Dongjoon Hyun created SPARK-32442:
-------------------------------------
Summary: Fix TaskSetManagerSuite by hiding
`org.apache.spark.FakeSchedulerBackend`
Key: SPARK-32442
URL: https://issues.apache.org/jira/browse/SPARK-32442
Project: Spark
Issue Type: Sub-task
Components: Spark Core, Tests
Affects Versions: 3.1.0
Reporter: Dongjoon Hyun
There exists two FakeSchedulerBackend.
{code}
$ git grep "class FakeSchedulerBackend"
core/src/test/scala/org/apache/spark/HeartbeatReceiverSuite.scala:private class
FakeSchedulerBackend(
core/src/test/scala/org/apache/spark/scheduler/TaskSchedulerImplSuite.scala:class
FakeSchedulerBackend extends SchedulerBackend {
{code}
Although `TaskSetManagerSuite` is inside `org.apache.spark.scheduler` package,
`import org.apache.spark._` makes Scala 2.13 confused and causes 4 UT failures.
{code}
$ build/mvn test -pl core --am -Pscala-2.13 -Dtest=none
-DwildcardSuites=org.apache.spark.scheduler.TaskSetManagerSuite
...
Tests: succeeded 48, failed 4, canceled 0, ignored 0, pending 0
*** 4 TESTS FAILED ***
{code}
This issue aims to fix that by hiding that.
{code}
import org.apache.spark.{FakeSchedulerBackend => _, _}
{code}
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