Apache Calcite

Apache Calcite
Developer(s) Apache Software Foundation
Initial release June 27, 2014 (2014-06-27)[1]
Stable release
1.16.0 / 19 March 2018 (2018-03-19)[2]
Repository
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Written in Java
Operating system Cross-platform
Type SQL database
License Apache License 2.0
Website calcite.apache.org

Apache Calcite is an open source framework for building databases and data management systems. It includes a SQL parser, an API for building expressions in relational algebra, and a query planning engine. As a framework, Calcite does not store its own data or metadata, but instead allows external data and metadata to be accessed by means of plug-ins.

Several other Apache projects use Calcite.[3] Hive uses Calcite for cost-based query optimization;[4] Drill and Kylin use Calcite for SQL parsing and optimization; Samza and Storm use Calcite for streaming SQL. As of August 2016, Apex, Phoenix and Flink have projects under development that use Calcite.

References

  1. ↑ Julian Hyde. "Optiq-0.8 release announcement". Apache Software Foundation.
  2. ↑ Camacho, Jesús (24 March 2017). "Release 1.16.0". Retrieved 23 April 2018.
  3. ↑ "Powered by Calcite". Apache Software Foundation.
  4. ↑ Julian Hyde. "Cost-based query optimization in Apache Hive 0.14", Hortonworks, 24 September 2014.
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