[GitHub] [ozone] swamirishi commented on a diff in pull request #3606: HDDS-7015. Failures while choosing nodes for creating container

[GitBox <gi...@apache.org>]

swamirishi commented on code in PR #3606:
URL: https://github.com/apache/ozone/pull/3606#discussion_r924145356


##########
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/SCMContainerPlacementRackScatter.java:
##########
@@ -143,10 +147,12 @@ public List<DatanodeDetails> chooseDatanodes(
 
     List<Node> toChooseRacks = new LinkedList<>();
     Set<DatanodeDetails> chosenNodes = new LinkedHashSet<>();
-    List<Node> unavailableNodes = new ArrayList<>();
     Set<Node> skippedRacks = new HashSet<>();
     if (excludedNodes != null) {
-      unavailableNodes.addAll(excludedNodes);
+      unavailableNodes.addAll(
+              excludedNodes.stream()
+                      .filter(node->!unavailableNodes.contains(node))
+                      .collect(Collectors.toList()));
     }

Review Comment:
   I am just adding the nodes which might not have come as part of the available nodes list.



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