Apache Druid: a high performance real-time analytics database.
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Roman Leventov ee9b5a619a Fix bugs in query builders and in TimeBoundaryQuery.getFilter() (#4131)
* Add queryMetrics property to Query interface; Fix bugs and removed unused code in Druids

* Fix a bug in TimeBoundaryQuery.getFilter() and remove TimeBoundaryQuery.getDimensionsFilter()

* Don't reassign query's queryMetrics if already present in CPUTimeMetricQueryRunner and MetricsEmittingQueryRunner

* Add compatibility constructor to BaseQuery

* Remove Query.queryMetrics property

* Move nullToNoopLimitSpec() method to LimitSpec interface

* Rename GroupByQuery.applyLimit() to postProcess(); Fix inconsistencies in GroupByQuery.Builder
2017-04-25 16:32:02 -05:00
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README.md

Build Status Coverage Status

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.