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class="breadcrumbs__item"><span class="breadcrumbs__link">Stream ingestion</span><meta itemprop="position" content="2"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Realtime Process</span><meta itemprop="position" content="3"></li></ul></nav><div class="theme-doc-markdown markdown"><header><h1>Realtime Process</h1></header><p>Older versions of Apache Druid supported a standalone &#x27;Realtime&#x27; process to query and index &#x27;stream pull&#x27;
modes of real-time ingestion. These processes would periodically build segments for the data they had collected over
some span of time and then set up hand-off to <a href="/docs/26.0.0/design/historical">Historical</a> servers.</p><p>This processes could be invoked by</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">org.apache.druid.cli.Main server realtime</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This model of stream pull ingestion was deprecated for a number of both operational and architectural reasons, and
removed completely in Druid 0.16.0. Operationally, realtime nodes were difficult to configure, deploy, and scale because
each node required an unique configuration. The design of the stream pull ingestion system for realtime nodes also
suffered from limitations which made it not possible to achieve exactly once ingestion.</p><p>The extensions <code>druid-kafka-eight</code>, <code>druid-kafka-eight-simpleConsumer</code>, <code>druid-rabbitmq</code>, and <code>druid-rocketmq</code> were also
removed at this time, since they were built to operate on the realtime nodes.</p><p>Please consider using the <a href="/docs/26.0.0/development/extensions-core/kafka-ingestion">Kafka Indexing Service</a> or
<a href="/docs/26.0.0/development/extensions-core/kinesis-ingestion">Kinesis Indexing Service</a> for stream pull ingestion instead.</p></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/docs/26.0.0/development/extensions-core/kinesis-ingestion"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Amazon Kinesis</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/docs/26.0.0/ingestion/native-batch"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Native batch</div></a></nav></div></div></div></div></main></div></div><footer class="footer"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="margin-bottom--sm"><img src="/img/favicon.png" class="themedImage_ToTc themedImage--light_HNdA footer__logo"><img src="/img/favicon.png" class="themedImage_ToTc themedImage--dark_i4oU footer__logo"></div><div class="footer__copyright">Copyright © 2023 Apache Software Foundation. Except where otherwise noted, licensed under CC BY-SA 4.0. 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></div></footer></div>
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