@Test
public void testTransactionAtomicity_whenMultiMapGetIsUsed_withTransaction()
throws InterruptedException {
final HazelcastInstance hz = Hazelcast.newHazelcastInstance(createConfigWithDummyTxService());
final String name = HazelcastTestSupport.generateRandomString(5);
Thread producerThread = startProducerThread(hz, name);
try {
IQueue<String> q = hz.getQueue(name);
for (int i = 0; i < 1000; i++) {
String id = q.poll();
if (id != null) {
TransactionContext tx = hz.newTransactionContext();
try {
tx.beginTransaction();
TransactionalMultiMap<Object, Object> multiMap = tx.getMultiMap(name);
Collection<Object> values = multiMap.get(id);
assertFalse(values.isEmpty());
multiMap.remove(id);
tx.commitTransaction();
} catch (TransactionException e) {
tx.rollbackTransaction();
e.printStackTrace();
}
} else {
LockSupport.parkNanos(100);
}
}
} finally {
stopProducerThread(producerThread);
}
}
@Test
public void testDeadLockFromClientInstance() throws InterruptedException {
final String mapName = randomString();
final String key = "key";
final AtomicBoolean running = new AtomicBoolean(true);
Thread t =
new Thread() {
public void run() {
while (running.get()) {
client.getMap(mapName).get(key);
}
}
};
t.start();
CBAuthorisation cb = new CBAuthorisation();
cb.setAmount(15000);
try {
TransactionContext context = client.newTransactionContext();
context.beginTransaction();
TransactionalMap mapTransaction = context.getMap(mapName);
// init data
mapTransaction.put(key, cb);
// start test deadlock, 3 set and concurrent, get deadlock
cb.setAmount(12000);
mapTransaction.set(key, cb);
cb.setAmount(10000);
mapTransaction.set(key, cb);
cb.setAmount(900);
mapTransaction.set(key, cb);
cb.setAmount(800);
mapTransaction.set(key, cb);
cb.setAmount(700);
mapTransaction.set(key, cb);
context.commitTransaction();
} catch (TransactionException e) {
e.printStackTrace();
fail();
}
running.set(false);
t.join();
}