Patrick Hunt commented on ZOOKEEPER-231:

@Krishna: the paths I specified are zk subtree path specs.

I should have been more clear: /app/app1 corresponds to the /app/app1 znode 
subtree w/in ZK namespace.  To take my example further you might have:


where members is storing the hosts & ports of the members of cluster1, for 
app1, etc... and leader is storing the leader node for the cluster (this is but 
one simple example).

The ZK ACLs feature could be used to lock down a particular acl id to 
particular subtree(s).

So in this case you might have acl ids for app1, app2 and app3, each only able 
to access it's particular corresponding subtree of znodes, where each of those 
trees has some associated quota.

Does that help?

> Quotas in zookeeper
> -------------------
>                 Key: ZOOKEEPER-231
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-231
>             Project: Zookeeper
>          Issue Type: New Feature
>    Affects Versions: 3.0.0
>            Reporter: Mahadev konar
>            Assignee: Mahadev konar
>             Fix For: 3.1.0
> creating quota's in zookeeper so that a runaway application does not bring 
> down the zookeeper cluster.

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