public void releaseTaskAttempt(TaskAttempt taskAttempt) {
if (taskAttempt.isLeafTask() && taskAttempt.getWorkerConnectionInfo() != null) {
HostVolumeMapping mapping =
scheduledRequests.leafTaskHostMapping.get(
taskAttempt.getWorkerConnectionInfo().getHost());
if (mapping != null && mapping.lastAssignedVolumeId.containsKey(taskAttempt.getId())) {
mapping.decreaseConcurrency(mapping.lastAssignedVolumeId.remove(taskAttempt.getId()));
}
}
}
