Class DefaultScheduler

All Implemented Interfaces:
INodeAssignmentSentCallBack, IScheduler

public class DefaultScheduler extends Object implements IScheduler
  • Constructor Details

    • DefaultScheduler

      public DefaultScheduler()
  • Method Details

    • slotsCanReassign

      public static Set<WorkerSlot> slotsCanReassign(Cluster cluster, Set<WorkerSlot> slots)
    • defaultSchedule

      public static void defaultSchedule(Topologies topologies, Cluster cluster)
    • prepare

      public void prepare(Map<String,Object> conf, StormMetricsRegistry metricsRegistry)
      Specified by:
      prepare in interface IScheduler
    • schedule

      public void schedule(Topologies topologies, Cluster cluster)
      Description copied from interface: IScheduler
      Set assignments for the topologies which needs scheduling. The new assignments is available through `cluster.getAssignments()`
      Specified by:
      schedule in interface IScheduler
      topologies - all the topologies in the cluster, some of them need schedule. Topologies object here only contain static information about topologies. Information like assignments, slots are all in the `cluster` object.
      cluster - the cluster these topologies are running in. `cluster` contains everything user need to develop a new scheduling logic. e.g. supervisors information, available slots, current assignments for all the topologies etc. User can set the new assignment for topologies using cluster.setAssignmentById()`
    • config

      public Map<String,Map<String,Double>> config()
      Description copied from interface: IScheduler
      This function returns the scheduler's configuration.
      Specified by:
      config in interface IScheduler
      The scheduler's configuration.