@Test public void testTtlString() throws Exception { ColumnPrefixDistributedRowLock<String> lock = new ColumnPrefixDistributedRowLock<String>(keyspace, LOCK_CF_STRING, "testTtl") .withTtl(2) .withConsistencyLevel(ConsistencyLevel.CL_ONE) .expireLockAfter(1, TimeUnit.SECONDS); try { lock.acquire(); Assert.assertEquals(1, lock.readLockColumns().size()); Thread.sleep(3000); Assert.assertEquals(0, lock.readLockColumns().size()); } catch (Exception e) { Assert.fail(e.getMessage()); } finally { lock.release(); } Assert.assertEquals(0, lock.readLockColumns().size()); }