Apache9 commented on PR #7600:
URL: https://github.com/apache/hbase/pull/7600#issuecomment-3721559867
> Lgtm. Getting rid of Thread.sleep()s is good, but why do you say that
wait()/notify() is unstable?
I mean 'one time' wait/notifyAll. Usually you need to use a while loop and a
condition to do waiting, this is the javadoc for wait method in Java
```
* A thread can wake up without being notified, interrupted, or timing
out, a
* so-called <em>spurious wakeup</em>. While this will rarely occur in
practice,
* applications must guard against it by testing for the condition that
should
* have caused the thread to be awakened, and continuing to wait if the
condition
* is not satisfied. See the example below.
```
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