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From Mahadev Konar <maha...@apache.org>
Subject Re: ZK quota management
Date Fri, 13 May 2011 18:10:38 GMT
Very glad to hear this!

This would be a very very very useful feature! Let us know if we can
help in any way to get this into apache ZK.


On Fri, May 13, 2011 at 1:42 AM, Toader, Sebastian
<Sebastian.Toader@morganstanley.com> wrote:
> Hi all,
> We are using ZooKeeper internally and ran into same issue where we wanted Quotas to impose
hard restrictions. We needed this primarily to protect ZooKeeper server against rogue client
applications that may cause Zk server to use up the allocated memory thus affecting other
clients as well.
> We've changed ZooKeeper's (version 3.3) code to impose hard restrictions. Currently it's
in testing. Once we are happy with how it we are planning to push changes back so it will
be available for others as well.
> One thing to note our implementation is not configurable whether to impose quota or just
warn if quota exceeded, it always enforces quotas if set on a znode.
> Best regards,
> Seb
> -----Original Message-----
> From: Mahadev Konar [mailto:mahadev@apache.org]
> Sent: Friday, May 13, 2011 12:35 AM
> To: user@zookeeper.apache.org
> Subject: Re: ZK quota management
> The current quotas doesnt really impose hard restrictions on quota. It
> would be nice to change the quotas to impose that. This shouldnt be a
> big change but again given the Multitxn patch it might be a litte more
> complicated.
> thanks
> mahadev
> On Wed, Apr 27, 2011 at 2:13 PM, Fournier, Camille F. [Tech]
> <Camille.Fournier@gs.com> wrote:
>> I was wondering if any of you used the Quotas feature in ZK in your production systems.
If so, do you find it useful? How does it affect performance?
>> Thanks,
>> Camille
> --
> thanks
> mahadev
> @mahadevkonar
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