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https://issues.apache.org/jira/browse/ZOOKEEPER-231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12666937#action_12666937
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Flavio Paiva Junqueira commented on ZOOKEEPER-231:
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This might be a naive question, but what happens if I create a znode with x
bytes, and I try to set a quota for "x' < x"? My guess is that the setQuota
operation will fail. If this is correct, then the semantics is a little awkward
because the service doesn't allow me to set a quota for a given znode that
might be using too much space.
Along the same lines, why not enabling to set quotas for nodes that do not
exist? Because the create call enables a client to add data to a new node, it
might be desirable to set a quota before creating the node.
I was also wondering about performance. Do you have an idea if this quota
scheme will affect our throughput performance?
> 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
>
> Attachments: ZOOKEEPER-231.patch, ZOOKEEPER-231.patch,
> ZOOKEEPER-231.patch, ZOOKEEPER-231.patch, ZOOKEEPER-231.patch,
> ZOOKEEPER-231.patch
>
>
> creating quota's in zookeeper so that a runaway application does not bring
> down the zookeeper cluster.
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