nandakumar131 commented on a change in pull request #1291:
URL: https://github.com/apache/hadoop-ozone/pull/1291#discussion_r469468744



##########
File path: 
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/pipeline/PipelinePlacementPolicy.java
##########
@@ -163,9 +163,42 @@ int currentPipelineCount(DatanodeDetails datanodeDetails, 
int nodesRequired) {
       throw new SCMException(msg,
           SCMException.ResultCodes.FAILED_TO_FIND_SUITABLE_NODE);
     }
+
+    if (!checkAllNodesAreEqual(nodeManager.getClusterNetworkTopologyMap())) {
+      boolean multipleRacks = multipleRacksAvailable(healthyNodes);

Review comment:
       Should we also consider `excludedNodes` here?




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