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Apache Druid: a high performance real-time analytics database.
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Gian Merlino ca6053d045 SQL: Resolve column type conflicts in favor of newer segments. (#3930) 
* SQL: Resolve column type conflicts in favor of newer segments.

Helps with schema evolution from e.g. long -> float, which is supported
on the query side.

* Take columns from highest timestamp instead of max segment id.

* Fixes and docs.
 		2017-02-15 17:48:49 -08:00
api disable javascript execution by default (#3818) 2017-02-13 15:11:18 -08:00
aws-common Bump version to 0.10.0-SNAPSHOT. (#3913) 2017-02-06 17:54:35 -08:00
benchmarks SQL: Add context and contextual functions to planner. (#3919) 2017-02-15 14:09:14 -08:00
bytebuffer-collections Optimizations of union, intersection and iterators of concise bitsets (part of #3798) (#3883) 2017-02-10 18:02:26 -08:00
codestyle Migrating extendedset from Metamarkets. (#3694) 2017-01-17 10:10:27 -08:00
common Fine grained buffer management for groupby (#3863) 2017-02-14 12:55:54 -08:00
distribution Require Java 8 and include some Java 8 dependencies. (#3914) 2017-02-14 12:51:51 -08:00
docs SQL: Resolve column type conflicts in favor of newer segments. (#3930) 2017-02-15 17:48:49 -08:00
examples Bump version to 0.10.0-SNAPSHOT. (#3913) 2017-02-06 17:54:35 -08:00
extendedset Optimizations of union, intersection and iterators of concise bitsets (part of #3798) (#3883) 2017-02-10 18:02:26 -08:00
extensions-contrib File.deleteOnExit() (#3923) 2017-02-13 15:12:14 -08:00
extensions-core SQL: Add context and contextual functions to planner. (#3919) 2017-02-15 14:09:14 -08:00
hll pre-computed HLL support for hyperUnique aggregator (#3909) 2017-02-13 15:26:20 -08:00
indexing-hadoop File.deleteOnExit() (#3923) 2017-02-13 15:12:14 -08:00
indexing-service fix numShards = -1 not being handled correctly (#3937) 2017-02-14 18:45:38 -08:00
integration-tests Bump version to 0.10.0-SNAPSHOT. (#3913) 2017-02-06 17:54:35 -08:00
java-util Fine grained buffer management for groupby (#3863) 2017-02-14 12:55:54 -08:00
processing Fine grained buffer management for groupby (#3863) 2017-02-14 12:55:54 -08:00
publications Changes to lambda architecture paper required for HICSS (#3382) 2016-09-06 21:32:21 -07:00
server Require Java 8 and include some Java 8 dependencies. (#3914) 2017-02-14 12:51:51 -08:00
services Require Java 8 and include some Java 8 dependencies. (#3914) 2017-02-14 12:51:51 -08:00
sql SQL: Resolve column type conflicts in favor of newer segments. (#3930) 2017-02-15 17:48:49 -08:00
.gitignore move distribution artifacts to distribution/target 2015-10-30 12:40:05 -05:00
.travis.yml Require Java 8 and include some Java 8 dependencies. (#3914) 2017-02-14 12:51:51 -08:00
CONTRIBUTING.md Add doc link to eclipse formatting settings as well (#3131) 2016-06-24 15:27:50 -07:00
DruidCorporateCLA.pdf fix CLA email / mailing address 2014-04-17 15:26:28 -07:00
DruidIndividualCLA.pdf fix CLA email / mailing address 2014-04-17 15:26:28 -07:00
LICENSE Clean up README and license 2015-02-18 23:09:28 -08:00
NOTICE Migrating extendedset from Metamarkets. (#3694) 2017-01-17 10:10:27 -08:00
README.md update readme (#2830) 2016-04-13 11:33:31 -07:00
druid_intellij_formatting.xml Make formatting IntelliJ 2016 friendly (#2978) 2016-05-18 12:42:21 -07:00
eclipse.importorder Merge pull request #2905 from javasoze/eclipse_formatting 2016-04-29 18:42:03 -07:00
eclipse_formatting.xml Merge pull request #2905 from javasoze/eclipse_formatting 2016-04-29 18:42:03 -07:00
pom.xml Require Java 8 and include some Java 8 dependencies. (#3914) 2017-02-14 12:51:51 -08:00
upload.sh upload.sh: Use awscli if s3cmd is not available. (#3114) 2016-06-08 17:01:46 -07:00

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.