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<p>To use this Apache Druid extension, <a href="/docs/latest/development/extensions.html#loading-extensions">include</a> <code>statsd-emitter</code> in the extensions load list.</p>
<h2><a class="anchor" aria-hidden="true" id="introduction"></a><a href="#introduction" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Introduction</h2>
<p>This extension emits druid metrics to a StatsD server.
(<a href="https://github.com/etsy/statsd">https://github.com/etsy/statsd</a>)
(<a href="https://github.com/armon/statsite">https://github.com/armon/statsite</a>)</p>
<h2><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Configuration</h2>
<p>All the configuration parameters for the StatsD emitter are under <code>druid.emitter.statsd</code>.</p>
<table>
<thead>
<tr><th>property</th><th>description</th><th>required?</th><th>default</th></tr>
</thead>
<tbody>
<tr><td><code>druid.emitter.statsd.hostname</code></td><td>The hostname of the StatsD server.</td><td>yes</td><td>none</td></tr>
<tr><td><code>druid.emitter.statsd.port</code></td><td>The port of the StatsD server.</td><td>yes</td><td>none</td></tr>
<tr><td><code>druid.emitter.statsd.prefix</code></td><td>Optional metric name prefix.</td><td>no</td><td>&quot;&quot;</td></tr>
<tr><td><code>druid.emitter.statsd.separator</code></td><td>Metric name separator</td><td>no</td><td>.</td></tr>
<tr><td><code>druid.emitter.statsd.includeHost</code></td><td>Flag to include the hostname as part of the metric name.</td><td>no</td><td>false</td></tr>
<tr><td><code>druid.emitter.statsd.dimensionMapPath</code></td><td>JSON file defining the StatsD type, and desired dimensions for every Druid metric</td><td>no</td><td>Default mapping provided. See below.</td></tr>
<tr><td><code>druid.emitter.statsd.blankHolder</code></td><td>The blank character replacement as StatsD does not support path with blank character</td><td>no</td><td>&quot;-&quot;</td></tr>
<tr><td><code>druid.emitter.statsd.dogstatsd</code></td><td>Flag to enable <a href="https://docs.datadoghq.com/developers/dogstatsd/">DogStatsD</a> support. Causes dimensions to be included as tags, not as a part of the metric name. <code>convertRange</code> fields will be ignored.</td><td>no</td><td>false</td></tr>
<tr><td><code>druid.emitter.statsd.dogstatsdConstantTags</code></td><td>If <code>druid.emitter.statsd.dogstatsd</code> is true, the tags in the JSON list of strings will be sent with every event.</td><td>no</td><td>[]</td></tr>
<tr><td><code>druid.emitter.statsd.dogstatsdServiceAsTag</code></td><td>If <code>druid.emitter.statsd.dogstatsd</code> and <code>druid.emitter.statsd.dogstatsdServiceAsTag</code> are true, druid service (e.g. <code>druid/broker</code>, <code>druid/coordinator</code>, etc) is reported as a tag (e.g. <code>druid_service:druid/broker</code>) instead of being included in metric name (e.g. <code>druid.broker.query.time</code>) and <code>druid</code> is used as metric prefix (e.g. <code>druid.query.time</code>).</td><td>no</td><td>false</td></tr>
<tr><td><code>druid.emitter.statsd.dogstatsdEvents</code></td><td>If <code>druid.emitter.statsd.dogstatsd</code> and <code>druid.emitter.statsd.dogstatsdEvents</code> are true, <a href="/docs/latest/operations/alerts.html">Alert events</a> are reported to DogStatsD.</td><td>no</td><td>false</td></tr>
</tbody>
</table>
<h3><a class="anchor" aria-hidden="true" id="druid-to-statsd-event-converter"></a><a href="#druid-to-statsd-event-converter" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Druid to StatsD Event Converter</h3>
<p>Each metric sent to StatsD must specify a type, one of <code>[timer, counter, guage]</code>. StatsD Emitter expects this mapping to
be provided as a JSON file.  Additionally, this mapping specifies which dimensions should be included for each metric.
StatsD expects that metric values be integers.  Druid emits some metrics with values between the range 0 and 1. To accommodate these metrics they are converted
into the range 0 to 100.  This conversion can be enabled by setting the optional &quot;convertRange&quot; field true in the JSON mapping file.
If the user does not specify their own JSON file, a default mapping is used.  All
metrics are expected to be mapped. Metrics which are not mapped will log an error.
StatsD metric path is organized using the following schema:
<code>&lt;druid metric name&gt; : { &quot;dimensions&quot; : &lt;dimension list&gt;, &quot;type&quot; : &lt;StatsD type&gt;, &quot;convertRange&quot; : true/false}</code>
e.g.
<code>query/time&quot; : { &quot;dimensions&quot; : [&quot;dataSource&quot;, &quot;type&quot;], &quot;type&quot; : &quot;timer&quot;}</code></p>
<p>For metrics which are emitted from multiple services with different dimensions, the metric name is prefixed with
the service name.
e.g.
<code>&quot;coordinator-segment/count&quot; : { &quot;dimensions&quot; : [&quot;dataSource&quot;], &quot;type&quot; : &quot;gauge&quot; }, &quot;historical-segment/count&quot; : { &quot;dimensions&quot; : [&quot;dataSource&quot;, &quot;tier&quot;, &quot;priority&quot;], &quot;type&quot; : &quot;gauge&quot; }</code></p>
<p>For most use-cases, the default mapping is sufficient.</p>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/development/extensions-contrib/sqlserver.html"><span class="arrow-prev">← </span><span>Microsoft SQLServer</span></a><a class="docs-next button" href="/docs/latest/development/extensions-contrib/tdigestsketch-quantiles.html"><span>T-Digest Quantiles Sketch module</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#introduction">Introduction</a></li><li><a href="#configuration">Configuration</a><ul class="toc-headings"><li><a href="#druid-to-statsd-event-converter">Druid to StatsD Event Converter</a></li></ul></li></ul></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/technology">Technology</a> · <a href="/use-cases">Use Cases</a> · <a href="/druid-powered">Powered by Druid</a> · <a href="/docs/latest/">Docs</a> · <a href="/community/">Community</a> · <a href="/downloads.html">Download</a> · <a href="/faq">FAQ</a></p></div><div class="text-center"><a title="Join the user group" href="https://groups.google.com/forum/#!forum/druid-user" target="_blank"><span class="fa fa-comments"></span></a> · <a title="Follow Druid" href="https://twitter.com/druidio" target="_blank"><span class="fab fa-twitter"></span></a> · <a title="Download via Apache" href="https://www.apache.org/dyn/closer.cgi?path=/incubator/druid/{{ site.druid_versions[0].versions[0].version }}/apache-druid-{{ site.druid_versions[0].versions[0].version }}-bin.tar.gz" target="_blank"><span class="fas fa-feather"></span></a> · <a title="GitHub" href="https://github.com/apache/druid" target="_blank"><span class="fab fa-github"></span></a></div><div class="text-center license">Copyright © 2022 <a href="https://www.apache.org/" target="_blank">Apache Software Foundation</a>.<br/>Except where otherwise noted, licensed under <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA 4.0</a>.<br/>Apache Druid, Druid, and the Druid logo are either registered trademarks or trademarks of The Apache Software Foundation in the United States and other countries.</div></div></footer></div><script type="text/javascript" src="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.js"></script><script>
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