Package org.apache.storm.scheduler
Class IsolationScheduler
java.lang.Object
org.apache.storm.scheduler.IsolationScheduler
- All Implemented Interfaces:
INodeAssignmentSentCallBack,IScheduler
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionconfig()This function returns the scheduler's configuration.voidprepare(Map<String, Object> conf, StormMetricsRegistry metricsRegistry) voidschedule(Topologies topologies, Cluster cluster) Set assignments for the topologies which needs scheduling.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface org.apache.storm.scheduler.INodeAssignmentSentCallBack
nodeAssignmentSentMethods inherited from interface org.apache.storm.scheduler.IScheduler
cleanup
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Constructor Details
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IsolationScheduler
public IsolationScheduler()
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Method Details
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prepare
- Specified by:
preparein interfaceIScheduler
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config
Description copied from interface:ISchedulerThis function returns the scheduler's configuration.- Specified by:
configin interfaceIScheduler- Returns:
- The scheduler's configuration.
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schedule
Description copied from interface:ISchedulerSet assignments for the topologies which needs scheduling. The new assignments is available through `cluster.getAssignments()`- Specified by:
schedulein 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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