druid/docs/content/development/experimental.md

---
layout: doc_page
title: "Experimental Features"
---

<!--
  ~ Licensed to the Apache Software Foundation (ASF) under one
  ~ or more contributor license agreements.  See the NOTICE file
  ~ distributed with this work for additional information
  ~ regarding copyright ownership.  The ASF licenses this file
  ~ to you under the Apache License, Version 2.0 (the
  ~ "License"); you may not use this file except in compliance
  ~ with the License.  You may obtain a copy of the License at
  ~
  ~   http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing,
  ~ software distributed under the License is distributed on an
  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  ~ KIND, either express or implied.  See the License for the
  ~ specific language governing permissions and limitations
  ~ under the License.
  -->

# Experimental Features

Features often start out in "experimental" status that indicates they are still evolving.
This can mean any of the following things:

1. The feature's API may change even in minor releases or patch releases.
2. The feature may have known "missing" pieces that will be added later.
3. The feature may or may not have received full battle-testing in production environments.

All experimental features are optional.

Note that not all of these points apply to every experimental feature. Some have been battle-tested in terms of
implementation, but are still marked experimental due to an evolving API. Please check the documentation for each
feature for full details.