10/15/2015 JPPF 5.1 release notes

Android integration

The main focus of this release, the Android node for JPPF, enables execution of Java or Android workloads on Android devices.

• Execute arbitrary Java workloads on Android Kitkat or later devices
• customize the visual feedback on the device based on tasks notifications and node events
• Secure all operations with dedicated SSL/TLS settings
• Includes a dedicated demo that works with the Mandelbrot fractal sample
• Dedicated sample illustrating how to package a Java workload for execution on Android

Client-side Job monitoring API

A new job monitoring API, which builds on, and complements, the topology monitoring, provides an automatically updated view of the jobs hierarchy by server / jobs / node dispatches.

• Navigate and manipulate the job hierarchy
• Receive notifications of job events
• Configure the granularity and frequency of updates for an optimal tradeoff between accuracy and performance
• The administration console’s code was refactored to use the job monitoring API, with update mode settings in its configuration

Management and monitoring

• Job monitoring and management operations now accept a job selector parameter, allowing bulk operations with fine-grained filtering
• It is now possible to dynamically update the SLA and metadata of a job, even while it is executing
• Node connection events can now be received as remote JMX notifications
• The node forwarding MBean now has dedicated methods for node provisioning, providing a much less cumbersome API

Server extensions and improvements

• It is now possible to receive notifications of tasks status at dispatch time in the server
• Servers are now notified in real time of node connection events in other servers, and may decide to exclude orphan servers from job scheduling

Other enhancements

• The configuration API now has a fluent interface for setting properties with typed values
• Job-aware load balancers now have full access to the information provided by the JPPFDistributedJob interface
• The “nodethreads” load-balancing algorithm now takes into account the sum of the threads in all the nodes attached to a peer server

Documentation improvements

All code in the online documentation and samples now benefits from a full-fledged syntax highlighting, in the hope of making your reading experience an even more pleasant one.

All new features and enhancements

New Features

• JPPF-136 Android node
• JPPF-324 Node connection events as JMX notifications
• JPPF-364 Add notifications for client connection pools state changes
• JPPF-378 Ability to perform house keeeping between jobs in the node
• JPPF-381 Notifications of tasks status at dispatch time in the server
• JPPF-395 Let JobSLA’s maxNodes include/exclude provisioned slaves
• JPPF-401 Ability to dynamically change the SLA and metadata of a job in the server
• JPPF-403 Extend the grid topology monitoring API with job notifications
• JPPF-412 Provide more information in the JobAwareness interface for load balancers

Enhancements

• JPPF-375 Improve the efficiency of the adaptive load-balancers for very short tasks
• JPPF-404 Extend methods of job management MBean with a job selector
• JPPF-410 Add real syntax highlighting for online doc and samples
• JPPF-415 Add convenience provisioning methods to JPPFNodeForwardingMBean
• JPPF-417 Make the setter methods in TypedProperties fluent