FYI, Ben has been working on Netty integration with ZooKeeper. One of the benefits of this is it provides encryption and certificate based connection auth - which would be a great way (cert) to solve some of the security issues highlighted in 107. So the pieces are there, interest is there, support is there, as Henry mentioned we need to find the resources.


Henry Robinson wrote:
Hi -

Yes, I'm still interested in this JIRA but it's a significant change to ZK
which would be best suited for probably the 4.0 release. I have a rough
implementation that 'works' but still leaves some issues unresolved. I don't
have a great deal of time for this issue at the moment though, which is why
it's stalled a bit - other ZK issues are more pressing. This would be a
really great project for anyone looking for a meaty distributed systems
project; I'm happy to offer guidance and advice if anyone wants to take it


On 18 February 2010 09:58, Patrick Hunt <> wrote:

There are ways to "dynamically" update the cluster membership today,
granted while they are dynamic they are not dynamic in the sense of 107: (see item 6)

107 is still pending. Henry was interested to implement this, I'm not sure
his current status. Henry? I think this is a good feature to add, but it
brings up a number of issues that we need to work through. Given that most
ppl rarely change cluster membership, and the fact that there are options
available today, there hasn't been a lot of demand for this.


Hariharan Subramanian wrote:

Dear Zookeeper community,

I would like to know the status of issue ZOOKEEPER-107  (Allow dynamic
changes to server cluster membership) which is assigned to Henry Robinson

Is this the right forum to ask this question or should I post an update to
the bug report?

-- Hari

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