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https://issues.apache.org/jira/browse/ZOOKEEPER-762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12916168#action_12916168
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Thomas Koch commented on ZOOKEEPER-762:
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There are many changes in the java client on the horizont ( ZOOKEEPER-835 ) so
if you implement this now, your patch will most likely not apply afterwards.
> Allow dynamic addition/removal of server nodes in the client API
> ----------------------------------------------------------------
>
> Key: ZOOKEEPER-762
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-762
> Project: Zookeeper
> Issue Type: Sub-task
> Components: c client, java client
> Reporter: Dave Wright
> Priority: Minor
> Attachments: 762.diff
>
>
> Currently the list of zookeeper servers needs to be provided to the client
> APIs at construction time, and cannot be changed without a complete
> shutdown/restart of the client API. However, there are scenarios that require
> the server list to be updated, such as removal or addition of a ZK cluster
> node, and it would be nice if the list could be updated via a simple API call.
> The general approach (in the Java client) would be to
> "RemoveServer()/AddServer()" functions for Zookeeper that calls down to
> ClientCnxn, where they are just maintained in a list. Of course if
> the server being removed is the one currently connected, we'd need to
> disconnect, but a simple call to disconnect() seems like it would resolve
> that and trigger the automatic re-connection logic.
> An equivalent change could be made in the C code.
> This change would also make dynamic cluster membership in ZOOKEEPER-107
> easier to implement.
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