You can still miss a pending write on the client. Just because you read N from the ZNode doesn't mean that that's it's real value on the leader. The only way in ZooKeeper to be certain is to do a write as those always take place on the leader.
-Jordan > On May 1, 2020, at 5:51 PM, Scott Blum <dragonsi...@gmail.com> wrote: > > On Fri, May 1, 2020 at 6:00 PM David Smiley <david.w.smi...@gmail.com > <mailto:david.w.smi...@gmail.com>> wrote: > I don't think I'll use the "LastZxid" trick because we update parts of the ZK > tree with high frequency but not this one yet the Zxid would still soar > upwards. > > I don't follow.. if server A writes a node, recording the mzxid associated > with that write, and passes it along to server B, then server B just needs to > be sure its LastZxid is >= the one that server A wrote. Doesn't matter if > server B's LastZxid is the same, 10 ahead, or 1000 ahead.
