org.gridgain.grid.kernal.processors.hadoop.planner

Class GridHadoopDefaultMapReducePlanner

java.lang.Object

org.gridgain.grid.kernal.processors.hadoop.planner.GridHadoopDefaultMapReducePlanner

All Implemented Interfaces:

org.gridgain.grid.hadoop.GridHadoopMapReducePlanner

public class GridHadoopDefaultMapReducePlanner
extends Object
implements org.gridgain.grid.hadoop.GridHadoopMapReducePlanner

Default map-reduce planner implementation.

Constructor Summary

Constructors

Constructor and Description
GridHadoopDefaultMapReducePlanner()

Method Summary

Methods

Modifier and Type	Method and Description
org.gridgain.grid.hadoop.GridHadoopMapReducePlan	preparePlan(org.gridgain.grid.hadoop.GridHadoopJob job, Collection<org.gridgain.grid.GridNode> top, org.gridgain.grid.hadoop.GridHadoopMapReducePlan oldPlan)
protected int	reducerNodeWeight(org.gridgain.grid.GridNode node, int splitCnt) Calculate node weight based on node metrics and data co-location.

Methods inherited from class java.lang.Object

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

Constructor Detail

GridHadoopDefaultMapReducePlanner

public GridHadoopDefaultMapReducePlanner()

Method Detail

preparePlan

public org.gridgain.grid.hadoop.GridHadoopMapReducePlan preparePlan(org.gridgain.grid.hadoop.GridHadoopJob job,
                                                           Collection<org.gridgain.grid.GridNode> top,
                                                           @Nullable
                                                           org.gridgain.grid.hadoop.GridHadoopMapReducePlan oldPlan)
                                                             throws org.gridgain.grid.GridException

Specified by:

preparePlan in interface org.gridgain.grid.hadoop.GridHadoopMapReducePlanner

Throws:

org.gridgain.grid.GridException

reducerNodeWeight

protected int reducerNodeWeight(org.gridgain.grid.GridNode node,
                    int splitCnt)

Calculate node weight based on node metrics and data co-location.

Parameters:

node - Node.

splitCnt - Splits mapped to this node.

Returns:

Node weight.