private void addLeafTask(TaskAttemptToSchedulerEvent event) {
TaskAttempt taskAttempt = event.getTaskAttempt();
List<DataLocation> locations = taskAttempt.getTask().getDataLocations();
for (DataLocation location : locations) {
String host = location.getHost();
leafTaskHosts.add(host);
HostVolumeMapping hostVolumeMapping = leafTaskHostMapping.get(host);
if (hostVolumeMapping == null) {
String rack = RackResolver.resolve(host).getNetworkLocation();
hostVolumeMapping = new HostVolumeMapping(host, rack);
leafTaskHostMapping.put(host, hostVolumeMapping);
}
hostVolumeMapping.addTaskAttempt(location.getVolumeId(), taskAttempt);
if (LOG.isDebugEnabled()) {
LOG.debug("Added attempt req to host " + host);
}
HashSet<TaskAttemptId> list = leafTasksRackMapping.get(hostVolumeMapping.getRack());
if (list == null) {
list = new HashSet<>();
leafTasksRackMapping.put(hostVolumeMapping.getRack(), list);
}
list.add(taskAttempt.getId());
if (LOG.isDebugEnabled()) {
LOG.debug("Added attempt req to rack " + hostVolumeMapping.getRack());
}
}
leafTasks.add(taskAttempt.getId());
}
