Apache Druid: a high performance real-time analytics database.
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zhangxinyu e43e5ebbcd Materialized view implementation (#5556)
* implement materialized view

* modify code according to jihoonson's comments

* modify code according to jihoonson's comments - 2

* add documentation about materialized view

* use new HadoopTuningConfig in pr 5583

* add minDataLag and fix optimizer bug

* correct value of DEFAULT_MIN_DATA_LAG_MS

* modify code according to jihoonson's comments - 3

* use the boolean expression instead of if-else
2018-06-09 12:24:54 -07:00
.idea Remove unused code and exception declarations (#5461) 2018-03-16 22:11:12 +01:00
api Fix NPE in PrefetchableTextFilesFirehoseFactory (#5802) 2018-05-24 21:44:03 -07:00
aws-common Support enablePathStyleAccess, disableChunkedEncoding, and forceGlobalBucketAccessEnabled for aws client (#5702) 2018-05-02 10:45:38 -07:00
benchmarks Lazy-ify ValueMatcher BitSet optimization for string dimensions. (#5403) 2018-06-05 09:06:51 -07:00
ci Add TeamCity instructions (#5379) 2018-02-10 13:13:33 -08:00
codestyle Add GenericWhitespace checkstyle check (#5668) 2018-04-24 01:09:14 +05:30
common Moving averages for ingestion row stats (#5748) 2018-06-05 09:08:57 -07:00
distribution Materialized view implementation (#5556) 2018-06-09 12:24:54 -07:00
docs Materialized view implementation (#5556) 2018-06-09 12:24:54 -07:00
examples fix freeSpacePercent in segmentCache.locations (#5765) 2018-05-24 11:15:30 +09:00
extendedset Remove unused code and exception declarations (#5461) 2018-03-16 22:11:12 +01:00
extensions-contrib Materialized view implementation (#5556) 2018-06-09 12:24:54 -07:00
extensions-core Moving averages for ingestion row stats (#5748) 2018-06-05 09:08:57 -07:00
hll Remove unused code and exception declarations (#5461) 2018-03-16 22:11:12 +01:00
indexing-hadoop Fix for when Hadoop dataSource inputSpec is specified multiple times. (#5790) 2018-05-23 03:16:55 +05:30
indexing-service Materialized view implementation (#5556) 2018-06-09 12:24:54 -07:00
integration-tests Support enablePathStyleAccess, disableChunkedEncoding, and forceGlobalBucketAccessEnabled for aws client (#5702) 2018-05-02 10:45:38 -07:00
java-util Simple cleanup for ThreadPoolTaskRunner and SetAndVerifyContextQueryRunner / Add ThreadPoolTaskRunnerTest (#5557) 2018-05-15 22:53:11 +05:30
processing Lazy-ify IncrementalIndex filtering too. (#5852) 2018-06-06 18:03:34 -07:00
publications Changes to lambda architecture paper required for HICSS (#3382) 2016-09-06 21:32:21 -07:00
server Materialized view implementation (#5556) 2018-06-09 12:24:54 -07:00
services Update to jetty 9.4; Enable request decompression (#5624) 2018-06-08 14:53:08 -07:00
sql Kerberos Spnego Authentication Router Issue (#5706) 2018-05-05 20:33:51 -07:00
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.travis.yml Use the official aws-sdk instead of jet3t (#5382) 2018-03-21 15:36:54 -07:00
CONTRIBUTING.md Replace dev list references in docs. (#5723) 2018-04-30 11:25:45 -07:00
DruidCorporateCLA.pdf fix CLA email / mailing address 2014-04-17 15:26:28 -07:00
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INTELLIJ_SETUP.md Prohibit and remove unused declarations in the processing module (#4930) 2017-11-09 09:27:27 -08:00
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NOTICE Extension points for authentication/authorization (#4271) 2017-09-15 23:45:48 -07:00
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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
intellij-sdk-config.jpg Prohibit and remove unused declarations in the processing module (#4930) 2017-11-09 09:27:27 -08:00
pom.xml Materialized view implementation (#5556) 2018-06-09 12:24:54 -07:00
upload.sh upload.sh: Use awscli if s3cmd is not available. (#3114) 2016-06-08 17:01:46 -07:00

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

The Druid community is in the process of migrating to Apache by way of the Apache Incubator. Eventually, as we proceed along this path, our site will move from http://druid.io/ to https://druid.apache.org/.

Community support is available on the druid-user mailing list(druid-user@googlegroups.com), which is hosted at Google Groups.

Development discussions occur on dev@druid.apache.org, which you can subscribe to by emailing dev-subscribe@druid.apache.org.

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

Contributing

Please follow the guidelines listed here.