sodonnel commented on code in PR #5588:
URL: https://github.com/apache/ozone/pull/5588#discussion_r1392525851
##########
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/scm/net/NetworkTopologyImpl.java:
##########
@@ -695,27 +695,33 @@ private Node chooseNodeInternal(String scope, int
leafIndex,
*/
@Override
public int getDistanceCost(Node node1, Node node2) {
- if ((node1 != null && node2 != null && node1.equals(node2)) ||
+ if ((node1 != null && node1.equals(node2)) ||
(node1 == null && node2 == null)) {
return 0;
}
if (node1 == null || node2 == null) {
LOG.warn("One of the nodes is a null pointer");
return Integer.MAX_VALUE;
}
+
+ // verify levels are in range
+ int level1 = node1.getLevel();
+ int level2 = node2.getLevel();
+ if (level1 < NetConstants.ROOT_LEVEL || level2 < NetConstants.ROOT_LEVEL) {
+ return Integer.MAX_VALUE;
+ }
+ if (level1 > maxLevel || level2 > maxLevel) {
+ return Integer.MAX_VALUE;
+ }
+
int cost = 0;
netlock.readLock().lock();
try {
- if ((node1.getAncestor(maxLevel - 1) != clusterTree) ||
- (node2.getAncestor(maxLevel - 1) != clusterTree)) {
+ if ((node1.getAncestor(level1 - 1) != clusterTree) ||
+ (node2.getAncestor(level2 - 1) != clusterTree)) {
Review Comment:
Ah I think it get it now. Asking for a nodes "Level - 1" should give the
root node, and if it does not it means the node is not in the tree.
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