Package org.apache.storm.scheduler
Class EvenScheduler
java.lang.Object
org.apache.storm.scheduler.EvenScheduler
- All Implemented Interfaces:
INodeAssignmentSentCallBack
,IScheduler
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionconfig()
This function returns the scheduler's configuration.static Map<WorkerSlot,
List<ExecutorDetails>> getAliveAssignedWorkerSlotExecutors
(Cluster cluster, String topologyId) void
prepare
(Map<String, Object> conf, StormMetricsRegistry metricsRegistry) void
schedule
(Topologies topologies, Cluster cluster) Set assignments for the topologies which needs scheduling.static void
scheduleTopologiesEvenly
(Topologies topologies, Cluster cluster) static List<WorkerSlot>
sortSlots
(List<WorkerSlot> availableSlots) Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.apache.storm.scheduler.INodeAssignmentSentCallBack
nodeAssignmentSent
Methods inherited from interface org.apache.storm.scheduler.IScheduler
cleanup
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Constructor Details
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EvenScheduler
public EvenScheduler()
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Method Details
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sortSlots
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getAliveAssignedWorkerSlotExecutors
public static Map<WorkerSlot,List<ExecutorDetails>> getAliveAssignedWorkerSlotExecutors(Cluster cluster, String topologyId) -
scheduleTopologiesEvenly
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prepare
- Specified by:
prepare
in interfaceIScheduler
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schedule
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 interfaceIScheduler
- Parameters:
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()`
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config
Description copied from interface:IScheduler
This function returns the scheduler's configuration.- Specified by:
config
in interfaceIScheduler
- Returns:
- The scheduler's configuration.
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