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Build Instructions for Apache Tajo


3 April 2014

Apache Tajo

Tajo is a relational and distributed data warehouse system for Hadoop. Tajo is designed for low-latency and scalable ad-hoc queries, online aggregation and ETL on large-data sets by leveraging advanced database techniques. It supports SQL standards. It has its own query engine which allows direct control of distributed execution and data flow. As a result, Tajo has a variety of query evaluation strategies and more optimization opportunities. In addition, Tajo will have a native columnar execution and and its optimizer.

Build instructions for Tajo


  • Unix System
  • JDK 1.6 or higher
  • Maven 3.0 or higher
  • Protocol Buffers 2.5.0
  • Internet connection for first build (to fetch all Maven and Tajo dependencies)

Maven main modules:

tajo (Main Tajo project)

     - tajo-project           (Parent POM for all Tajo Maven modules. )  
                              (All plugins & dependencies versions are defined here.)  
     - tajo-algebra  
     - tajo-catalog  
     - tajo-client  
     - tajo-common  
     - tajo-core  
     - tajo-docs  
     - tajo-jdbc  
     - tajo-project  
     - tajo-rpc  
     - tajo-storage  
     - tajo-dist              (Tajo distribution assembler)  

Maven build goals:

  • Clean : mvn clean
  • Compile : mvn compile
  • Run tests : mvn test
  • Run integrating tests : mvn verify
  • Create JAR : mvn package
  • Run findbugs : mvn compile findbugs:findbugs
  • Install JAR in M2 cache : mvn install
  • Build distribution : mvn package [-Pdist][-Dtar]

Build options:

  • Use -Dtar to create a TAR with the distribution (using -Pdist)
  • Use -Dhadoop.version to build with the specific hadoop version (-Dhadoop.version=2.3.0)

Tests options:

  • Use -DskipTests to skip tests when running the following Maven goals: ‘package’, ‘install’, ‘deploy’ or ‘verify’
  • -Dtest.exclude=
  • -Dtest.exclude.pattern=**/.java,**/.java

Building distributions:

Create binary distribution

$ mvn package -Pdist -DskipTests -Dtar

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