Application Development on Apache Hadoop’s

Application Development on Apache Hadoop’s YARN simplified by Continuuity

Continuuity, which provides the scale-out application server for Apache Hadoop, announced the release of Weave, a new open source project that enables Java developers to rapidly build scalable, distributed applications on YARN, the next generation processing framework for Apache Hadoop. Weave makes developing Java-based YARN applications as simple as running threads on a local Java Virtual Machine (JVM). Weave also provides Java developers using YARN with increased usability and functionality, broadening the set of applications and patterns that YARN can support.

Weave is available NOW on GitHub under the Apache 2.0 License at: http://weave.continuuity.com.

Weave is a framework that facilitates the writing of distributed applications and offers a simple set of interfaces that allow developers to manage resources, nodes and jobs in these apps through an abstraction layer built on YARN. This abstraction makes building, debugging and running YARN applications easier and significantly improves and simplifies the developer experience.

Weave provides YARN users with standard support for application lifecycle management, communication between containers and the Application Master, and handling application level errors. Additional features include:

• Simplified API for specifying, running and managing applications built on YARN
• Simplified approach to specifying and managing the stages of the application lifecycle
• Generic Application Master to better support simple applications
• Log and metrics aggregation for applications
• Simplified archive management
• Improved control over application logs, metrics and errors
• Discovery service

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