public void testDroppingStatesAtCapacity() {
List<ClusterState> states =
randomStates(scaledRandomIntBetween(10, 300), "master1", "master2", "master3", "master4");
Collections.shuffle(states, random());
// insert half of the states
final int numberOfStateToDrop = states.size() / 2;
List<ClusterState> stateToDrop = states.subList(0, numberOfStateToDrop);
final int queueSize = states.size() - numberOfStateToDrop;
PendingClusterStatesQueue queue = createQueueWithStates(stateToDrop, queueSize);
List<ClusterStateContext> committedContexts = randomCommitStates(queue);
for (ClusterState state : states.subList(numberOfStateToDrop, states.size())) {
queue.addPending(state);
}
assertThat(queue.pendingClusterStates().length, equalTo(queueSize));
// check all committed states got a failure due to the drop
for (ClusterStateContext context : committedContexts) {
assertThat(((MockListener) context.listener).failure, notNullValue());
}
// all states that should have dropped are indeed dropped.
for (ClusterState state : stateToDrop) {
assertThat(queue.findState(state.stateUUID()), nullValue());
}
}
