docs: add juptyer API tutorial for API and jupyter tutorial index

.gitignore

@@ -27,3 +27,4 @@ README
 integration-tests/gen-scripts/
 /bin/
 *.hprof
+**/.ipynb_checkpoints/

docs/tutorials/tutorial-jupyter-index.md

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+---
+id: tutorial-jupyter-index
+title: "Jupyter Notebook tutorials"
+---
+
+<!--
+  ~ 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.
+  -->
+
+<!-- tutorial-jupyter-index.md and examples/quickstart/juptyer-notebooks/README.md share a lot of the same content. If you make a change in one place, update the other too. -->
+
+You can try out the Druid APIs using the Jupyter Notebook-based tutorials. These tutorials provide snippets of Python code that you can use to run calls against the Druid API.
+
+## Before you start
+
+Make sure you meet the following requirements before starting the Jupyter-based tutorials:
+
+- Python3 
+
+- The `requests` package for Python. For example, you can install it with the following command: 
+
+   ```bash
+   pip3 install requests
+   ````
+
+- Jupyter Lab (recommended) or Jupyter Notebook running on a non-default port. By default, Druid and Jupyter both try to use port `8888,` so start Jupyter on a different port. For example, use the following command to start Jupyter Lab on port `3001`:
+
+   ```bash
+   jupyter lab --port 3001
+   ```
+
+- An available Druid instance. You can use the `micro-quickstart` configuration described in [Quickstart (local)](./index.md). The tutorials assume that you are using the quickstart, so no authentication or authorization is expected unless explicitly mentioned.
+
+## Tutorials
+
+The notebooks are located in the [apache/druid repo](https://github.com/apache/druid/tree/master/examples/quickstart/jupyter-notebooks/). You can either clone the repo or download the notebooks you want individually. 
+
+The links that follow are the raw GitHub URLs, so you can use them to download the notebook directly, such as with `wget`, or manually through your web browser. Note that if you save the file from your web browser, make sure to remove the `.txt` extension.
+
+- [Introduction to the Druid API](https://raw.githubusercontent.com/apache/druid/master/api-tutorial-jupyter-nb/examples/quickstart/jupyter-notebooks/api-tutorial.ipynb) walks you through some of the basics related to the Druid API and several endpoints.

examples/quickstart/jupyter-notebooks/README.md

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+# Jupyter notebook tutorials for Druid
+
+<!-- This README and the tutorial-jupyter-index.md file in docs/tutorials share a lot of the same content. If you make a change in one place, update the other too. -->
+
+You can try out the Druid APIs using the Jupyter Notebook-based tutorials. These tutorials provide snippets of Python code that you can use to run calls against the Druid API.
+
+## Before you start
+
+Make sure you meet the following requirements before starting the Jupyter-based tutorials:
+
+- Python3 
+
+- The `requests` package for Python. For example, you can install it with the following command: 
+
+   ```bash
+   pip3 install requests
+   ````
+
+- Jupyter Lab (recommended) or Jupyter Notebook running on a non-default port. By default, Druid and Jupyter both try to use port `8888,` so start Jupyter on a different port. For example, use the following command to start Jupyter Lab on port `3001`:
+
+   ```bash
+   jupyter lab --port 3001
+   ```
+
+- An available Druid instance. You can use the `micro-quickstart` configuration described in [Quickstart (local)](../../../docs/tutorials/index.md). The tutorials assume that you are using the quickstart, so no authentication or authorization is expected unless explicitly mentioned.
+
+## Tutorials
+
+The notebooks are located in the [apache/druid repo](https://github.com/apache/druid/tree/master/examples/quickstart/jupyter-notebooks/). You can either clone the repo or download the notebooks you want individually. 
+
+The links that follow are the raw GitHub URLs, so you can use them to download the notebook directly, such as with `wget`, or manually through your web browser. Note that if you save the file from your web browser, make sure to remove the `.txt` extension.
+
+- [Introduction to the Druid API](https://raw.githubusercontent.com/apache/druid/master/api-tutorial-jupyter-nb/examples/quickstart/jupyter-notebooks/api-tutorial.ipynb) walks you through some of the basics related to the Druid API and several endpoints.
+
+## Contributing
+
+If you build a Jupyter tutorial, you need to do a few things to add it to the docs in addition to saving the notebook in this directory:
+
+- Clear the outputs from your notebook before you make the PR. You can use the following command: 
+
+   ```bash
+   jupyter nbconvert --ClearOutputPreprocessor.enabled=True --inplace ./path/to/notebook/notebookName.ipynb
+   ```
+
+- Update the list of [Tutorials](#tutorials) on this page and in the [ Jupyter tutorial index page](../../../docs/tutorials/tutorial-jupyter-index.md#tutorials) in the `docs/tutorials` directory. When updating `tutorial-jupyter-index.md`, make sure you provide the URL to the raw version of the file. Since you need to specify a branch, the URL will 404 until your PR is merged and the file exists on master.
+