How to use

getInServiceXceiverAverage

method

in

org.apache.hadoop.hdfs.server.blockmanagement.FSClusterStats

/**
 * Determine if a datanode should be chosen based on current workload.
 *
 * @param node The target datanode
 * @return Return true if the datanode should be excluded, otherwise false
 */
boolean excludeNodeByLoad(DatanodeDescriptor node){
 final double maxLoad = considerLoadFactor *
   stats.getInServiceXceiverAverage();
 final int nodeLoad = node.getXceiverCount();
 if ((nodeLoad > maxLoad) && (maxLoad > 0)) {
  logNodeIsNotChosen(node, NodeNotChosenReason.NODE_TOO_BUSY,
    "(load: " + nodeLoad + " > " + maxLoad + ")");
  return true;
 }
 return false;
}

private static double getInServiceXceiverAverage(FSNamesystem fsn) {
 return fsn.getBlockManager().getDatanodeManager().getFSClusterStats()
  .getInServiceXceiverAverage();
}

.getInServiceXceiverAverage(), EPSILON);
.getInServiceXceiverAverage(), EPSILON);

final double maxLoad = 2.0 * stats.getInServiceXceiverAverage();
final int nodeLoad = node.getXceiverCount();
if (nodeLoad > maxLoad) {

final double maxLoad = 2.0 * stats.getInServiceXceiverAverage();
final int nodeLoad = node.getXceiverCount();
if (nodeLoad > maxLoad) {