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E-MapReduce:Minor version update

Last Updated:Mar 26, 2026

Minor versions are updates within the 2.X or 3.X series and include performance improvements, new feature releases, and issue fixes. Version updates are irreversible — once applied, you cannot downgrade. EMR Serverless StarRocks applies minor version updates through a rolling update.

Prerequisites

Before you begin, make sure you have:

  • A StarRocks instance created. For more information, see Create an instance.

  • A StarRocks instance with status Running

Usage notes

  • Minor version updates rarely introduce feature incompatibility. Because community version iterations can occasionally affect behavior, test thoroughly before updating a production instance. We recommend that you thoroughly verify the test environment before updating to prevent any adverse effects on your business operations.

  • During the update, the following operations are unavailable: upgrading configurations, scaling the instance, modifying configurations, and applying for a public endpoint.

Update the minor version

  1. Go to the Instance Details tab.

    1. Log on to the E-MapReduce console.

    2. In the left-side navigation pane, choose EMR Serverless > StarRocks.

    3. In the top menu bar, select a region.

    4. Find the target instance and click its name.

  2. In the Version Information section, click Update next to Minor Version.

  3. In the Confirm Minor Version Update dialog box, configure the parameters and click OK.

    Parameter

    Description

    Select Version

    The minor version to update to. Select the latest version for the most recent fixes and improvements.

    Restart Mode

    Available only for StarRocks shared-data instances. Controls how CNs restart during the update. See the options below.

    Restart Mode options

    • Rolling Restart (default) — CNs restart in sequence, one at a time, keeping other nodes running throughout the update. Use this mode when service continuity is required.

    • Quick Restart — Requires minor version 1.6.10 or later. All CNs restart simultaneously, so the update completes faster, but your service may be interrupted. Use this mode during off-peak hours when a brief service interruption is acceptable.

FAQ

Can I skip minor versions and update directly to a later release?

Yes. You can update to any available minor version shown in the EMR console — you are not limited to the next sequential version.

What happens to running queries during the update?

During a version update, query failures may occur. We recommend that you set the maintenance window to off-peak hours.