public DataNodeActivityMBean(final MetricsRegistry mr, final String storageId) {
super(mr, "Activity statistics at the DataNode");
String storageName;
if (storageId.equals("")) { // Temp fix for the uninitialized storage
storageName = "UndefinedStorageId" + rand.nextInt();
} else {
storageName = storageId;
}
mbeanName = MBeanUtil.registerMBean("DataNode", "DataNodeActivity-" + storageName, this);
}
public void shutdown() {
if (mbeanName != null) MBeanUtil.unregisterMBean(mbeanName);
if (volumes != null) {
for (FSVolume volume : volumes.volumes) {
if (volume != null) {
volume.dfsUsage.shutdown();
}
}
}
}
/**
* Register the FSDataset MBean using the name
* "hadoop:service=DataNode,name=FSDatasetState-<storageid>"
*/
void registerMBean(final String storageId) {
// We wrap to bypass standard mbean naming convetion.
// This wraping can be removed in java 6 as it is more flexible in
// package naming for mbeans and their impl.
StandardMBean bean;
String storageName;
if (storageId == null || storageId.equals("")) { // Temp fix for the
// uninitialized storage
storageName = "UndefinedStorageId" + rand.nextInt();
} else {
storageName = storageId;
}
try {
bean = new StandardMBean(this, FSDatasetMBean.class);
mbeanName = MBeanUtil.registerMBean("DataNode", "FSDatasetState-" + storageName, bean);
} catch (NotCompliantMBeanException e) {
e.printStackTrace();
}
DataNode.LOG.info("Registered FSDatasetStatusMBean");
}
public void shutdown() {
if (mbeanName != null) MBeanUtil.unregisterMBean(mbeanName);
}