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Apache Druid: a high performance real-time analytics database.
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Eric Tschetter a36185926e Add "uncoveredIntervals" to responseContext 
This change will cause the CachingClusteredClient to populate the "uncoveredIntervals"
key in the responseContext map.  The value will be any intervals that were requested in
the query but are not actually covered by the segments underlying the data source.

For unit testing, CachingClisteredClientTest is testing the caching behavior of the
object and it is pretty hard to adjust it to only test this new behavior, so I created
a new, parallel "CachingClusteredClientFunctionalityTest" to simplify testing just
basic functionality.
 		2015-12-07 16:16:57 -08:00
aws-common cleanup and remove unused imports 2015-11-11 12:25:21 -08:00
benchmarks cleanup and remove unused imports 2015-11-11 12:25:21 -08:00
common Merge pull request #1896 from gianm/allocate-segment 2015-11-18 21:05:46 -08:00
distribution Added cloudfiles-extensions in order to support Rackspace's cloudfiles as deep storage 2015-11-04 17:44:48 +01:00
docs Merge pull request #2008 from codingwhatever/regex-search-query 2015-12-03 09:57:34 -06:00
examples New extension loading mechanism 2015-10-21 14:22:36 -05:00
extensions reformat datasketches module to satisfy druid style guidelines 2015-11-19 01:07:03 -06:00
indexing-hadoop Merge pull request #1896 from gianm/allocate-segment 2015-11-18 21:05:46 -08:00
indexing-service Merge pull request #2024 from metamx/fairBigTaskQueueLock 2015-12-03 19:32:53 -08:00
integration-tests switch to Java 8 + cleanup 2015-11-17 13:35:06 -08:00
processing Update IncrementalIndexTest copyright notice 2015-12-03 18:03:08 -08:00
publications more edits to radstack paper 2015-10-18 19:52:44 -07:00
server Add "uncoveredIntervals" to responseContext 2015-12-07 16:16:57 -08:00
services Merge pull request #1896 from gianm/allocate-segment 2015-11-18 21:05:46 -08:00
.gitignore move distribution artifacts to distribution/target 2015-10-30 12:40:05 -05:00
.travis.yml faster build: cache maven dependencies in travis 2015-08-07 18:05:30 -07:00
CONTRIBUTING.md updating how to contribute guide 2015-11-19 23:30:28 -06:00
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 support for PasswordProvider interface to enable writing druid extension which can get metadata store password from secured location or anywhere instead of plain text properties file 2015-02-25 14:05:19 -06:00
README.md Revert "Update README.md" 2015-09-22 20:38:12 -07:00
eclipse_formatting.xml towards a community led druid 2015-01-31 20:57:36 -08:00
intellij_formatting.jar Update Scala formatting in intellij_formatting.jar, and rename style to "Druid Java and Scala style". 2015-12-03 13:35:44 -08:00
pom.xml Disable javadoc linting. 2015-12-03 19:11:29 -08:00
upload.sh rework tarball distribution: 2015-08-18 18:32:33 -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, 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 latest Druid Documentation 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.

Tutorials

We have a series of tutorials to get started with Druid. If you are just getting started, we suggest going over the first Druid tutorial.

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.