YARN-8830. SLS tool fix node addition. Contributed by Bibin A Chundatt.

hadoop-tools/hadoop-sls/src/main/java/org/apache/hadoop/yarn/sls/SLSRunner.java

@@ -45,6 +45,8 @@ import org.apache.commons.cli.CommandLineParser;
 import org.apache.commons.cli.GnuParser;
 import org.apache.commons.cli.Options;
 import org.apache.commons.cli.ParseException;
+import org.apache.commons.collections.SetUtils;
+import org.apache.commons.lang3.StringUtils;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
 import org.apache.hadoop.conf.Configuration;
@@ -1029,5 +1031,32 @@ public class SLSRunner extends Configured implements Tool {
     public void setLabels(Set<NodeLabel> labels) {
       this.labels = labels;
     }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) {
+        return true;
+      }
+      if (!(o instanceof NodeDetails)) {
+        return false;
+      }
+
+      NodeDetails that = (NodeDetails) o;
+
+      return StringUtils.equals(hostname, that.hostname) && (
+          nodeResource == null ?
+              that.nodeResource == null :
+              nodeResource.equals(that.nodeResource)) && SetUtils
+          .isEqualSet(labels, that.labels);
+    }
+
+    @Override
+    public int hashCode() {
+      int result = hostname == null ? 0 : hostname.hashCode();
+      result =
+          31 * result + (nodeResource == null ? 0 : nodeResource.hashCode());
+      result = 31 * result + (labels == null ? 0 : labels.hashCode());
+      return result;
+    }
   }
 }