22b57ddd60
* Rename ExtractionNamespaceCacheFactory.getCachePopulator() to populateCache() and make it to populate cache itself instead of returning a Callable which populates cache, because this "callback style" is not actually needed. ExtractionNamespaceCacheFactory isn't a "factory" so it should be renamed, but renaming right in this commit would tear the git history for files, because ExtractionNamespaceCacheFactory implementations have too many changed lines. Going to rename ExtractionNamespaceCacheFactory to something like "CachePopulator" in one of subsequent PRs. This commit is a part of a bigger refactoring of the lookup cache subsystem. * Remove unused line and imports
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
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.