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https://issues.apache.org/jira/browse/ZOOKEEPER-28?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12604338#action_12604338
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Andrew Kornev commented on ZOOKEEPER-28:
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Flavio, 

I'm guessing you'd want to modify the client's connection handshake protocol by 
adding the server list information to it. Please take a look at the 
prime_connection() function in zookeeper.c. This is where the handshake is 
implemented. There is a theoretical possibility in the case where the list of 
zookeeper nodes gets rather long, the send() call would be able to write the 
whole marshalled buffer to the socket, which will result in a connection 
failure (see lines 850-851 in zookeeper.c).

Also, please make sure to update the unit tests because this change will break 
some of them (for example, c\tests\TestZookeeperInit.cc).

On the server side, I'd like to make sure the server implementation is going to 
be backward compatible. In other words, the old clients should still be able to 
connect to the server.


> Incompatible client and server list detection
> ---------------------------------------------
>
>                 Key: ZOOKEEPER-28
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-28
>             Project: Zookeeper
>          Issue Type: New Feature
>          Components: c client, java client, server
>            Reporter: Patrick Hunt
>            Assignee: Andrew Kornev
>             Fix For: 3.0.0
>
>
> Moved from SourceForge to Apache.
> http://sourceforge.net/tracker/index.php?func=detail&aid=1937084&group_id=209147&atid=1008547

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