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| <h1>Apache Cassandra Changelog #2</h1> |
| <h3>December 01, 2020 | The Apache Cassandra Community</h3> |
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| <a href="/_/blog.html">« Back to the Apache Cassandra Blog</a> |
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| <img src="../_images/blog/changelog_header.jpg" alt="Apache Cassandra Changelog"> |
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| <div class="paragraph"> |
| <p>Our monthly roundup of key activities and knowledge to keep the community informed.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="release-notes"><a class="anchor" href="#release-notes"></a>Release Notes</h2> |
| <div class="sectionbody"> |
| <div class="sect2"> |
| <h3 id="released"><a class="anchor" href="#released"></a>Released</h3> |
| <div class="paragraph"> |
| <p>Apache #Cassandra 4.0-beta3, 3.11.9, 3.0.23, and 2.2.19 were released on November 4 and are <a href="../download.html" class="page" target="_blank" rel="noopener">in the repositories</a>. Please pay attention to release notes and let the community know if you encounter problems.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Join the Cassandra <a href="../community.html#discussions" class="page">mailing list</a> to stay updated.</p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="changed"><a class="anchor" href="#changed"></a>Changed</h3> |
| <div class="paragraph"> |
| <p>Cassandra 4.0 is progressing toward GA. There are 1,390 total tickets and remaining tickets represent 5.5% of total scope. Read the <a href="https://lists.apache.org/thread.html/r9c6cc19f67d3259e64abbe2b960b8914476d9bfa2463d57c6d5cc44b%40%3Cdev.cassandra.apache.org%3E" target="_blank" rel="noopener">full summary</a> shared to the dev mailing list and take a look at the <a href="https://issues.apache.org/jira/secure/RapidBoard.jspa?rapidView=355&quickFilter=1661&quickFilter=1658" target="_blank" rel="noopener">open tickets</a> that need reviewers.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Cassandra 4.0 will be dropping support for older distributions of CentOS 5, Debian 4, and Ubuntu 7.10. <a href="https://lists.apache.org/thread.html/r513c507ef19a8524ad5389e548f3d5bbfeb9e7747f3ae4c57ec27329%40%3Cdev.cassandra.apache.org%3E" target="_blank" rel="noopener">Learn more</a>.</p> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="community-notes"><a class="anchor" href="#community-notes"></a>Community Notes</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p><em>Updates on Cassandra Enhancement Proposals (CEPs), how to contribute, and other community activities.</em></p> |
| </div> |
| <div class="sect2"> |
| <h3 id="added"><a class="anchor" href="#added"></a>Added</h3> |
| <div class="paragraph"> |
| <p>The community weighed options to address reads inconsistencies for Compact Storage as noted in ticket <a href="https://issues.apache.org/jira/browse/CASSANDRA-16217" target="_blank" rel="noopener">CASSANDRA-16217</a> (committed). The conversation continues in ticket <a href="https://issues.apache.org/jira/browse/CASSANDRA-16226" target="_blank" rel="noopener">CASSANDRA-16226</a> with the aim of ensuring there are no huge performance regressions for common queries when you upgrade from 2.x to 3.0 with Compact Storage tables or drop it from a table on 3.0+.</p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="added-2"><a class="anchor" href="#added-2"></a>Added</h3> |
| <div class="paragraph"> |
| <p><a href="https://issues.apache.org/jira/browse/CASSANDRA-16222" target="_blank" rel="noopener">CASSANDRA-16222</a> is a Spark library that can compact and read raw Cassandra SSTables into SparkSQL. By reading the sstables directly from a snapshot directory, one can achieve high performance with minimal impact to a production cluster. It was used to successfully export a 32TB Cassandra table (46bn CQL rows) to HDFS in Parquet format in around 70 minutes, a 20x improvement on previous solutions.</p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="changed-2"><a class="anchor" href="#changed-2"></a>Changed</h3> |
| <div class="paragraph"> |
| <p>Great news for <a href="https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-2+Kubernetes+Operator" target="_blank" rel="noopener">CEP-2: Kubernetes Operator</a>, the community has agreed to <a href="https://lists.apache.org/thread.html/r9e1ff94d7b35cfc663bfa72d4ed3767e963e890f9e1199bfdb96bff0%40%3Cdev.cassandra.apache.org%3E" target="_blank" rel="noopener">create a community-based operator</a> by merging the cass-operator and CassKop. The work being done can be viewed on GitHub <a href="https://github.com/datastax/cass-operator" target="_blank" rel="noopener">here</a>.</p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="released-2"><a class="anchor" href="#released-2"></a>Released</h3> |
| <div class="paragraph"> |
| <p>The Reaper community <a href="https://thelastpickle.com/blog/2020/10/26/reaper-2_1-released-with-astra-support.html" target="_blank" rel="noopener">announced v2.1</a> of its tool that schedules and orchestrates repairs of Apache Cassandra clusters. Read the <a href="http://cassandra-reaper.io/docs/" target="_blank" rel="noopener">docs</a>.</p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="released-3"><a class="anchor" href="#released-3"></a>Released</h3> |
| <div class="paragraph"> |
| <p>Apache Cassandra 4.0-beta-1 was <a href="https://lists.apache.org/thread.html/r040f39dcc038d607c0cc36731150ce8ecb67d7399304db97e7f8b38b%40%3Cuser.cassandra.apache.org%3E" target="_blank" rel="noopener">released on FreeBSD</a>.</p> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="user-space"><a class="anchor" href="#user-space"></a>User Space</h2> |
| <div class="sectionbody"> |
| <div class="sect2"> |
| <h3 id="netflix"><a class="anchor" href="#netflix"></a>Netflix</h3> |
| <div class="paragraph"> |
| <p>“With these optimized Cassandra clusters in place, it now costs us 71% less to operate clusters and we could store 35x more data than our previous configuration.” - <a href="https://netflixtechblog.com/building-netflixs-distributed-tracing-infrastructure-bb856c319304" target="_blank" rel="noopener">Maulik Pandey</a></p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="yelp"><a class="anchor" href="#yelp"></a>Yelp</h3> |
| <div class="paragraph"> |
| <p>“Cassandra is a distributed wide-column NoSQL datastore and is used at Yelp for both primary and derived data. Yelp’s infrastructure for Cassandra has been deployed on AWS EC2 and ASG (Autoscaling Group) for a while now. Each Cassandra cluster in production spans multiple AWS regions.” - <a href="https://engineeringblog.yelp.com/2020/11/orchestrating-cassandra-on-kubernetes-with-operators.html" target="_blank" rel="noopener">Raghavendra D Prabhu</a></p> |
| </div> |
| <div class="paragraph"> |
| <p><em>Do you have a Cassandra case study to share? Email <a href="mailto:cassandra@constantia.io">cassandra@constantia.io</a></em>.</p> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="in-the-news"><a class="anchor" href="#in-the-news"></a>In the News</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>DevPro Journal: <a href="https://www.devprojournal.com/technology-trends/open-source/whats-included-in-the-cassandra-4-0-release/" target="_blank" rel="noopener">What’s included in the Cassandra 4.0 Release?</a></p> |
| </div> |
| <div class="paragraph"> |
| <p>JAXenter: <a href="https://jaxenter.com/cloud-native-cassandra-172909.html" target="_blank" rel="noopener">Moving to cloud-native applications and data with Kubernetes and Apache Cassandra</a></p> |
| </div> |
| <div class="paragraph"> |
| <p>DZone: <a href="https://dzone.com/articles/improving-apache-cassandras-front-door-and-backpre" target="_blank" rel="noopener">Improving Apache Cassandra’s Front Door and Backpressure</a></p> |
| </div> |
| <div class="paragraph"> |
| <p>ApacheCon: <a href="https://www.youtube.com/watch?v=rjCVqjLRALo" target="_blank" rel="noopener">Building Apache Cassandra 4.0: behind the scenes</a></p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="cassandra-tutorials-more"><a class="anchor" href="#cassandra-tutorials-more"></a>Cassandra Tutorials & More</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Users in search of a tool for scheduling backups and performing restores with cloud storage support (archiving to AWS S3, GCS, etc) should consider <a href="https://github.com/thelastpickle/cassandra-medusa/wiki" target="_blank" rel="noopener">Cassandra Medusa</a>.</p> |
| </div> |
| <div class="paragraph"> |
| <p><a href="https://blog.mayadata.io/apache-cassandra-deployment-on-openebs-and-monitoring-on-kubera" target="_blank" rel="noopener">Apache Cassandra Deployment on OpenEBS and Monitoring on Kubera</a> - Abhishek Raj, MayaData</p> |
| </div> |
| <div class="paragraph"> |
| <p><a href="https://www.youtube.com/watch?v=Z0NXWmZAB8s" target="_blank" rel="noopener">Lucene Based Indexes on Cassandra</a> - Rahul Singh, Anant</p> |
| </div> |
| <div class="paragraph"> |
| <p><a href="https://www.youtube.com/watch?v=8QV2Mc-1s64" target="_blank" rel="noopener">How Netflix Manages Version Upgrades of Cassandra at Scale</a> - Sumanth Pasupuleti, Netflix</p> |
| </div> |
| <div class="paragraph"> |
| <p><a href="https://thelastpickle.com/blog/2020/11/25/impacts-of-many-tables-on-cassandra.html" target="_blank" rel="noopener">Impacts of many tables in a Cassandra data model</a> - Alex Dejanovski, The Last Pickle</p> |
| </div> |
| <div class="paragraph"> |
| <p><a href="https://www.youtube.com/watch?v=eTUXQS7RUQw&list=PLU2OcwpQkYCy_awEe5xwlxGTk5UieA37m&index=181" target="_blank" rel="noopener">Cassandra Upgrade in production : Strategies and Best Practices</a> - Laxmikant Upadhyay, American Express</p> |
| </div> |
| <div class="paragraph"> |
| <p><a href="https://medium.com/@jeromatron/apache-cassandra-collections-and-tombstones-a45315e97cbc" target="_blank" rel="noopener">Apache Cassandra Collections and Tombstones</a> - Jeremy Hanna</p> |
| </div> |
| <div class="paragraph"> |
| <p><a href="https://itnext.io/spark-cassandra-all-you-need-to-know-tips-and-optimizations-d3810cc0bd4e" target="_blank" rel="noopener">Spark + Cassandra</a> - Javier Ramos, ITNext</p> |
| </div> |
| <div class="paragraph"> |
| <p><a href="https://www.techrepublic.com/article/how-to-install-the-apache-cassandra-nosql-database-server-on-ubuntu-20-04/" target="_blank" rel="noopener">How to install the Apache Cassandra NoSQL database server on Ubuntu 20.04</a> - Jack Wallen, TechRepublic</p> |
| </div> |
| <div class="paragraph"> |
| <p><a href="https://sindhumurugavel.medium.com/how-to-deploy-cassandra-on-openshift-and-open-it-up-to-remote-connections-c7783861b868" target="_blank" rel="noopener">How to deploy Cassandra on Openshift and open it up to remote connections</a> - Sindhu Murugavel</p> |
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