Apache Druid: a high performance real-time analytics database.
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Jihoon Son 5f3c863d5e Add compaction task (#4985)
* Add compaction task

* added doc

* use combining aggregators

* address comments

* add support for dimensionsSpec

* fix getUniqueDims and getUniqueMetics

* find unique dimensionsSpec

* fix compilation

* add unit test

* fix test

* fix test

* test for different dimension orderings and types, and doc for type and ordering

* add control for custom ordering and type

* update doc

* fix compile

* fix compile

* add segments param

* fix serde error

* fix build
2017-11-03 21:55:27 -06:00
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README.md

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Druid

Druid is a distributed, column-oriented, real-time analytics data store that is commonly used to power exploratory dashboards in multi-tenant environments.

Druid excels as a data warehousing solution for fast aggregate queries on petabyte sized data sets. Druid supports a variety of flexible filters, exact calculations, approximate algorithms, and other useful calculations.

Druid can load both streaming and batch data and integrates with Samza, Kafka, Storm, Spark, and Hadoop.

License

Apache License, Version 2.0

More Information

More information about Druid can be found on http://www.druid.io.

Documentation

You can find the documentation for the latest Druid release on the project website.

If you would like to contribute documentation, please do so under /docs/content in this repository and submit a pull request.

Getting Started

You can get started with Druid with our quickstart.

Reporting Issues

If you find any bugs, please file a GitHub issue.

Community

Community support is available on the druid-user mailing list(druid-user@googlegroups.com).

Development discussions occur on the druid-development list(druid-development@googlegroups.com).

We also have a couple people hanging out on IRC in #druid-dev on irc.freenode.net.

Contributing

Please follow the guidelines listed here.