TaskContextImpl¶

TaskContextImpl is a concrete TaskContext.

Creating Instance¶

TaskContextImpl takes the following to be created:

• Stage ID
• Stage Execution Attempt ID
• Partition ID
• Task Execution Attempt ID
• Attempt Number
• TaskMemoryManager
• Local Properties
• MetricsSystem
• TaskMetrics
• Resources

TaskContextImpl is created when:

• Task is requested to run

Resources¶

resources: Map[String, ResourceInformation]

TaskContextImpl can be given resources (names) when created.

The resources are given when a Task is requested to run that in turn come from a TaskDescription (of a TaskRunner).

BarrierTaskContext¶

TaskContextImpl is available to barrier tasks as a BarrierTaskContext.