public void run () {
                    try {
                        barrier.await();
                        logLikeCrazy();
                    }
                    catch (BrokenBarrierException | InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                }
This test was made in order to look for a race condition
which occurs when file rotation in the VespaLogHandler
occurs concurrently (which it should never do).
vespalog/src/test/java/com/yahoo/log/VespaLogHandlerTestCase.java