org.apache.storm.scheduler.multitenant

Class NodePool.RoundRobinSlotScheduler

java.lang.Object

org.apache.storm.scheduler.multitenant.NodePool.RoundRobinSlotScheduler

Enclosing class:

NodePool

public static class NodePool.RoundRobinSlotScheduler
extends Object

Place executors into slots in a round robin way, taking into account component spreading among different hosts.

Constructor Summary

Constructors

Constructor and Description
RoundRobinSlotScheduler(TopologyDetails td, int slotsToUse, Cluster cluster) Create a new scheduler for a given topology.

Method Summary

Modifier and Type	Method and Description
boolean	assignSlotTo(Node n) Assign a slot to the given node.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RoundRobinSlotScheduler

public RoundRobinSlotScheduler(TopologyDetails td,
                               int slotsToUse,
                               Cluster cluster)

Create a new scheduler for a given topology.

Parameters:

td - the topology to schedule

slotsToUse - the number of slots to use for the executors left to schedule.

cluster - the cluster to schedule this on.

Method Detail

assignSlotTo

public boolean assignSlotTo(Node n)

Assign a slot to the given node.

Parameters:

n - the node to assign a slot to.

Returns:

true if there are more slots to assign else false.