org.apache.storm.scheduler.resource.strategies.scheduling

Class RoundRobinResourceAwareStrategy

java.lang.Object

org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy

org.apache.storm.scheduler.resource.strategies.scheduling.RoundRobinResourceAwareStrategy

All Implemented Interfaces:

IStrategy

public class RoundRobinResourceAwareStrategy
extends BaseResourceAwareStrategy

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy

BaseResourceAwareStrategy.NodeSortType

Field Summary

Fields inherited from class org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy

cluster, compToExecs, config, execSorter, execToComp, nodes, nodeSorter, nodeSortType, orderExecutorsByProximity, searcherState, sortNodesForEachExecutor, topologyDetails, topoName

Constructor Summary

Constructors

Constructor and Description
RoundRobinResourceAwareStrategy()

Method Summary

Modifier and Type	Method and Description
protected SchedulingResult	scheduleExecutorsOnNodes(List<ExecutorDetails> orderedExecutors, Iterable<String> sortedNodesIterable) For each component try to schedule executors in sequence on the nodes.

Methods inherited from class org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy

assignBoundAckersForNewWorkerSlot, checkSchedulingFeasibility, getMaxStateSearchFromTopoConf, hostnameToNodes, idToNode, isExecAssignmentToWorkerValid, isOrderByProximity, prepare, prepareForScheduling, schedule, setExecSorter, setNodeSorter

Methods inherited from class java.lang.Object

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

Constructor Detail

RoundRobinResourceAwareStrategy

public RoundRobinResourceAwareStrategy()

Method Detail

scheduleExecutorsOnNodes

protected SchedulingResult scheduleExecutorsOnNodes(List<ExecutorDetails> orderedExecutors,
                                                    Iterable<String> sortedNodesIterable)

For each component try to schedule executors in sequence on the nodes.

Overrides:

scheduleExecutorsOnNodes in class BaseResourceAwareStrategy

Parameters:

orderedExecutors - Executors sorted in the preferred order cannot be null

sortedNodesIterable - Node iterable which cannot be null, relies on behavior when BaseResourceAwareStrategy.sortNodesForEachExecutor is false

Returns:

SchedulingResult with success attribute set to true or false indicting whether ALL executors were assigned. @{#}