diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/MRClientProtocol.proto b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/MRClientProtocol.proto
index 83a946f4cee..3f09719ba9b 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/MRClientProtocol.proto
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/MRClientProtocol.proto
@@ -19,6 +19,7 @@
 option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "MRClientProtocol";
 option java_generic_services = true;
+package hadoop.mapreduce;
 
 import "Security.proto";
 import "mr_service_protos.proto";
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/mr_protos.proto b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/mr_protos.proto
index c0a4e92c5b5..b74eef63578 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/mr_protos.proto
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/mr_protos.proto
@@ -20,6 +20,7 @@ option java_package = "org.apache.hadoop.mapreduce.v2.proto";
 option java_outer_classname = "MRProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.mapreduce;
 
 import "yarn_protos.proto";
 
@@ -29,7 +30,7 @@ enum TaskTypeProto {
 }
 
 message JobIdProto {
-  optional ApplicationIdProto app_id = 1;
+  optional hadoop.yarn.ApplicationIdProto app_id = 1;
   optional int32 id = 2;
 }
 
@@ -115,7 +116,7 @@ message TaskAttemptReportProto {
   optional string node_manager_host = 12;
   optional int32 node_manager_port = 13;
   optional int32 node_manager_http_port = 14;
-  optional ContainerIdProto container_id = 15;
+  optional hadoop.yarn.ContainerIdProto container_id = 15;
 }
 
 enum JobStateProto {
@@ -148,9 +149,9 @@ message JobReportProto {
 }
 
 message AMInfoProto {
-  optional ApplicationAttemptIdProto application_attempt_id = 1;
+  optional hadoop.yarn.ApplicationAttemptIdProto application_attempt_id = 1;
   optional int64 start_time = 2;
-  optional ContainerIdProto container_id = 3;
+  optional hadoop.yarn.ContainerIdProto container_id = 3;
   optional string node_manager_host = 4;
   optional int32 node_manager_port = 5;
   optional int32 node_manager_http_port = 6;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/mr_service_protos.proto b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/mr_service_protos.proto
index ff965f30774..cb3c30c27a7 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/mr_service_protos.proto
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/proto/mr_service_protos.proto
@@ -20,6 +20,7 @@ option java_package = "org.apache.hadoop.mapreduce.v2.proto";
 option java_outer_classname = "MRServiceProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.mapreduce;
 
 import "Security.proto";
 import "mr_protos.proto";
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/proto/HSAdminRefreshProtocol.proto b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/proto/HSAdminRefreshProtocol.proto
index e23f0a15221..1f95ee1c633 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/proto/HSAdminRefreshProtocol.proto
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/proto/HSAdminRefreshProtocol.proto
@@ -20,6 +20,7 @@ option java_package = "org.apache.hadoop.mapreduce.v2.hs.proto";
 option java_outer_classname = "HSAdminRefreshProtocolProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.mapreduce;
 
 /**
  *  refresh admin acls request.
diff --git a/hadoop-yarn-project/CHANGES.txt b/hadoop-yarn-project/CHANGES.txt
index db353ccfa53..835349af01e 100644
--- a/hadoop-yarn-project/CHANGES.txt
+++ b/hadoop-yarn-project/CHANGES.txt
@@ -29,6 +29,10 @@ Release 2.1.1-beta - UNRELEASED
     YARN-707. Added user information also in the YARN ClientToken so that AMs
     can implement authorization based on incoming users. (Jason Lowe via vinodkv)
 
+    YARN-1170. YARN & MapReduce proto definitions fixed to specify protobuf
+    package as hadoop.yarn and hadoop.mapreduce respectively. (Binglin Chang
+    via acmurthy)
+
   NEW FEATURES
 
   IMPROVEMENTS
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/applicationclient_protocol.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/applicationclient_protocol.proto
index 3f76849de93..af18c879521 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/applicationclient_protocol.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/applicationclient_protocol.proto
@@ -26,6 +26,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "ApplicationClientProtocol";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "Security.proto";
 import "yarn_service_protos.proto";
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/applicationmaster_protocol.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/applicationmaster_protocol.proto
index f43209e48b9..d0e367291b5 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/applicationmaster_protocol.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/applicationmaster_protocol.proto
@@ -26,6 +26,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "ApplicationMasterProtocol";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "yarn_service_protos.proto";
 
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/containermanagement_protocol.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/containermanagement_protocol.proto
index 98f438aa993..7b1647b5a1d 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/containermanagement_protocol.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/containermanagement_protocol.proto
@@ -26,6 +26,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "ContainerManagementProtocol";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "yarn_service_protos.proto";
 
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/server/resourcemanager_administration_protocol.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/server/resourcemanager_administration_protocol.proto
index 53dda07b8a6..c59c6b61f1e 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/server/resourcemanager_administration_protocol.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/server/resourcemanager_administration_protocol.proto
@@ -26,6 +26,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "ResourceManagerAdministrationProtocol";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "server/yarn_server_resourcemanager_service_protos.proto";
 
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/server/yarn_server_resourcemanager_service_protos.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/server/yarn_server_resourcemanager_service_protos.proto
index 4cad0abdc33..eeb14791fed 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/server/yarn_server_resourcemanager_service_protos.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/server/yarn_server_resourcemanager_service_protos.proto
@@ -26,6 +26,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "YarnServerResourceManagerServiceProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "yarn_protos.proto";
 
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/yarn_protos.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/yarn_protos.proto
index a27cbb7cd51..f49b1653b9c 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/yarn_protos.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/yarn_protos.proto
@@ -26,6 +26,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "YarnProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "Security.proto";
 
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/yarn_service_protos.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/yarn_service_protos.proto
index 36e1d458efd..391019ade79 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/yarn_service_protos.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/yarn_service_protos.proto
@@ -26,6 +26,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "YarnServiceProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "Security.proto";
 import "yarn_protos.proto";
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/ResourceTracker.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/ResourceTracker.proto
index 6cb2f378724..1f91b6366a5 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/ResourceTracker.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/ResourceTracker.proto
@@ -20,6 +20,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "ResourceTracker";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "yarn_server_common_service_protos.proto";
 
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/yarn_server_common_protos.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/yarn_server_common_protos.proto
index 8a9a534ae1a..4f5d16895be 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/yarn_server_common_protos.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/yarn_server_common_protos.proto
@@ -20,6 +20,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "YarnServerCommonProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "yarn_protos.proto";
 
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/yarn_server_common_service_protos.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/yarn_server_common_service_protos.proto
index bc80971707b..f6d2526fb3e 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/yarn_server_common_service_protos.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/proto/yarn_server_common_service_protos.proto
@@ -20,6 +20,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "YarnServerCommonServiceProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "yarn_protos.proto";
 import "yarn_server_common_protos.proto";
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/proto/LocalizationProtocol.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/proto/LocalizationProtocol.proto
index 8fe4e988035..0f50dc3fd72 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/proto/LocalizationProtocol.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/proto/LocalizationProtocol.proto
@@ -20,6 +20,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "LocalizationProtocol";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "yarn_server_nodemanager_service_protos.proto";
 
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/proto/yarn_server_nodemanager_service_protos.proto b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/proto/yarn_server_nodemanager_service_protos.proto
index 166ea5b3702..6fde7cce867 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/proto/yarn_server_nodemanager_service_protos.proto
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/proto/yarn_server_nodemanager_service_protos.proto
@@ -20,6 +20,7 @@ option java_package = "org.apache.hadoop.yarn.proto";
 option java_outer_classname = "YarnServerNodemanagerServiceProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
+package hadoop.yarn;
 
 import "yarn_protos.proto";