YARN-4823. Refactor the nested reservation id field in listReservation to simple string field. (subru via asuresh)

(cherry picked from commit 00bebb7e58)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/ReservationIdInfo.java

@@ -1,64 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.hadoop.yarn.server.resourcemanager.webapp.dao;
-
-import org.apache.hadoop.yarn.api.records.ReservationId;
-
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-
-/**
- * Simple class that represent a reservation ID.
- */
-@XmlRootElement
-@XmlAccessorType(XmlAccessType.FIELD)
-public class ReservationIdInfo {
-  @XmlElement(name = "cluster-timestamp")
-  private long clusterTimestamp;
-
-  @XmlElement(name = "reservation-id")
-  private long reservationId;
-
-  public ReservationIdInfo() {
-    this.clusterTimestamp = 0;
-    this.reservationId = 0;
-  }
-
-  public ReservationIdInfo(ReservationId reservationId) {
-    this.clusterTimestamp = reservationId.getClusterTimestamp();
-    this.reservationId = reservationId.getId();
-  }
-
-  public long getClusterTimestamp() {
-    return this.clusterTimestamp;
-  }
-
-  public void setClusterTimestamp(long newClusterTimestamp) {
-    this.clusterTimestamp = newClusterTimestamp;
-  }
-
-  public long getReservationId() {
-    return this.reservationId;
-  }
-
-  public void setReservationId(long newReservationId) {
-    this.reservationId = newReservationId;
-  }
-}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/ReservationInfo.java

@@ -44,7 +44,7 @@ public class ReservationInfo {
   private List<ResourceAllocationInfo> resourceAllocations = new ArrayList<>();
 
   @XmlElement(name = "reservation-id")
-  private ReservationIdInfo reservationId;
+  private String reservationId;
 
   @XmlElement(name = "reservation-definition")
   private ReservationDefinitionInfo reservationDefinition;
@@ -55,7 +55,6 @@ public class ReservationInfo {
     user = "";
 
     reservationDefinition = new ReservationDefinitionInfo();
-    reservationId = new ReservationIdInfo();
   }
 
   public ReservationInfo(ReservationAllocationState allocation, boolean
@@ -74,7 +73,7 @@ public class ReservationInfo {
       }
     }
 
-    reservationId = new ReservationIdInfo(allocation.getReservationId());
+    reservationId = allocation.getReservationId().toString();
     reservationDefinition = new ReservationDefinitionInfo(
             allocation.getReservationDefinition());
   }
@@ -95,7 +94,7 @@ public class ReservationInfo {
     return resourceAllocations;
   }
 
-  public ReservationIdInfo getReservationId() {
+  public String getReservationId() {
     return reservationId;
   }
 

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

@@ -714,9 +714,8 @@ public class TestRMWebServicesReservation extends JerseyTestBase {
 
     testRDLHelper(reservations);
 
-    long reservationId = reservations.getJSONObject("reservation-id")
+    String reservationId = reservations.getString("reservation-id");
-            .getLong("reservation-id");
+    assertEquals(id1.toString(), reservationId);
-    assertEquals(id1.getId(), reservationId);
 
     rm.stop();
   }
@@ -769,9 +768,8 @@ public class TestRMWebServicesReservation extends JerseyTestBase {
 
     testRDLHelper(reservations);
 
-    long reservationId = reservations.getJSONObject("reservation-id")
+    String reservationId = reservations.getString("reservation-id");
-            .getLong("reservation-id");
+    assertEquals(id1.toString(), reservationId);
-    assertEquals(id1.getId(), reservationId);
 
     assertTrue(reservations.has("resource-allocations"));
 
@@ -804,9 +802,8 @@ public class TestRMWebServicesReservation extends JerseyTestBase {
 
     testRDLHelper(reservations);
 
-    long reservationId = reservations.getJSONObject("reservation-id")
+    String reservationId = reservations.getString("reservation-id");
-            .getLong("reservation-id");
+    assertEquals(id1.toString(), reservationId);
-    assertEquals(id1.getId(), reservationId);
 
     assertTrue(!reservations.has("resource-allocations"));
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/ResourceManagerRest.md

@@ -3147,7 +3147,7 @@ The Cluster Reservation API can be used to list reservations. When listing reser
 |:---- |:---- |:---- |
 | acceptance-time | long | Time that the reservation was accepted |
 | resource-allocations | array of ResourceAllocationInfo(JSON) / zero or more ResourceAllocationInfo objects(XML) | Resource allocation information for the reservation |
-| reservation-id | A single ReservationId object | The unique reservation identifier |
+| reservation-id | A single ReservationId string | The unique reservation identifier |
 | reservation-definition | A single ReservationDefinition Object | A set of constraints representing the need for resources over time of a user |
 | user | string | User who made the reservation |
 
@@ -3159,21 +3159,14 @@ The Cluster Reservation API can be used to list reservations. When listing reser
 | startTime | long | Start time that the resource is allocated for |
 | endTime | long | End time that the resource is allocated for |
 
-### elements of the  *resource* object
+### Elements of the  *resource* object
 
 | Item | Data Type | Description |
 |:---- |:---- |:---- |
 | memory | int | The memory allocated for the reservation allocation |
 | vCores | int | The number of cores allocated for the reservation allocation |
 
-### Elements of the *reservation-id* object
+### Elements of the *reservation-definition* object
-
-| Item | Data Type | Description |
-|:---- |:---- |:---- |
-| cluster-timestamp | long | Timestamp representing the time the reservation was created |
-| reservation-id | long | The id of the reservation that was listed |
-
-Elements of the *reservation-definition* object
 
 | Item | Data Type | Description |
 |:---- |:---- |:---- |
@@ -3182,14 +3175,14 @@ Elements of the *reservation-definition* object
 | reservation-name | string | A mnemonic name of the reservaiton (not a valid identifier). |
 | reservation-requests | object | A list of "stages" or phases of this reservation, each describing resource requirements and duration |
 
-Elements of the *reservation-requests* object
+### Elements of the *reservation-requests* object
 
 | Item | Data Type | Description |
 |:---- |:---- |:---- |
 | reservation-request-interpreter | int | A numeric choice of how to interpret the set of ReservationRequest: 0 is an ANY, 1 for ALL, 2 for ORDER, 3 for ORDER\_NO\_GAP |
 | reservation-request | object | The description of the resource and time capabilities for a phase/stage of this reservation |
 
-Elements of the *reservation-request* object
+### Elements of the *reservation-request* object
 
 | Item | Data Type | Description |
 |:---- |:---- |:---- |
@@ -3253,10 +3246,7 @@ Response Body:
         "endTime": "1465542252000"
       }
     ],
-    "reservation-id": {
+    "reservation-id": "reservation_1458852875788_0002",
-      "cluster-timestamp": "1455133859510",
-      "reservation-id": "6"
-    },
     "reservation-definition": {
       "arrival": "1465541532000",
       "deadline": "1465542252000",
@@ -3318,10 +3308,7 @@ Response Body:
             <startTime>1465542251000</startTime>
             <endTime>1465542252000</endTime>
         </resource-allocations>
-        <reservation-id>
+        <reservation-id>reservation_1458852875788_0002</reservation-id>
-            <cluster-timestamp>1455228059846</cluster-timestamp>
-            <reservation-id>1</reservation-id>
-        </reservation-id>
         <reservation-definition>
             <arrival>1465541532000</arrival>
             <deadline>1465542252000</deadline>