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Fix up ClusterServiceIT #90397

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merged 1 commit into from
Sep 27, 2022
Merged

Fix up ClusterServiceIT #90397

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70 changes: 39 additions & 31 deletions server/src/internalClusterTest/java/org/elasticsearch/cluster/service/ClusterServiceIT.java
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Original file line number Diff line number Diff line change
Expand Up @@ -384,7 +384,7 @@ public void clusterStateProcessed(ClusterState oldState, ClusterState newState)
public ClusterState execute(ClusterState currentState) {
invoked3.countDown();
try {
block2.await();
assertTrue(block2.await(10, TimeUnit.SECONDS));
} catch (InterruptedException e) {
fail();
}
Expand All @@ -397,40 +397,48 @@ public void onFailure(Exception e) {
fail();
}
});
invoked3.await();

for (int i = 2; i <= 5; i++) {
clusterService.submitUnbatchedStateUpdateTask(Integer.toString(i), new ClusterStateUpdateTask() {
@Override
public ClusterState execute(ClusterState currentState) {
return currentState;
}
assertTrue(invoked3.await(10, TimeUnit.SECONDS));

try {
for (int i = 2; i <= 5; i++) {
clusterService.submitUnbatchedStateUpdateTask(Integer.toString(i), new ClusterStateUpdateTask() {
@Override
public ClusterState execute(ClusterState currentState) {
return currentState;
}

@Override
public void onFailure(Exception e) {
fail();
}
});
}

@Override
public void onFailure(Exception e) {
fail();
}
});
}
Thread.sleep(100);
final var startNanoTime = System.nanoTime();
while (TimeUnit.MILLISECONDS.convert(System.nanoTime() - startNanoTime, TimeUnit.NANOSECONDS) <= 0) {
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This looks weird to me. Does this mean that you wait at least for 1ms to have passed? And if not, you then wait for 100ms (which defeats the purpose of the while loop -- except for rare cases where the sleep is interrupted within 1ms)?

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Ah re-reading the PR description seems to clarify this now. Indeed you want to ensure that it waits at least 1ms. Couldn't we better though try-catch that thread.sleep for InterruptedException?

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I encountered a test failure where even the existing 100ms sleep didn't result in System.nanoTime() returning a newer time.

I don't think we need to catch an InterruptedException here, we can just fail the test in that case and let the test runner work out what to do with the interrupt.

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Wow, that seems like a nasty bug. I see, thanks for explaining.

// noinspection BusyWait
Thread.sleep(100);
}

pendingClusterTasks = clusterService.getMasterService().pendingTasks();
assertThat(pendingClusterTasks.size(), greaterThanOrEqualTo(5));
controlSources = new HashSet<>(Arrays.asList("1", "2", "3", "4", "5"));
for (PendingClusterTask task : pendingClusterTasks) {
controlSources.remove(task.getSource().string());
}
assertTrue(controlSources.isEmpty());
pendingClusterTasks = clusterService.getMasterService().pendingTasks();
assertThat(pendingClusterTasks.size(), greaterThanOrEqualTo(5));
controlSources = new HashSet<>(Arrays.asList("1", "2", "3", "4", "5"));
for (PendingClusterTask task : pendingClusterTasks) {
controlSources.remove(task.getSource().string());
}
assertTrue(controlSources.isEmpty());

response = internalCluster().coordOnlyNodeClient().admin().cluster().preparePendingClusterTasks().get();
assertThat(response.pendingTasks().size(), greaterThanOrEqualTo(5));
controlSources = new HashSet<>(Arrays.asList("1", "2", "3", "4", "5"));
for (PendingClusterTask task : response) {
if (controlSources.remove(task.getSource().string())) {
assertThat(task.getTimeInQueueInMillis(), greaterThan(0L));
response = internalCluster().coordOnlyNodeClient().admin().cluster().preparePendingClusterTasks().get();
assertThat(response.pendingTasks().size(), greaterThanOrEqualTo(5));
controlSources = new HashSet<>(Arrays.asList("1", "2", "3", "4", "5"));
for (PendingClusterTask task : response) {
if (controlSources.remove(task.getSource().string())) {
assertThat(task.getTimeInQueueInMillis(), greaterThan(0L));
}
}
assertTrue(controlSources.isEmpty());
} finally {
block2.countDown();
}
assertTrue(controlSources.isEmpty());
block2.countDown();
}
}