public async Task TestSequenceFixIfKeyRemoveAtServer()
{
const string theKey = "key";
await _dictionary.SetAsync(theKey, "value1");
var partitioner = ((HazelcastClient)_client).Cluster.Partitioner;
var keyData = ((HazelcastClient)_client).SerializationService.ToData(theKey);
var partitionId = partitioner.GetPartitionId(keyData.PartitionHash);
var cache = GetNearCache(_dictionary) as NearCaching.NearCache;
var metadata = cache.RepairingHandler.GetMetadata(partitionId);
await AssertEx.SucceedsEventually(() =>
{
Assert.That(metadata.Sequence, Is.EqualTo(1));
}, 2000, 200);
metadata.Sequence -= 2; //distort the sequence
await RemoveKeyAtServerAsync(_dictionary.Name, theKey);
await AssertEx.SucceedsEventually(() =>
{
Assert.That(metadata.Sequence, Is.EqualTo(2));
Assert.That(cache.Count, Is.EqualTo(0));
}, 2000, 200);
}
private async Task FillAsync()
{
for (var i = 1; i < 30; i++)
{
await _dictionary.SetAsync("key-" + i, new HazelcastJsonValue("{ \"age\": " + i + " }"));
}
}
private async Task SetTask(IHDictionary <string, string> dictionary, SemaphoreSlim started, int id)
{
var i = 0;
while (!_stop)
{
i++;
// put new value and update last state
// note: the value in the map/Near Cache is *always* larger or equal to valuePut
// assertion: valueMap >= valuePut
await dictionary.SetAsync(Key, i.ToString()).CAF();
_valuePut = i;
// ensure we have a value
if (i == 1)
{
started.Release();
}
// check if we see our last update
var valueStr = await dictionary.GetAsync(Key).CAF();
if (valueStr == null)
{
continue; // ignore nulls (?)
}
var valueInt = int.Parse(valueStr);
if (valueInt == i)
{
continue; // match = ok
}
_assertionViolationCount++;
Logger.LogWarning($"Err: set {i} but got {valueInt}.");
// maybe it needs a bit of time?
await Task.Delay(200).CAF();
// test again and stop if really lost
valueStr = await dictionary.GetAsync(Key).CAF();
valueInt = int.Parse(valueStr);
if (valueInt == i)
{
continue; // fixed
}
Logger.LogWarning($"Err: still getting {valueInt} instead of {i}.");
// maybe it needs a lot of time?
// in non-strict, we'll give it plenty
// abort all
_stop = true;
}
Logger.LogInformation($"AddOrUpdate task {id} performed {i} operations.");
}