Using Elasticsearch & Kibana to Analyze DonorsChoose.org data

This examples provides supplementary material to the blog post on Hacking Education with Elastic stack.

In this example, we will be analyzing the historical donations and projects data provided by DonorsChoose.org using Elasticsearch and Kibana. DonorsChoose.org is an online charity that connect individuals with schools and teachers in need of resources. For additional background on this dataset, please refer to the accompanying blog post

Version

Example has been tested in following versions:

• Elasticsearch 5.0
• Kibana 5.0

Installation & Setup

• Follow the Installation & Setup Guide to install and test the Elastic Stack (you can skip this step if you already have a working installation of the Elastic Stack)

• Run Elasticsearch & Kibana

  <path_to_elasticsearch_root_dir>/bin/elasticsearch
  <path_to_kibana_root_dir>/bin/kibana

• Check that Elasticsearch and Kibana are up and running.

  • Open localhost:9200 in web browser -- should return status code 200
  • Open localhost:5601 in web browser -- should display Kibana UI.

  Note: By default, Elasticsearch runs on port 9200, and Kibana run on ports 5601. If you changed the default ports, change the above calls to use appropriate ports.

Download & Ingest Data

You have 2 options to index the data into Elasticsearch. You can either use the Elasticsearch snapshot and restore API to directly restore the donorschoose index from a snapshot. OR, you can download the raw data from the DonorsChoose.org website and then use the scripts in the Scripts-Python folder to process the raw files and index the data.

Option 1. Load data by restoring index snapshot

(Learn more about snapshot / restore here)

Using this option involves 4 easy steps:

• Download and uncompress the index snapshot .tar.gz file into a local folder
  NOTE - The index snapshot file is ~7.5 GB. Make sure you have a fast internet connection, and enough free space on disk before you download.

# Create snapshots directory
mkdir elastic_donorschoose
cd elastic_donorschoose
# Download index snapshot to elastic_donorschoose directory
wget http://download.elasticsearch.org/demos/donorschoose/donorschoose.tar.gz .
# Uncompress snapshot file
tar -xf donorschoose.tar.gz

This adds a donorschoose_backup subfolder containing the index snapshots.

• Add donorschoose_backup dir to path.repo variable in the elasticsearch.yml in the path_to_elasticsearch_root_dir/config/ folder. See example here.. Restart elasticsearch for the change to take effect.

• Register a file system repository for the snapshot (change the value of the “location” parameter below to the location of your donorschoose_backup directory)

curl -XPUT 'http://localhost:9200/_snapshot/donorschoose_backup' -d '{
    "type": "fs",
    "settings": {
        "location": "<path_to_donorschoose_backup_dir>",
        "compress": true,
        "max_snapshot_bytes_per_sec": "1000mb",
        "max_restore_bytes_per_sec": "1000mb"
    }
}'

• Restore the index data into your Elasticsearch instance:

  curl -XPOST "localhost:9200/_snapshot/donorschoose_backup/snapshot_1/_restore"

At this point, go make yourself a coffee. When you are done enjoying your cup of delicious coffee, check to see if the restore operation is complete.

Option 2: Process and load data using Python script

The raw DonorsChoose.org data is provided as 5 separate files. In order to do some useful querying of the data in a search engine / NoSQL store like Elasticsearch, you typically have to go through a data modeling process of identifying how to join data from various tables. The files and instructions provided in the Scripts-Python folder provide example of processing, modeling and ingesting data into Elasticsearch starting with the raw data.

We are providing this option in case you want to modify how the data is joined, perform additional data cleansing, enrich with additional data, etc. Follow the ReadMe in the Scripts - Python folder if you want to try this option.

Check data availability

Once the index is created using either of the above options, you can check to see if all the data is available in Elasticsearch. If all goes well, you should get a count response of approximately 3506071 when you run the following command.

curl -XGET localhost:9200/donorschoose/_count -d '{
	"query": {
		"match_all": {}
	}
}'

Visualize Data in Kibana

• Access Kibana by going to http://localhost:5601 in a web browser
• Connect Kibana to the donorschoose index in Elasticsearch
  • Click the Settings tab >> Indices tab >> Create New. Specify donorschoose as the index pattern name, select donation_timestamp as the Time-field name, and click Create to define the index pattern. (Leave the Use event times to create index names box unchecked)
• Load sample dashboard into Kibana
  • Click the Settings tab >> Objects tab >> Import, and select donorschoose_kibana.json
• Open dashboard
  • Click on Dashboard tab and open Donors Choose dashboard. Voila! You should see the following dashboard. Happy Data Exploration!

We would love to hear from you!

If you run into issues running this example or have suggestions to improve it, please use Github issues to let us know. Have an easy fix? Submit a pull request. We will try our best to respond in a timely manner!

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