---
id: release-notes
title: "Release notes"
---

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<!--Replace {{DRUIDVERSION}} with the correct Druid version.-->

Apache Druid {{DRUIDVERSION}} contains over $NUMBER_FEATURES new features, bug fixes, performance enhancements, documentation improvements, and additional test coverage from $NUMBER_OF_CONTRIBUTORS contributors.

<!--
Replace {{MILESTONE}} with the correct milestone number. For example: https://github.com/apache/druid/issues?q=is%3Aclosed+milestone%3A28.0+sort%3Aupdated-desc+
-->

See the [complete set of changes](https://github.com/apache/druid/issues?q=is%3Aclosed+milestone%3A{{MILESTONE}}+sort%3Aupdated-desc+) for additional details, including bug fixes.

Review the [upgrade notes](#upgrade-notes) and [incompatible changes](#incompatible-changes) before you upgrade to Druid {{DRUIDVERSION}}.
If you are upgrading across multiple versions, see the [Upgrade notes](upgrade-notes.md) page, which lists upgrade notes for the most recent Druid versions.

<!-- 
This file is a collaborative work in process. Adding a release note to this file doesn't guarantee its presence in the next release until the release branch is cut and the release notes are finalized.

This file contains the following sections:
- Important features, changes, and deprecations
- Functional area and related changes
- Upgrade notes and incompatible changes

Please add your release note to the appropriate section and include the following:
- Detailed title
- Summary of the changes (a couple of sentences) aimed at Druid users
- Link to the associated PR

If your release note contains images, put the images in the release-info/assets folder.

For tips about how to write a good release note, see [Release notes](https://github.com/apache/druid/blob/master/CONTRIBUTING.md#release-notes).
-->

## Important features, changes, and deprecations

This section contains important information about new and existing features.

## Functional area and related changes

This section contains detailed release notes separated by areas.

### Web console

#### Other web console improvements

### Ingestion

#### SQL-based ingestion

##### Other SQL-based ingestion improvements

#### Streaming ingestion

##### Other streaming ingestion improvements

### Querying

#### Other querying improvements

### Cluster management

#### Other cluster management improvements

### Data management

#### Other data management improvements

### Metrics and monitoring

### Extensions

### Documentation improvements

## Upgrade notes and incompatible changes

### Upgrade notes

#### Front-coded dictionaries

<!--Carry this forward until 32. Then move it to incompatible changes -->

In Druid 32.0.0, the front coded dictionaries feature will be turned on by default. Front-coded dictionaries reduce storage and improve performance by optimizing for strings where the front part looks similar.

Once this feature is on, you cannot easily downgrade to an earlier version that does not support the feature. 

For more information, see [Migration guide: front-coded dictionaries](./migr-front-coded-dict.md).

If you're already using this feature, you don't need to take any action. 


### Incompatible changes

### Developer notes

#### Dependency updates

The following dependencies have had their versions bumped: