coderzc commented on PR #18499:
URL: https://github.com/apache/pulsar/pull/18499#issuecomment-1318153620
> The code above works well with the following outputs:
You can try the following code, and will not be able to work well:
```java
final var executor = Executors.newSingleThreadExecutor();
executor.execute(() -> {
final var latch = new CountDownLatch(1);
executor.execute(() -> {
System.out.println(Thread.currentThread().getName() + " 1");
latch.countDown();
});
latch.await();
System.out.println(Thread.currentThread().getName() + " 0");
});
executor.shutdown();
```
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