# tomwhite/hadoop-book

Example source code accompanying O'Reilly's "Hadoop: The Definitive Guide" by Tom White

Repository: https://github.com/tomwhite/hadoop-book
Canonical: https://ross.abutalabs.com/products/hadoop-book
Homepage: http://www.hadoopbook.com/
Language: Makefile
License Family: other
Topics: hadoop, book, o-reilly
Last push: 2020-03-17T05:11:30+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 6260, "days_push": 2360, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3498, forks 2518 (observed 2026-08-28T04:08:07.410952+00:00)

## What it is
Example source code accompanying O'Reilly's 'Hadoop: The Definitive Guide' by Tom White, covering the Apache Hadoop ecosystem including Hadoop 2, Pig, Hive, Avro, and ZooKeeper. It provides buildable Maven-based sample code and sample datasets for the book's chapters.

## Use cases
- learn hadoop mapreduce with worked examples
- find sample code for Hadoop: The Definitive Guide
- practice writing pig and hive scripts
- get example datasets for hadoop exercises
- understand the hadoop ecosystem hands-on
- build hadoop example jars with maven

## When to choose
- you are reading the book and want to run its examples
- you want classic MapReduce, Pig, and Hive code samples
- you are learning Hadoop 2 ecosystem tools from scratch

## When to avoid
- you need a production Hadoop framework or library
- you want up-to-date examples for modern Spark or Hadoop 3
- you need maintained, supported software rather than book companion code

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: developer-tools, data-science, etl
- domain: big-data, tutorials
- platform: jvm, cross-platform
- tags: hadoop, mapreduce, big-data, book-examples, oreilly, sample-code, distributed-computing, data-engineering

## Member repositories
- tomwhite/hadoop-book (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:07.410952+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:35:51.608466+00:00, confidence not recorded.
  - readme: https://github.com/tomwhite/hadoop-book (fetched 2026-08-28T04:08:07.410952+00:00, sha 40482cdaf933)
  - homepage: http://www.hadoopbook.com/ (fetched 2026-08-29T09:29:57.014746+00:00, sha 6cef6075f76f)
- Data as of 2026-08-30T08:39:29.467469+00:00.