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<h1>ZooKeeper Quota's Guide</h1>
<h3>A Guide to Deployment and Administration</h3>
<div id="front-matter">
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<ul class="minitoc">
<li>
<a href="#zookeeper_quotas">Quotas</a>
<ul class="minitoc">
<li>
<a href="#Setting+Quotas">Setting Quotas</a>
</li>
<li>
<a href="#Listing+Quotas">Listing Quotas</a>
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<a href="#Deleting+Quotas"> Deleting Quotas</a>
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<a name="zookeeper_quotas"></a>
<h2 class="h3">Quotas</h2>
<div class="section">
<p> ZooKeeper has both namespace and bytes quotas. You can use the ZooKeeperMain class to setup quotas.
	ZooKeeper prints <em>WARN</em> messages if users exceed the quota assigned to them. The messages 
	are printed in the log of the ZooKeeper. 
	</p>
<p>
<span class="codefrag computeroutput">$java -cp zookeeper.jar:src/java/lib/log4j-1.2.15.jar/conf:src/java/lib/jline-0.9.94.jar \
	 org.apache.zookeeper.ZooKeeperMain -server host:port</span>
</p>
<p> The above command gives you a command line option of using quotas.</p>
<a name="Setting+Quotas"></a>
<h3 class="h4">Setting Quotas</h3>
<p>You can use 
	 <em>setquota</em> to set a quota on a ZooKeeper node. It has an option of setting quota with
	  -n (for namespace)
	 and -b (for bytes). </p>
<p> The ZooKeeper quota are stored in ZooKeeper itself in /zookeeper/quota. To disable other people from
	changing the quota's set the ACL for /zookeeper/quota such that only admins are able to read and write to it.
	</p>
<a name="Listing+Quotas"></a>
<h3 class="h4">Listing Quotas</h3>
<p> You can use
	<em>listquota</em> to list a quota on a ZooKeeper node.
	</p>
<a name="Deleting+Quotas"></a>
<h3 class="h4"> Deleting Quotas</h3>
<p> You can use
	<em>delquota</em> to delete quota on a ZooKeeper node.
	</p>
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