8e0c307e54
* Fallback to parsing classpath for hadoop task in Java 9+ In Java 9 and above we cannot assume that the system classloader is an instance of URLClassLoader. This change adds a fallback method to parse the system classpath in that case, and adds a unit test to validate it matches what JDK8 would do. Note: This has not been tested in an actual hadoop setup, so this is mostly to help us pass unit tests. * Remove granularity test of dubious value One of our granularity tests relies on system classloader being a URLClassLoaders to catch a bug related to class initialization and static initializers using a subclass (see #2979) This test was added to catch a potential regression, but it assumes we would add back the same type of static initializers to this specific class, so it seems to be of dubious value as a unit test and mostly serves to illustrate the bug. relates to #5589 |
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README.md
Apache Druid (incubating)
Apache Druid (incubating) is a high performance analytics data store for event-driven data.
Disclaimer: Apache Druid is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.
Getting Started
You can get started with Druid with our quickstart.
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 in this repository and submit a pull request.
Community
Community support is available on the druid-user mailing list, 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.
Some committers and users are present in the channel #druid on the Apache Slack team. Please use our invitation link to join, and once you join, add the #druid channel.
Building From Source
Please note that JDK 8 is required to build Druid.
For instructions on building Druid from source, see docs/content/development/build.md
Contributing
Please follow the community guidelines for contributing.