.:

{noformat}
org.scalatest.exceptions.TestFailedException: Map(org.apache.spark.scheduler.TaskSetManager$$EnhancerByMockitoWithCGLIB$$c676cf51@412f9d43 -> 1550579875956) did not contain key org.apache.spark.scheduler.TaskSetManager$$EnhancerByMockitoWithCGLIB$$c676cf51@1945f15f
      at org.scalatest.Assertions$class.newAssertionFailedException(Assertions.scala:528)
      at org.scalatest.FunSuite.newAssertionFailedException(FunSuite.scala:1560)
      at org.scalatest.Assertions$AssertionsHelper.macroAssert(Assertions.scala:501)
      at org.apache.spark.scheduler.TaskSchedulerImplSuite$$anonfun$21.apply(TaskSchedulerImplSuite.scala:635)
      at org.apache.spark.scheduler.TaskSchedulerImplSuite$$anonfun$21.apply(TaskSchedulerImplSuite.scala:591)
{noformat}

Or:

{noformat}
The code passed to eventually never returned normally. Attempted 40 times over 503.217543 milliseconds. Last failure message: tsm.isZombie was false.

Error message:
org.scalatest.exceptions.TestFailedDueToTimeoutException: The code passed to eventually never returned normally. Attempted 40 times over 503.217543 milliseconds. Last failure message: tsm.isZombie was false.
      at org.scalatest.concurrent.Eventually$class.tryTryAgain$1(Eventually.scala:421)
      at org.scalatest.concurrent.Eventually$class.eventually(Eventually.scala:439)
      at org.apache.spark.scheduler.TaskSchedulerImplSuite.eventually(TaskSchedulerImplSuite.scala:44)
      at org.scalatest.concurrent.Eventually$class.eventually(Eventually.scala:337)
      at org.apache.spark.scheduler.TaskSchedulerImplSuite.eventually(TaskSchedulerImplSuite.scala:44)
      at org.apache.spark.scheduler.TaskSchedulerImplSuite$$anonfun$18.apply(TaskSchedulerImplSuite.scala:543)
      at org.apache.spark.scheduler.TaskSchedulerImplSuite$$anonfun$18.apply(TaskSchedulerImplSuite.scala:511)
{noformat}

There's a race condition in the test that can cause these different failures.



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