/** Test for issue #39 */ @Test public void testIsMapKeyLocked() throws InterruptedException { HazelcastClient hClient = getHazelcastClient(); final IMap map = hClient.getMap("testIsMapKeyLocked"); assertFalse(map.isLocked("key")); map.lock("key"); assertTrue(map.isLocked("key")); final CountDownLatch latch = new CountDownLatch(1); Thread thread = new Thread( new Runnable() { public void run() { assertTrue(map.isLocked("key")); try { while (map.isLocked("key")) { Thread.sleep(100); } } catch (InterruptedException e) { throw new RuntimeException(e); } latch.countDown(); } }); thread.start(); Thread.sleep(100); map.unlock("key"); assertTrue(latch.await(3, TimeUnit.SECONDS)); }