execsystem

Type Members

1. case class Cores(value: Double) extends Resource[Double, Cores] with Product with Serializable

   

   A resource representing a number of cores (including partial cores).

2. trait FinalStatusReporter extends AnyRef

   

   Provides a method to provide an execution report for a task tracker

3. class GraphNode extends BaseGraphNode

   

   A node in the execution graph

4. case class Memory(value: Long) extends Resource[Long, Memory] with Product with Serializable

   

   A resource representing the memory.

5. class NaiveScheduler extends Scheduler

   

   Simple scheduler that picks the task that uses the most memory, cores, then disk.

6. sealed abstract class Resource[T, R <: Resource[T, R]] extends AnyRef

   

   Sealed base class that Resources must extend.

   Sealed base class that Resources must extend. Requires that resources have a single numeric value, and then provides useful arithmetic and relational operators on that value.

   T

   the type of number the value is expressed in, e.g. Long or Double

   R

   self-referential type required to make all the operators work nicely

7. case class ResourceSet(cores: Cores = Cores.none, memory: Memory = Memory.none) extends Product with Serializable

   

   Holds information about a set of resources

8. abstract class Scheduler extends LazyLogging

   

   Scheduler of Task tasks

9. case class SystemResources(cores: Cores, systemMemory: Memory, jvmMemory: Memory) extends Product with Serializable

   

10. class TaskException extends Exception

    

    An exception that can be thrown when there is an error processing tasks, that encapsulates the thrown exception and a failure status to use.

11. class TaskExecutionInfo extends AnyRef

    

    The state of execution of a Task.

12. class TaskManager extends TaskManagerLike with TaskTracker with FinalStatusReporter with LazyLogging

    

    A manager of tasks.

    A manager of tasks.

    No validation of whether or not we actually have the provided system or in-Jvm resources will occur.

13. trait TaskTracker extends TaskManagerLike with LazyLogging

    

    Tracks tasks during their execution

14. trait Terminal extends AnyRef

    

15. class TopLikeStatusReporter extends Terminal

    

    Mix this trait into a dagr.core.execsystem.TaskManager to provide the refresh() method for a top-like status interface.