ADHL-425: add Datanode Volume Failures alert

ambari-server/src/main/resources/stacks/ADH/1.0/services/HDFS/alerts.json

@@ -213,7 +213,7 @@
             "warning": {
               "text": "Total Blocks:[{1}], Missing Blocks:[{0}]",
               "value": 1
-            },          
+            },
             "critical": {
               "text": "Total Blocks:[{1}], Missing Blocks:[{0}]",
               "value": 1
@@ -275,6 +275,52 @@
           }
         }
       },
+      {
+        "name": "namenode_hdfs_volume_failures",
+        "label": "Datanode Volume Failures",
+        "description": "This service-level alert is triggered if the number of volume failures exceeds the configured critical threshold. The threshold values are in volumes.",
+        "interval": 2,
+        "scope": "ANY",
+        "enabled": true,
+        "source": {
+          "type": "METRIC",
+          "uri": {
+            "http": "{{hdfs-site/dfs.namenode.http-address}}",
+            "https": "{{hdfs-site/dfs.namenode.https-address}}",
+            "kerberos_keytab": "{{hdfs-site/dfs.web.authentication.kerberos.keytab}}",
+            "kerberos_principal": "{{hdfs-site/dfs.web.authentication.kerberos.principal}}",
+            "https_property": "{{hdfs-site/dfs.http.policy}}",
+            "https_property_value": "HTTPS_ONLY",
+            "connection_timeout": 5.0,
+            "high_availability": {
+              "nameservice": "{{hdfs-site/dfs.internal.nameservices}}",
+              "alias_key" : "{{hdfs-site/dfs.ha.namenodes.{{ha-nameservice}}}}",
+              "http_pattern" : "{{hdfs-site/dfs.namenode.http-address.{{ha-nameservice}}.{{alias}}}}",
+              "https_pattern" : "{{hdfs-site/dfs.namenode.https-address.{{ha-nameservice}}.{{alias}}}}"
+            }
+          },
+          "reporting": {
+            "ok": {
+              "text": "Failed Volumes:[{0}]"
+            },
+            "warning": {
+              "text": "Failed Volumes:[{0}]",
+              "value": 1
+            },
+            "critical": {
+              "text": "Failed Volumes:[{0}]",
+              "value": 1
+            },
+            "units" : "Volumes"
+          },
+          "jmx": {
+            "property_list": [
+              "Hadoop:service=NameNode,name=FSNamesystem/VolumeFailuresTotal"
+            ],
+            "value": "{0}"
+          }
+        }
+      },
       {
         "name": "namenode_hdfs_capacity_utilization",
         "label": "HDFS Capacity Utilization",
@@ -354,7 +400,7 @@
             "warning": {
               "text": "Average Queue Time:[{0}], Average Processing Time:[{1}]",
               "value": 3000
-            },          
+            },
             "critical": {
               "text": "Average Queue Time:[{0}], Average Processing Time:[{1}]",
               "value": 5000
@@ -1598,7 +1644,7 @@
           }
         }
       }
-    ],      
+    ],
     "DATANODE": [
       {
         "name": "datanode_process",