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

Class ConstraintSolverStrategy.ConstraintConfig

java.lang.Object

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

Enclosing class:

ConstraintSolverStrategy

public static final class ConstraintSolverStrategy.ConstraintConfig
extends Object

Component constraint as derived from configuration. This is backward compatible and can parse old style Config.TOPOLOGY_RAS_CONSTRAINTS and Config.TOPOLOGY_SPREAD_COMPONENTS. New style Config.TOPOLOGY_RAS_CONSTRAINTS is map where each component has a list of other incompatible components and an optional number that specifies the maximum co-location count for the component on a node.

comp-1 cannot exist on same worker as comp-2 or comp-3, and at most "2" comp-1 on same node

comp-2 and comp-4 cannot be on same worker (missing comp-1 is implied from comp-1 constraint)

{ “comp-1”: { “maxNodeCoLocationCnt”: 2, “incompatibleComponents”: [“comp-2”, “comp-3” ] }, “comp-2”: { “incompatibleComponents”: [ “comp-4” ] } }

Method Summary

Modifier and Type	Method and Description
Map<String,Set<String>>	getIncompatibleComponents()
Map<String,Integer>	getMaxCoLocationCnts()

Methods inherited from class java.lang.Object

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

Method Detail

getIncompatibleComponents

public Map<String,Set<String>> getIncompatibleComponents()

getMaxCoLocationCnts

public Map<String,Integer> getMaxCoLocationCnts()