tillrohrmann commented on a change in pull request #7565: [FLINK-11400]
Linearize leadership operations in JobManagerRunner
URL: https://github.com/apache/flink/pull/7565#discussion_r251459113
##########
File path:
flink-runtime/src/test/java/org/apache/flink/runtime/jobmaster/JobManagerRunnerTest.java
##########
@@ -204,11 +211,52 @@ public void testLibraryCacheManagerRegistration() throws
Exception {
}
}
+ /**
+ * Tests that the {@link JobManagerRunner} always waits for the
previous leadership operation
+ * (granting or revoking leadership) to finish before starting a new
leadership operation.
+ */
+ @Test
+ public void testConcurrentLeadershipOperations() throws Exception {
+ final CompletableFuture<Acknowledge> suspendedFuture = new
CompletableFuture<>();
+
+ TestingJobMasterServiceFactory jobMasterServiceFactory = new
TestingJobMasterServiceFactory(
+ () -> new TestingJobMasterService(
+ "localhost",
+ e -> suspendedFuture));
+ JobManagerRunner jobManagerRunner =
createJobManagerRunner(jobMasterServiceFactory);
+
+ jobManagerRunner.start();
+
+ leaderElectionService.isLeader(UUID.randomUUID()).get();
+
+ leaderElectionService.notLeader();
Review comment:
Yes I think it would makes sense. Will add the test.
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