Github user maoling commented on the issue:
https://github.com/apache/zookeeper/pull/262
Hi, @asdf2014 .Thanks for your explanation! But I still have some
confusions about the question one:
look at code like this :
```
int epoch = (int)Long.rotateRight(zxid, 32);// >> 32;
long count = zxid & 0xffffffffffL;
```
it all depends on that **zxid** can not be altered(no write operation when
**zxid** has generated at the first time) in the multithread
situation,otherwise epoch and count isn't idempotent.should **zxid** be
decorated by **final**?
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