/
MPIAMRMAsyncHandler.java
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/
MPIAMRMAsyncHandler.java
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/**
*
*/
package org.apache.hadoop.yarn.mpi.server.handler;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.yarn.api.records.Container;
import org.apache.hadoop.yarn.api.records.ContainerStatus;
import org.apache.hadoop.yarn.api.records.NodeReport;
import org.apache.hadoop.yarn.client.api.async.AMRMClientAsync.CallbackHandler;
public class MPIAMRMAsyncHandler implements CallbackHandler {
private static final Log LOG = LogFactory.getLog(MPIAMRMAsyncHandler.class);
private final Map<String, Integer> hostToProcNum = new HashMap<String, Integer>();
private final Map<String, Container> hostToContainer = new HashMap<String, Container>();
private final List<Container> distinctContainers = new ArrayList<Container>();
public final List<Container> acquiredContainers = new ArrayList<Container>();
private final AtomicInteger acquiredContainersCount = new AtomicInteger(0);
private final AtomicInteger neededContainersCount = new AtomicInteger();
public int getAllocatedContainerNumber() {
return acquiredContainersCount.get();
}
/**
* @param count
* how many containers do we need?
*/
public void setNeededContainersCount(int count) {
neededContainersCount.set(count);
}
public Map<String, Integer> getHostToProcNum() {
return new HashMap<String, Integer>(hostToProcNum);
}
public List<Container> getDistinctContainers() {
return new ArrayList<Container>(distinctContainers);
}
public List<Container> getAcquiredContainers() {
return new ArrayList<Container>(acquiredContainers);
}
/*
* (non-Javadoc)
*
* @see
* org.apache.hadoop.yarn.client.api.async.AMRMClientAsync.CallbackHandler
* #onContainersCompleted(java.util.List)
*/
@Override
public void onContainersCompleted(List<ContainerStatus> statuses) {
for (ContainerStatus status : statuses) {
LOG.info("CompletedContainer: Id=" + status.getContainerId());
}
}
/*
* (non-Javadoc)
*
* @see
* org.apache.hadoop.yarn.client.api.async.AMRMClientAsync.CallbackHandler
* #onContainersAllocated(java.util.List)
*/
@Override
public void onContainersAllocated(List<Container> containers) {
for (Container acquiredContainer : containers) {
LOG.info("AcquiredContainer: Id=" + acquiredContainer.getId()
+ ", NodeId=" + acquiredContainer.getNodeId() + ", Host="
+ acquiredContainer.getNodeId().getHost());
acquiredContainers.add(acquiredContainer);
String host = acquiredContainer.getNodeId().getHost();
if (!hostToContainer.containsKey(host)) {
hostToContainer.put(host, acquiredContainer);
hostToProcNum.put(host, new Integer(1));
distinctContainers.add(acquiredContainer);
} else {
int procNum = hostToProcNum.get(host).intValue();
procNum++;
hostToProcNum.put(host, new Integer(procNum));
// TODO check if this works
// Container container = hostToContainer.get(host);
// allocatedContainer.setState(ContainerState.COMPLETE);
}
}
acquiredContainersCount.addAndGet(containers.size());
LOG.info("Current=" + acquiredContainersCount.get() + ", Needed="
+ neededContainersCount.get());
}
/*
* (non-Javadoc)
*
* @see
* org.apache.hadoop.yarn.client.api.async.AMRMClientAsync.CallbackHandler
* #onShutdownRequest()
*/
@Override
public void onShutdownRequest() {
// TODO Auto-generated method stub
}
/*
* (non-Javadoc)
*
* @see
* org.apache.hadoop.yarn.client.api.async.AMRMClientAsync.CallbackHandler
* #onNodesUpdated(java.util.List)
*/
@Override
public void onNodesUpdated(List<NodeReport> updatedNodes) {
// TODO Auto-generated method stub
}
/*
* (non-Javadoc)
*
* @see
* org.apache.hadoop.yarn.client.api.async.AMRMClientAsync.CallbackHandler
* #getProgress()
*/
@Override
public float getProgress() {
float neededTotal = neededContainersCount.get();
float acquiredTotal = acquiredContainersCount.get();
if (neededTotal == 0) {
return 0.0f;
} else {
return acquiredTotal / neededTotal;
}
}
/*
* (non-Javadoc)
*
* @see
* org.apache.hadoop.yarn.client.api.async.AMRMClientAsync.CallbackHandler
* #onError(java.lang.Throwable)
*/
@Override
public void onError(Throwable e) {
// TODO Auto-generated method stub
}
}