YARN-2907. SchedulerNode#toString should print all resource detail instead of only memory. (Contributed by Rohith)

(cherry picked from commit c732ed760e)

hadoop-yarn-project/CHANGES.txt

@@ -74,6 +74,9 @@ Release 2.7.0 - UNRELEASED
     YARN-2165. Added the sanity check for the numeric configuration values of
     the timeline service. (Vasanth kumar RJ via zjshen)
 
+    YARN-2907. SchedulerNode#toString should print all resource detail instead 
+    of only memory. (Rohith via junping_du)
+
   OPTIMIZATIONS
 
   BUG FIXES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.java

@@ -242,9 +242,8 @@ public abstract class SchedulerNode {
   @Override
   public String toString() {
     return "host: " + rmNode.getNodeAddress() + " #containers="
-        + getNumContainers() + " available="
-        + getAvailableResource().getMemory() + " used="
-        + getUsedResource().getMemory();
+        + getNumContainers() + " available=" + getAvailableResource()
+        + " used=" + getUsedResource();
   }
 
   /**

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestWorkPreservingRMRestart.java

@@ -214,6 +214,14 @@ public class TestWorkPreservingRMRestart {
     AbstractYarnScheduler scheduler =
         (AbstractYarnScheduler) rm2.getResourceScheduler();
     SchedulerNode schedulerNode1 = scheduler.getSchedulerNode(nm1.getNodeId());
+    assertTrue(
+        "SchedulerNode#toString is not in expected format",
+        schedulerNode1
+        .toString().contains(schedulerNode1.getAvailableResource().toString()));
+    assertTrue(
+        "SchedulerNode#toString is not in expected format",
+        schedulerNode1
+        .toString().contains(schedulerNode1.getUsedResource().toString()));
 
     // ********* check scheduler node state.*******
     // 2 running containers.