@ParametersAreNonnullByDefault

Package org.apache.druid.server.coordinator.balancer

Interface Summary

Interface	Description
BalancerStrategy	Segment balancing strategy, used in every coordinator run by StrategicSegmentAssigner to choose optimal servers to load, move or drop a segment.

Class Summary

Class	Description
BalancerSegmentHolder	Represents a segment picked for moving by a balancer strategy.
BalancerStrategyFactory
CachingCostBalancerStrategy	Deprecated. This is currently being used only in tests for benchmarking purposes and will be removed in future releases.
CachingCostBalancerStrategyConfig
CachingCostBalancerStrategyFactory	Deprecated. This is currently being used only in tests for benchmarking purposes and will be removed in future releases.
ClusterCostCache
ClusterCostCache.Builder
CostBalancerStrategy
CostBalancerStrategyFactory
DisabledCachingCostBalancerStrategyFactory
DiskNormalizedCostBalancerStrategy	A BalancerStrategy which can be used when historicals in a tier have varying disk capacities.
DiskNormalizedCostBalancerStrategyFactory
RandomBalancerStrategy	A simple BalancerStrategy that assigns segments randomly amongst eligible servers performs no balancing
RandomBalancerStrategyFactory
ReservoirSegmentSampler
SegmentsCostCache	SegmentsCostCache provides faster way to calculate cost function proposed in CostBalancerStrategy.
SegmentsCostCache.Builder
SegmentToMoveCalculator	Calculates the maximum, minimum and required number of segments to move in a Coordinator run for balancing.
ServerCostCache
ServerCostCache.Builder
TierSegmentBalancer	Balances segments within the servers of a tier using the balancer strategy.