<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>0.20.4-incubating Release · Apache Heron</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="The Heron community is pleased to announce the release of version 0.20.4-incubating. "/><meta name="docsearch:language" content="en"/><meta property="og:title" content="0.20.4-incubating Release · Apache Heron"/><meta property="og:type" content="website"/><meta property="og:url" content="https://heron.apache.org/blog/2021/05/27/0.20.4-incubating-release"/><meta property="og:description" content="The Heron community is pleased to announce the release of version 0.20.4-incubating. "/><meta property="og:image" content="https://heron.apache.org/img/undraw_online.svg"/><meta name="twitter:card" content="summary"/><meta name="twitter:image" content="https://heron.apache.org/img/undraw_tweetstorm.svg"/><link rel="shortcut icon" href="/img/favicon-32x32.png"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css"/><link rel="alternate" type="application/atom+xml" href="https://heron.apache.org/blog/atom.xml" title="Apache Heron Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://heron.apache.org/blog/feed.xml" title="Apache Heron Blog RSS Feed"/><script>
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        </script></nav></div><div class="container mainContainer postContainer blogContainer"><div class="wrapper"><div class="lonePost"><div class="post"><header class="postHeader"><h1 class="postHeaderTitle"><a href="/blog/2021/05/27/0.20.4-incubating-release">0.20.4-incubating Release</a></h1><p class="post-meta">May 27, 2021</p><div class="authorBlock"><p class="post-authorName"><a href="https://www.linkedin.com/in/joshfischer1108/" target="_blank" rel="noreferrer noopener">Josh Fischer</a></p></div></header><div><span><p>The Heron community is pleased to announce the release of version 0.20.4-incubating.
We are excited as this is the first release the Heron community has distributed a full set of convenience binaries from the released source code while under the Apache Foundation.
Heron has had several improvements implemented while in incubation, and the community has learned much along the way.</p>
<p>This is a major milestone in the incubation process at the Apache Incubator for Heron.<br>
We expect the release of convenience binaries to ease the adoption of Heron in organizations across the world.
This goal could not have been achieved without the solid community behind Heron.</p>
<p>Here are a few updates since the last release:</p>
<ul>
<li><a href="https://github.com/apache/incubator-heron/pull/3664/">Improving Kubernetes Resource Handling</a></li>
<li><a href="https://github.com/apache/incubator-heron/pull/3651">Adding Prometheus Metrics Rule</a></li>
<li><a href="https://github.com/apache/incubator-heron/pull/3669">Use Build Kit Docker feature to shrink the Docker image size</a></li>
<li><a href="https://github.com/apache/incubator-heron/pull/3677">Removing unused Bookkeeper Port</a></li>
<li><a href="https://github.com/apache/incubator-heron/pull/3688">Use the full featured Zookeeper config generation script</a></li>
<li><a href="https://github.com/apache/incubator-heron/pull/3133">Add sum/max/min reducers in Scala</a></li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="additional-information"></a><a href="#additional-information" 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>Additional Information</h2>
<ul>
<li>To download Apache Heron 0.20.4-incubating, click <a href="https://heron.apache.org/download">here</a></li>
<li>To view the official Heron Docker Image repository click <a href="https://hub.docker.com/repository/docker/apache/heron">here</a></li>
<li>Maven artifacts can be found <a href="https://search.maven.org/search?q=apache-heron">here</a></li>
<li>For more information about Apache Heron 0.20.4-incubating, see <a href="https://heron.apache.org/release-notes/#0.20.4">0.20.4-incubating release notes</a> and <a href="https://github.com/apache/incubator-heron/releases/tag/0.20.4-incubating-rc1">The 0.20.4-incubating PR List</a></li>
</ul>
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