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Apache Druid: a high performance real-time analytics database.
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Roman Leventov 70e83bea6d Fix PathChildrenCache's ExecutorService leak (#3726) 
* Fix PathChildrenCache's executorService leak in Announcer, CuratorInventoryManager and RemoteTaskRunner

* Use a single ExecutorService for all workerStatusPathChildrenCaches in RemoteTaskRunner
 		2016-12-07 13:00:10 -08:00
api make sure CliCoordinator initializes and starts DerbyMetadataStorage first if configured (#3700) 2016-12-06 10:22:04 -08:00
aws-common Bump versions to 0.9.3-SNAPSHOT (#3524) 2016-09-29 13:53:32 -07:00
benchmarks groupBy v2: Ignore timestamp completely when granularity = all, except for the final merge. (#3740) 2016-12-06 16:17:32 -08:00
bytebuffer-collections Fix concurrency defects, remove unnecessary volatiles (#3701) 2016-11-22 16:42:28 -08:00
codestyle Checkstyle checks for AvoidStaticImport, UnusedImports. (#3660) 2016-11-05 11:34:36 -07:00
common Expressions: Allow escapes in quoted identifiers. (#3735) 2016-12-06 00:17:55 +05:30
distribution Add druid-lookups-cached-single to default distribution build (#3550) 2016-10-15 08:11:04 -07:00
docs allow and load extensions with absolute paths in druid.extensions.loadList (#3747) 2016-12-06 17:40:23 -08:00
examples Checkstyle checks for AvoidStaticImport, UnusedImports. (#3660) 2016-11-05 11:34:36 -07:00
extensions-contrib Support virtual column for select query (#2511) 2016-12-05 15:14:35 -08:00
extensions-core Don't update segment metadata if archive doesn't move anything (#3476) 2016-12-01 07:49:28 -08:00
indexing-hadoop Fix concurrency defects, remove unnecessary volatiles (#3701) 2016-11-22 16:42:28 -08:00
indexing-service Fix PathChildrenCache's ExecutorService leak (#3726) 2016-12-07 13:00:10 -08:00
integration-tests Wait for any pending realtime task to complete before disabling datasource (#3757) 2016-12-07 10:17:16 -08:00
java-util Fix concurrency defects, remove unnecessary volatiles (#3701) 2016-11-22 16:42:28 -08:00
processing Optimize Iterator<ImmutableBitmap> implementation inside Filters.matchPredicate() so that it doesn't emit empty bitmap in the end of the iteration, and make it to follow Iterator contract, that is throw NoSuchElementException from next() if there are no more bitmaps (#3754) 2016-12-07 12:54:09 -08:00
publications Changes to lambda architecture paper required for HICSS (#3382) 2016-09-06 21:32:21 -07:00
server Fix PathChildrenCache's ExecutorService leak (#3726) 2016-12-07 13:00:10 -08:00
services make sure CliCoordinator initializes and starts DerbyMetadataStorage first if configured (#3700) 2016-12-06 10:22:04 -08:00
.gitignore move distribution artifacts to distribution/target 2015-10-30 12:40:05 -05:00
.travis.yml Disable cobertura travis portion (#3122) 2016-06-13 12:27:35 +05:30
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 bytebuffercollections from Metamarkets. (#3647) 2016-11-11 10:51:07 -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 Support virtual column for select query (#2511) 2016-12-05 15:14:35 -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.