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.

Project

• Project Home
• Source Repository
• Issue Tracking

License

• Apache License 2.0

Documents

• Tajo Wiki
• Getting Started
• Query Language
• Configuration Guide
• Backup and Restore Guide
• Functions
• Tajo Interactive Shell

Requirements

• Java 1.8 or higher
• Hadoop 2.3.0 or higher

Mailing lists

• dev@tajo.apache.org - To discuss and ask general development issues.
• user@tajo.apache.org - To discuss and ask end-user questions/issues.
• issues@tajo.apache.org - To see notifications made in the Tajo issue tracking system, review board, and Jenkins CI.
• commits@tajo.apache.org - To monitor commits to the source repository.

To subscribe to the mailing lists, please send an email to:

${listname}-subscribe@tajo.apache.org

For example, to subscribe to dev, send an email from your desired subscription address to:

dev-subscribe@tajo.apache.org

and follow the instructions from there.