org.apache.hadoop.hbase.master.balancer

Class StochasticLoadBalancer.TableSkewCostFunction

java.lang.Object

org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.CostFunction

org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.TableSkewCostFunction

Enclosing class:

StochasticLoadBalancer

static class StochasticLoadBalancer.TableSkewCostFunction
extends StochasticLoadBalancer.CostFunction

Compute the cost of a potential cluster configuration based upon how evenly distributed tables are.

Field Summary

Fields

Modifier and Type	Field and Description
private static float	DEFAULT_TABLE_SKEW_COST
private static String	TABLE_SKEW_COST_KEY

Fields inherited from class org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.CostFunction

cluster

Constructor Summary

Constructors

Constructor and Description
TableSkewCostFunction(org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method and Description
(package private) double	cost()

Methods inherited from class org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.CostFunction

costFromArray, getMultiplier, init, isNeeded, postAction, regionMoved, scale, setMultiplier

Methods inherited from class java.lang.Object

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

Field Detail

TABLE_SKEW_COST_KEY

private static final String TABLE_SKEW_COST_KEY

See Also:

Constant Field Values

DEFAULT_TABLE_SKEW_COST

private static final float DEFAULT_TABLE_SKEW_COST

See Also:

Constant Field Values

Constructor Detail

TableSkewCostFunction

TableSkewCostFunction(org.apache.hadoop.conf.Configuration conf)

Method Detail

cost

double cost()

Specified by:

cost in class StochasticLoadBalancer.CostFunction