<div dir="ltr">Hello,<br><br>I am happy to announce release 0.22.0 of Hawkular Metrics. This release is anchored by performance and compression enhancements.
<p>Here is a list of major changes:</p>
<ul><li>
<strong>Compression</strong>
<ul><li>Prevent OutOfMemoryError on Cassandra when compression job runs (<a href="https://issues.jboss.org/browse/HWKMETRICS-520">HWKMETRICS-520</a>)</li><li>Avoid compression job executing in a loop when execution falls behind (<a href="https://issues.jboss.org/browse/HWKMETRICS-536">HWKMETRICS-536</a>)</li><li>Avoid future executions of compression job from not running if Cassandra is shutdown abruptly (<a href="https://issues.jboss.org/browse/HWKMETRICS-518">HWKMETRICS-518</a>)</li><li>Added a flag to disable the compression job; the data will be persisted and retrieved without compression (<a href="https://issues.jboss.org/browse/HWKMETRICS-524">HWKMETRICS-524</a>)</li><li>The block size for compression is now configurable (<a href="https://issues.jboss.org/browse/HWKMETRICS-545">HWKMETRICS-545</a>)</li><li>The compression job can now be triggered manually (<a href="https://issues.jboss.org/browse/HWKMETRICS-502">HWKMETRICS-502</a>)</li></ul>
</li><li>
<strong>Server Clustering</strong>
<ul><li>The external alerter is now cluster-aware and will not process the same request on multiple nodes (<a href="https://issues.jboss.org/browse/HWKMETRICS-515">HWKMETRICS-515</a>)</li><li>Schema updates are correctly applied when multiple servers are started at the same time (<a href="https://issues.jboss.org/browse/HWKMETRICS-514">HWKMETRICS-514</a>)</li><li>Added Cassandra connection information to the status page and
created an admin version with detailed Cassandra cluster information (<a href="https://issues.jboss.org/browse/HWKMETRICS-526">HWKMETRICS-526</a>)</li><li>Internal system metrics are now persisted under <code>admin</code> tenant; this gives a good overview of the current system load (<a href="https://issues.jboss.org/browse/HWKMETRICS-550">HWKMETRICS-550</a>)</li></ul>
</li><li>
<strong>REST API</strong>
<ul><li>Added endpoint to allow fetching of available tag names (<a href="https://issues.jboss.org/browse/HWKMETRICS-532">HWKMETRICS-532</a>)</li><li>Fixed an issue where the API would report an internal server error on invalid query (<a href="https://issues.jboss.org/browse/HWKMETRICS-543">HWKMETRICS-543</a>)</li></ul>
</li><li>
<strong>Hawkular Alerting - Updates</strong>
<ul><li>End to end performance enhancements</li><li>Major improvements to <a href="http://www.hawkular.org/docs/rest/rest-alerts.html">REST API documentation</a>
</li><li>New cross-tenant endpoints for for fetching alerts </li><li>Email and webhook action plugins are now packaged in the main distribution (<a href="https://issues.jboss.org/browse/HWKMETRICS-552">HWKMETRICS-552</a>)</li></ul>
</li></ul>
<p><strong>Hawkular Alerting - included</strong></p>
<ul><li>Version <a href="https://issues.jboss.org/projects/HWKALERTS/versions/12331986">1.4.0</a>
</li><li>Project details and repository: <a href="https://github.com/hawkular/hawkular-alerts">Github</a>
</li><li>Documentation: <a href="http://www.hawkular.org/docs/rest/rest-alerts.html">REST API Documentation</a>, <a href="https://github.com/hawkular/hawkular-alerts/tree/master/examples">Examples</a>,
<a href="http://www.hawkular.org/community/docs/developer-guide/alerts.html">Developer Guide</a>
</li></ul>
<p><strong>Hawkular Metrics Clients</strong></p>
<ul><li>Python: <a href="https://github.com/hawkular/hawkular-client-python">https://github.com/hawkular/hawkular-client-python</a>
</li><li>Go: <a href="https://github.com/hawkular/hawkular-client-go">https://github.com/hawkular/hawkular-client-go</a>
</li><li>Ruby: <a href="https://github.com/hawkular/hawkular-client-ruby">https://github.com/hawkular/hawkular-client-ruby</a>
</li><li>Java: <a href="https://github.com/hawkular/hawkular-client-java">https://github.com/hawkular/hawkular-client-java</a>
</li></ul><p><strong><br></strong></p><p><strong>Release Links</strong></p><p>Github Release: <a href="https://github.com/hawkular/hawkular-metrics/releases/tag/0.22.0" target="_blank">https://github.com/hawkular/hawkular-metrics/releases/tag/0.22.0</a></p><p>JBoss Nexus Maven artifacts:<br>
<a href="http://origin-repository.jboss.org/nexus/content/repositories/public/org/hawkular/metrics/" target="_blank">http://origin-repository.jboss<wbr>.org/nexus/content/repositorie<wbr>s/public/org/hawkular/metrics/</a></p>
<p>Jira release tracker:<br>
<a href="https://issues.jboss.org/projects/HWKMETRICS/versions/12332012" target="_blank">https://issues.jboss.org/projects/HWKMETRICS/versions/12332012</a></p><br>A big "Thank you" goes to John Sanda, Matt Wringe, Michael Burman,
Joel Takvorian, Jay Shaughnessy, Lucas Ponce, and Heiko Rupp for their
project contributions.
<br><br><br clear="all">Thank you,<br>Stefan Negrea<br><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><br></div></div></div></div></div>
</div>