set hdfs datanode to 3

Author: cgiraldo

charts/hdfs/Chart.yaml

@@ -11,4 +11,4 @@ maintainers:
 name: hdfs
 sources:
 - https://github.com/apache/hadoop
-version: 0.1.1
+version: 0.1.2

charts/hdfs/README.md

@@ -46,8 +46,8 @@ The following table lists the configurable parameters of the Hadoop chart and th
 | antiAffinity | string | `"soft"` |  |
 | conf.coreSite | string | `nil` |  |
 | conf.hdfsSite."dfs.replication" | int | `3` |  |
-| dataNode.pdbMinAvailable | int | `1` |  |
-| dataNode.replicas | int | `1` |  |
+| dataNode.pdbMinAvailable | int | `3` |  |
+| dataNode.replicas | int | `3` |  |
 | dataNode.resources.limits.cpu | string | `"1000m"` |  |
 | dataNode.resources.limits.memory | string | `"2048Mi"` |  |
 | dataNode.resources.requests.cpu | string | `"10m"` |  |
@@ -73,6 +73,7 @@ The following table lists the configurable parameters of the Hadoop chart and th
 | ingress.nameNode.hosts[0] | string | `"hdfs-namenode.local"` |  |
 | ingress.nameNode.labels | object | `{}` |  |
 | ingress.nameNode.path | string | `"/"` |  |
+| nameNode.replicas | int | `1` |  |
 | nameNode.pdbMinAvailable | int | `1` |  |
 | nameNode.port | int | `8020` |  |
 | nameNode.resources.limits.cpu | string | `"1000m"` |  |

charts/hdfs/templates/hdfs-nn-statefulset.yaml

@@ -15,7 +15,7 @@ spec:
       app.kubernetes.io/component: namenode
       {{- include "hdfs.labels" . | nindent 6 }}
   serviceName: {{ include "hdfs.fullname" . }}-namenode  
-  replicas: 1
+  replicas: {{ .Values.nameNode.replicas }}
   template:
     metadata:
       labels:

charts/hdfs/values.yaml

@@ -22,8 +22,9 @@ httpfs:
   adminPort: 14001
 
 nameNode:
-  port: 8020
+  replicas: 1
   pdbMinAvailable: 1
+  port: 8020
   resources:
     requests:
       memory: "256Mi"
@@ -32,8 +33,8 @@ nameNode:
       memory: "2048Mi"
       cpu: "1000m"
 dataNode:
-  replicas: 1
-  pdbMinAvailable: 1
+  replicas: 3
+  pdbMinAvailable: 3
   resources:
     requests:
       memory: "256Mi"