commit | 552376a80283edf8ac974d55291c4568ba17fc96 | [log] [tgz] |
---|---|---|
author | Hyunsik Choi <hyunsik@apache.org> | Fri Apr 22 05:04:17 2016 -0700 |
committer | Hyunsik Choi <hyunsik@apache.org> | Fri Apr 22 05:04:17 2016 -0700 |
tree | 0fec5482050d6c2d04216d76a9e493ebaa7bd84e | |
parent | dc96f7e274b810a038f33613b07cd67467505672 [diff] |
TAJO-2127: Use Type instead of DataType for EvalNode. Closes #1005
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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