adoroszlai commented on code in PR #5726:
URL: https://github.com/apache/ozone/pull/5726#discussion_r1423724346


##########
hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/TestSCMContainerPlacementRackAware.java:
##########
@@ -563,6 +574,69 @@ public void 
testvalidateContainerPlacementSingleRackCluster() {
     assertEquals(0, stat.misReplicationCount());
   }
 
+  @ParameterizedTest
+  @MethodSource("decommissionNodeStates")

Review Comment:
   Nit: can use existing method from `NodeStatus`:
   
   
https://github.com/apache/ozone/blob/698e2f4ffc2fd60a6164ffd541e7400d4fa2a727/hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/node/NodeStatus.java#L60-L62
   
   as already used in:
   
   
https://github.com/apache/ozone/blob/698e2f4ffc2fd60a6164ffd541e7400d4fa2a727/hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/replication/TestRatisContainerReplicaCount.java#L212-L214
   
   (`MethodSource` allows any collection (does not have to use `Stream`), and 
for single parameter we can use the type directly, no need to wrap i 
n`Arguments`.)
   
   ```suggestion
     
@MethodSource("org.apache.hadoop.hdds.scm.node.NodeStatus#decommissionStates")
   ```



##########
hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/TestSCMContainerPlacementRackScatter.java:
##########
@@ -569,6 +579,67 @@ public void testValidateContainerPlacement(int 
datanodeCount) {
     assertEquals(0, stat.misReplicationCount());
   }
 
+  @ParameterizedTest
+  @MethodSource("decommissionNodeStates")

Review Comment:
   ```suggestion
     
@MethodSource("org.apache.hadoop.hdds.scm.node.NodeStatus#decommissionStates")
   ```



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