org.apache.storm.scheduler.multitenant

Class MultitenantScheduler

java.lang.Object

org.apache.storm.scheduler.multitenant.MultitenantScheduler

All Implemented Interfaces:

INodeAssignmentSentCallBack, IScheduler

public class MultitenantScheduler
extends Object
implements IScheduler

Field Summary

Fields

Modifier and Type	Field and Description
protected IConfigLoader	configLoader

Constructor Summary

Constructors

Constructor and Description
MultitenantScheduler()

Method Summary

Modifier and Type	Method and Description
Map<String,Number>	config() This function returns the scheduler’s configuration.
void	prepare(Map<String,Object> conf, StormMetricsRegistry metricsRegistry)
void	schedule(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, wait

Methods inherited from interface org.apache.storm.scheduler.IScheduler

cleanup

Methods inherited from interface org.apache.storm.scheduler.INodeAssignmentSentCallBack

nodeAssignmentSent

Field Detail

configLoader

protected IConfigLoader configLoader

Constructor Detail

MultitenantScheduler

public MultitenantScheduler()

Method Detail

prepare

public void prepare(Map<String,Object> conf,
                    StormMetricsRegistry metricsRegistry)

Specified by:

prepare in interface IScheduler

config

public Map<String,Number> config()

Description copied from interface: IScheduler

This function returns the scheduler’s configuration.

Specified by:

config in interface IScheduler

Returns:

The scheduler’s configuration.

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

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()`