commit | 68263585296e30f93e541c36908a652df7398b9e | [log] [tgz] |
---|---|---|
author | Jihoon Son <jihoonson@apache.org> | Wed Mar 23 10:39:31 2016 +0900 |
committer | Jihoon Son <jihoonson@apache.org> | Wed Mar 23 10:39:59 2016 +0900 |
tree | fcf59258dceb17d6e03b0dbbf687e3da9a4f52ca | |
parent | 9fcc9fd3af4479c3042e4907938b18b6e264b500 [diff] |
TAJO-2102: Migrate to Apache Orc from Presto's one. Closes #985
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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