org.apache.hadoop.hbase.master.balancer

Class MemStoreSizeCostFunction

java.lang.Object

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

org.apache.hadoop.hbase.master.balancer.CostFromRegionLoadFunction

org.apache.hadoop.hbase.master.balancer.CostFromRegionLoadAsRateFunction

org.apache.hadoop.hbase.master.balancer.MemStoreSizeCostFunction

@InterfaceAudience.Private
class MemStoreSizeCostFunction
extends CostFromRegionLoadAsRateFunction

Compute the cost of total memstore size. The more unbalanced the higher the computed cost will be. This uses a rolling average of regionload.

Field Summary

Fields

Modifier and Type	Field and Description
private static float	DEFAULT_MEMSTORE_SIZE_COST
private static String	MEMSTORE_SIZE_COST_KEY

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

cluster, COST_EPSILON

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
protected double	getCostFromRl(BalancerRegionLoad rl)

Methods inherited from class org.apache.hadoop.hbase.master.balancer.CostFromRegionLoadAsRateFunction

getRegionLoadCost

Methods inherited from class org.apache.hadoop.hbase.master.balancer.CostFromRegionLoadFunction

cost, prepare, regionMoved

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

getMultiplier, isNeeded, postAction, scale, setMultiplier, updateWeight

Methods inherited from class java.lang.Object

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

Field Detail

MEMSTORE_SIZE_COST_KEY

private static final String MEMSTORE_SIZE_COST_KEY

See Also:

Constant Field Values

DEFAULT_MEMSTORE_SIZE_COST

private static final float DEFAULT_MEMSTORE_SIZE_COST

See Also:

Constant Field Values

Constructor Detail

MemStoreSizeCostFunction

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

Method Detail

getCostFromRl

protected double getCostFromRl(BalancerRegionLoad rl)

Specified by:

getCostFromRl in class CostFromRegionLoadFunction