belliottsmith commented on code in PR #65:
URL: https://github.com/apache/cassandra-accord/pull/65#discussion_r1443380467
##########
accord-core/src/test/java/accord/burn/BurnTest.java:
##########
@@ -217,21 +254,41 @@ static void burn(RandomSource random, TopologyFactory
topologyFactory, List<Id>
.asLongSupplier(forked);
};
- Verifier verifier = createVerifier(keyCount);
- SimulatedDelayedExecutorService globalExecutor = new
SimulatedDelayedExecutorService(queue, null);
-
+ SimulatedDelayedExecutorService globalExecutor = new
SimulatedDelayedExecutorService(queue, new ListAgent(1000L, failures::add,
retryBootstrap, (i1, i2) -> {
+ throw new IllegalAccessError("Global executor should enver get a
stale event");
+ }));
+ Int2ObjectHashMap<Verifier> validators = new Int2ObjectHashMap<>();
Function<CommandStore, AsyncExecutor> executor = ignore ->
globalExecutor;
MessageListener listener = MessageListener.get();
- Packet[] requests = toArray(generate(random, listener, executor,
clients, nodes, keyCount, operations), Packet[]::new);
+ if (keyCount > ((long) HASH_RANGE_END - (long) HASH_RANGE_START + 1L))
+ throw new AssertionError(String.format("Attempted to create %d
keys which is larger than the range (%d, %d]", keyCount, HASH_RANGE_START,
HASH_RANGE_END));
+ int[] keys = new int[keyCount];
+ {
+ IntHashSet seen = new IntHashSet();
+ for (int i = 0; i < keyCount; i++)
+ {
+ int hash;
+ do
+ {
+ // start is exclusive, and end is inclusive; which is the
oposite of nextInt, so +1 to account for this
+ hash = 1 + random.nextInt(HASH_RANGE_START,
HASH_RANGE_END);
+ }
+ while (!seen.add(hash));
+ keys[i] = CRCUtils.reverseCRC32LittleEnding(hash);
Review Comment:
I don't think we need to use the same hashing behaviour between tests
though? It would be nicer to support hash collisions IMO, as this tests
additional functionality. Though we could force collisions if we wanted as
well, by reducing the hash range rather than hard coding it.
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