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This article provides information about the most recent Azure HDInsight release updates. For information on earlier releases, see HDInsight Release Notes Archive.
Summary
Azure HDInsight is one of the most popular services among enterprise customers for open-source analytics on Azure. Subscribe to the HDInsight Release Notes for up-to-date information on HDInsight and all HDInsight versions.
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Release Information
Release date: Jun 29, 2026
Note
This release is a hotfix or maintenance release for the Resource Provider. For more information, see Resource Provider.
Azure HDInsight periodically releases maintenance updates for delivering bug fixes, performance enhancements, and security patches ensuring you stay up to date with these updates guarantees optimal performance and reliability.
This release note applies to
HDInsight 5.1 version.
Azure HDInsight releases are available to all regions over several days. This release note is applicable for image number 2606012120. How to check the image number?
HDInsight uses safe deployment practices, which involve gradual region deployment. It might take up to 10 business days for a new release or a new version to be available in all regions.
OS versions
- HDInsight 5.1: Ubuntu 18.04.5 LTS Linux Kernel 5.4
Note
Ubuntu 18.04 is supported under Extended Security Maintenance(ESM) by the Azure Linux team for Azure HDInsight July 2023, release onwards.
For workload specific versions, see HDInsight 5.x component versions.
Issues fixed
- Important security fixes.
If you have any more questions, contact Azure Support.
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Note
We advise customers to use to latest versions of HDInsight Images as they bring in the best of open source updates, Azure updates, and security fixes. For more information, see, Best practices.