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https://issues.apache.org/jira/browse/ZOOKEEPER-555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12766154#action_12766154
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Patrick Hunt commented on ZOOKEEPER-555:
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That sounds reasonable.
Alternately, might you use the sequence numbers themselves to ascertain the
"version"?
I was thinking something like: you have a child list with seq numbers
version = x,y where x is count, y is last seq number
1 2 3 => version is 3,3
znode 2 drops
1 3 => version is 2,3
a new znode is added
1 3 4 => version is 3,4
so the server would see 3,3 2,3 3,3 2,3 in your example
x,y where x can only decrease as time increases unless y increases. therefore
the second 3,3 2,3 would be ignored (ie old version)
> Add stat information to GetChildrenResponse
> -------------------------------------------
>
> Key: ZOOKEEPER-555
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-555
> Project: Zookeeper
> Issue Type: Improvement
> Components: c client, contrib-bindings, java client, server
> Affects Versions: 3.3.0
> Reporter: Árni Már Jónsson
> Assignee: Árni Már Jónsson
> Priority: Minor
> Fix For: 3.3.0
>
> Attachments: getchildren_stat.patch
>
>
> GetChildren() is the only non-create/delete API which does not include the
> node stat information. I propose that the definition of GetChildren() should
> be:
> class GetChildrenResponse {
> vector<ustring> children;
> org.apache.zookeeper.data.Stat stat;
> }
> There is a trivial fix to the server (FinalRequestProcessor.java): rsp = new
> GetChildrenResponse(children, stat);
> And something similar to the client library.
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