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Posted to dev@zookeeper.apache.org by GitBox <gi...@apache.org> on 2019/03/07 01:54:27 UTC

[GitHub] [zookeeper] asdf2014 commented on issue #262: ZOOKEEPER-2789: Reassign `ZXID` for solving 32bit overflow problem

asdf2014 commented on issue #262: ZOOKEEPER-2789: Reassign `ZXID` for solving 32bit overflow problem
URL: https://github.com/apache/zookeeper/pull/262#issuecomment-470351352
 
 
   Hi, @maoling. Thank you for your comments.  As you said, if we cannot carry the version of server, it will be too difficult to maintain backward compatibility. The reversion in Etcd is to implement the MVCC feature, which seems to be equivalent to the Zookeeper counter, not the entire ZXID. If we consider that design, then maybe we should use more 64bits, convert ZXID from `epoch(32bits)+counter(32bits)` to `epoch(64bits)+main_counter(32bits)+sub_counter(32bits)`. What do you think?

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