diff --git a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/datafactory.json b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/datafactory.json
index 917caf7f0037..e688f37b7e65 100644
--- a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/datafactory.json
+++ b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/datafactory.json
@@ -2216,6 +2216,13 @@
           {
             "$ref": "#/parameters/runId"
           },
+          {
+            "name": "isRecursive",
+            "description": "If true, cancel all the Child pipelines that are triggered by the current pipeline.",
+            "in": "query",
+            "required": false,
+            "type": "boolean"
+          },
           {
             "$ref": "#/parameters/api-version"
           }
@@ -3043,6 +3050,39 @@
         "message"
       ]
     },
+    "VariableDefinitionSpecification": {
+      "description": "Definition of all variables for an Pipeline.",
+      "type": "object",
+      "additionalProperties": {
+        "$ref": "#/definitions/VariableSpecification"
+      }
+    },
+    "VariableSpecification": {
+      "description": "Definition of a single variable for an pipeline.",
+      "type": "object",
+      "properties": {
+        "type": {
+          "type": "string",
+          "description": "Variable type.",
+          "enum": [
+            "String",
+            "Bool",
+            "Array"
+          ],
+          "x-ms-enum": {
+            "name": "VariableType",
+            "modelAsString": true
+          }
+        },
+        "defaultValue": {
+          "type": "object",
+          "description": "Default value of variable."
+        }
+      },
+      "required": [
+        "type"
+      ]
+    },
     "ParameterDefinitionSpecification": {
       "description": "Definition of all parameters for an entity.",
       "type": "object",
diff --git a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
index 8510a9e874f0..3f7733a434b5 100644
--- a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
+++ b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
@@ -25,6 +25,10 @@
           "$ref": "../datafactory.json#/definitions/ParameterDefinitionSpecification",
           "description": "List of parameters for pipeline."
         },
+        "variables": {
+          "$ref": "../datafactory.json#/definitions/VariableDefinitionSpecification",
+          "description": "List of variables for pipeline."
+        },
         "concurrency": {
           "type": "integer",
           "minimum": 1,
@@ -188,6 +192,10 @@
           "minimum": 30,
           "maximum": 86400
         },
+        "secureInput": {
+          "type": "boolean",
+          "description": "When set to true, input from activity is considered as secure and will not be logged to monitoring."
+        },
         "secureOutput": {
           "type": "boolean",
           "description": "When set to true, Output from activity is considered as secure and will not be logged to monitoring."
@@ -2854,7 +2862,7 @@
       ]
     },
     "FilterActivityTypeProperties": {
-      "description": "Fitler activity properties.",
+      "description": "Filter activity properties.",
       "properties": {
         "items": {
           "description": "Input array on which filter should be applied.",
@@ -2870,6 +2878,78 @@
         "items"
       ]
     },
+    "SetVariableActivity": {
+      "x-ms-discriminator-value": "SetVariable",
+      "description": "Set value for a Variable.",
+      "allOf": [
+        {
+          "$ref": "#/definitions/ControlActivity"
+        }
+      ],
+      "properties": {
+        "typeProperties": {
+          "description": "Set Variable activity properties.",
+          "x-ms-client-flatten": true,
+          "$ref": "#/definitions/SetVariableActivityTypeProperties"
+        }
+      },
+      "required": [
+        "typeProperties"
+      ]
+    },
+    "SetVariableActivityTypeProperties": {
+      "description": "SetVariable activity properties.",
+      "properties": {
+        "name": {
+          "description": "Name of the variable whose value needs to be set.",
+          "type": "string"
+        },
+        "value": {
+          "description": "Value to be set. Could be a static value or Expression",
+          "type": "object"
+        }
+      },
+      "required": [
+        "name",
+        "value"
+      ]
+    },
+    "AppendVariableActivity": {
+      "x-ms-discriminator-value": "AppendVariable",
+      "description": "Append value to a array Variable.",
+      "allOf": [
+        {
+          "$ref": "#/definitions/ControlActivity"
+        }
+      ],
+      "properties": {
+        "typeProperties": {
+          "description": "Append Variable activity properties.",
+          "x-ms-client-flatten": true,
+          "$ref": "#/definitions/AppendVariableActivityTypeProperties"
+        }
+      },
+      "required": [
+        "typeProperties"
+      ]
+    },
+    "AppendVariableActivityTypeProperties": {
+      "description": "AppendVariable activity properties.",
+      "properties": {
+        "name": {
+          "description": "Name of the variable to which value needs to be appended.",
+          "type": "string"
+        },
+        "value": {
+          "description": "Value to be appended. Could be a static value or Expression",
+          "type": "object"
+        }
+      },
+      "required": [
+        "name",
+        "value"
+      ]
+    },
     "DatabricksNotebookActivity": {
       "description": "DatabricksNotebook activity.",
       "x-ms-discriminator-value": "DatabricksNotebook",