apache/hadoop

Analysis updated 2026-06-24

★ 15,545JavaAudience · dataComplexity · 5/5LicenseSetup · hard

Mindmap

mindmap
  root((hadoop))
    Inputs
      Large data files
      MapReduce jobs
      Cluster config
    Outputs
      HDFS file storage
      Job results
      Cluster metrics
    Use Cases
      Store petabytes on commodity hardware
      Run batch ETL jobs
      Power data lake backends
    Tech Stack
      Java
      HDFS
      YARN
      MapReduce

mindmap root((hadoop)) Inputs Large data files MapReduce jobs Cluster config Outputs HDFS file storage Job results Cluster metrics Use Cases Store petabytes on commodity hardware Run batch ETL jobs Power data lake backends Tech Stack Java HDFS YARN MapReduce

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What do people build with it?

USE CASE 1

Stand up an HDFS cluster to store petabytes of log data on commodity servers

USE CASE 2

Run a MapReduce batch job across a multi-node cluster for nightly ETL

USE CASE 3

Serve as the storage layer underneath Hive, Spark, or HBase

What is it built with?

JavaHDFSYARNMapReduce

How does it compare?

	apache/hadoop	android10/android-cleanarchitecture	konloch/bytecode-viewer
Stars	15,545	15,548	15,511
Language	Java	Java	Java
Setup difficulty	hard	moderate	easy
Complexity	5/5	3/5	3/5
Audience	data	developer	developer

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1day+

Real clusters need careful JVM, networking, and HDFS tuning, single-node mode is fine for learning but not realistic.

Apache License 2.0, a permissive open-source license that allows broad commercial and modified use with attribution.

In plain English

Based on the description and topics, this appears to be Apache Hadoop, a widely-referenced open-source Java framework for distributed storage and processing of large datasets. The README does not provide further detail.

Copy-paste prompts

Prompt 1

Walk me through setting up a single-node Hadoop cluster on a Linux box for learning HDFS

Prompt 2

Write a minimal MapReduce job in Java that counts words across a multi-gigabyte text dataset on HDFS

Prompt 3

Compare Hadoop YARN vs Kubernetes for scheduling batch data jobs in 2026

Prompt 4

Show me how to configure HDFS replication and rack awareness for a 10-node cluster

Frequently asked questions

What is hadoop?

Apache Hadoop is an open-source Java framework for distributed storage and batch processing of very large datasets across clusters of commodity machines.

What language is hadoop written in?

Mainly Java. The stack also includes Java, HDFS, YARN.

What license does hadoop use?

Apache License 2.0, a permissive open-source license that allows broad commercial and modified use with attribution.

How hard is hadoop to set up?

Setup difficulty is rated hard, with roughly 1day+ to a first successful run.

Who is hadoop for?

Mainly data.

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