public class LeaderBytesInDistributionGoal extends AbstractGoal
Goal.ClusterModelStatsComparator
_balancingConstraint, _finished, _minMonitoredPartitionPercentage, _numWindows, _succeeded
Constructor and Description |
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LeaderBytesInDistributionGoal() |
Modifier and Type | Method and Description |
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ActionAcceptance |
actionAcceptance(BalancingAction action,
ClusterModel clusterModel)
An action is acceptable if it does not move the leader bytes in above the threshold for leader bytes in.
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protected java.util.SortedSet<Broker> |
brokersToBalance(ClusterModel clusterModel)
Get sorted brokers that the rebalance process will go over to apply balancing actions to replicas they contain.
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ModelCompletenessRequirements |
clusterModelCompletenessRequirements()
Specify the load requirements for this goal.
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Goal.ClusterModelStatsComparator |
clusterModelStatsComparator()
Get an instance of
Goal.ClusterModelStatsComparator for this goal. |
void |
finish()
Signal for finishing the process for rebalance or self-healing for this goal.
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protected void |
initGoalState(ClusterModel clusterModel,
OptimizationOptions optimizationOptions)
Initialize states that this goal requires -- e.g.
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boolean |
isHardGoal()
True if this is a hard goal, false otherwise.
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java.lang.String |
name()
Get the name of this goal.
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protected void |
rebalanceForBroker(Broker broker,
ClusterModel clusterModel,
java.util.Set<Goal> optimizedGoals,
OptimizationOptions optimizationOptions)
Rebalance the given broker without violating the constraints of the current goal and optimized goals.
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protected boolean |
selfSatisfied(ClusterModel clusterModel,
BalancingAction action)
Check if requirements of this goal are not violated if this action is applied to the given cluster state,
false otherwise.
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protected void |
updateGoalState(ClusterModel clusterModel,
java.util.Set<java.lang.String> excludedTopics)
Update goal state after one round of self-healing / rebalance.
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configure, maybeApplyBalancingAction, maybeMoveReplicaBetweenDisks, optimize, shouldExclude, toString
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
canChangeReplicationFactor
public ActionAcceptance actionAcceptance(BalancingAction action, ClusterModel clusterModel)
action
- Action to be checked for acceptance.clusterModel
- State of the cluster before application of the action.ActionAcceptance.ACCEPT
if the action is acceptable by this goal,
ActionAcceptance.REPLICA_REJECT
otherwise.public Goal.ClusterModelStatsComparator clusterModelStatsComparator()
Goal
Goal.ClusterModelStatsComparator
for this goal.
The Goal.ClusterModelStatsComparator.compare(ClusterModelStats, ClusterModelStats)
method should give a
preference between two ClusterModelStats
.
Cruise Control will not reuse the returned instance.
The returned value must not be null.public ModelCompletenessRequirements clusterModelCompletenessRequirements()
Goal
public java.lang.String name()
Goal
name
in interface Goal
name
in class AbstractGoal
public boolean isHardGoal()
Goal
protected java.util.SortedSet<Broker> brokersToBalance(ClusterModel clusterModel)
AbstractGoal
brokersToBalance
in class AbstractGoal
clusterModel
- The state of the cluster.protected boolean selfSatisfied(ClusterModel clusterModel, BalancingAction action)
AbstractGoal
selfSatisfied
in class AbstractGoal
clusterModel
- The state of the cluster.action
- Action containing information about potential modification to the given cluster model.protected void initGoalState(ClusterModel clusterModel, OptimizationOptions optimizationOptions)
AbstractGoal
initGoalState
in class AbstractGoal
clusterModel
- The state of the cluster.optimizationOptions
- Options to take into account during optimization -- e.g. excluded topics.public void finish()
Goal
protected void updateGoalState(ClusterModel clusterModel, java.util.Set<java.lang.String> excludedTopics)
AbstractGoal
updateGoalState
in class AbstractGoal
clusterModel
- The state of the cluster.excludedTopics
- The topics that should be excluded from the optimization action.protected void rebalanceForBroker(Broker broker, ClusterModel clusterModel, java.util.Set<Goal> optimizedGoals, OptimizationOptions optimizationOptions)
AbstractGoal
rebalanceForBroker
in class AbstractGoal
broker
- Broker to be balanced.clusterModel
- The state of the cluster.optimizedGoals
- Optimized goals.optimizationOptions
- Options to take into account during optimization -- e.g. excluded topics.