StochasticLoadBalancer.ReadRequestCostFunction (Apache HBase 1.2.12 API)

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Detail:
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java.lang.Object
- org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.CostFunction
- - org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.CostFromRegionLoadFunction
  - - org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.ReadRequestCostFunction

Enclosing class:

StochasticLoadBalancer
```
static class StochasticLoadBalancer.ReadRequestCostFunction
extends StochasticLoadBalancer.CostFromRegionLoadFunction
```
Compute the cost of total number of read requests 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_READ_REQUEST_COST
  
  private static String READ_REQUEST_COST_KEY
  - Fields inherited from class org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.CostFunction
    cluster
- Constructor Summary
  
  Constructors
  Constructor and Description
  
  StochasticLoadBalancer.ReadRequestCostFunction(org.apache.hadoop.conf.Configuration conf)
- Method Summary
  
  Methods
  Modifier and Type Method and Description
  
  protected double getCostFromRl(RegionLoad rl)
  - Methods inherited from class org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.CostFromRegionLoadFunction
    cost, getRegionLoadCost, setClusterStatus, setLoads
  - Methods inherited from class org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.CostFunction
    costFromArray, getMultiplier, init, postAction, regionMoved, scale, setMultiplier
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - READ_REQUEST_COST_KEY
```
private static final String READ_REQUEST_COST_KEY
```
    See Also:
    Constant Field Values
  - DEFAULT_READ_REQUEST_COST
```
private static final float DEFAULT_READ_REQUEST_COST
```
    See Also:
    Constant Field Values
- Constructor Detail
  - StochasticLoadBalancer.ReadRequestCostFunction
```
StochasticLoadBalancer.ReadRequestCostFunction(org.apache.hadoop.conf.Configuration conf)
```
- Method Detail
  - getCostFromRl
```
protected double getCostFromRl(RegionLoad rl)
```
    Specified by:
    
    getCostFromRl in class StochasticLoadBalancer.CostFromRegionLoadFunction

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