commit | 4aef83a39adf1055c212df5fac8b9451e24315b4 | [log] [tgz] |
---|---|---|
author | Hyunsik Choi <hyunsik@apache.org> | Wed Apr 20 13:37:12 2016 -0700 |
committer | Hyunsik Choi <hyunsik@apache.org> | Wed Apr 20 13:37:12 2016 -0700 |
tree | 118e564a573cc92aec86e038abd38054e0d7dcd4 | |
parent | 71d2825cd66591cd7f15f15fa74b0f000a5c2590 [diff] |
TAJO-2108: Refactor Schema to be immutable. Closes #1000
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.
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