private void updateStatus(DataNodeIdentifier oldNode, DataNodeIdentifier replacementNode) {
int segmentsPerSegmentGroup = coordinator.getSegmentsPerSegmentGroup();
DataNodeStatusPair oldPair = null;
DataNodeStatusPair newPair = null;
for (DataNodeStatusPair eachPair : datanodeStatuses) {
if (oldNode.equals(eachPair.getIdentifier())) {
oldPair = eachPair;
} else if (replacementNode.equals(eachPair.getIdentifier())) {
newPair = eachPair;
}
}
oldPair.getStatus().addStoredSegments(-1 * segmentsPerSegmentGroup);
newPair.getStatus().addStoredSegments(segmentsPerSegmentGroup);
datanodeStatuses.remove(oldPair);
datanodeStatuses.remove(newPair);
datanodeStatuses.add(oldPair);
datanodeStatuses.add(newPair);
}
