HDFS-11375. Display the volume storage type in datanode UI. Contributed by Surendra Singh Lilhore

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java

@@ -2606,6 +2606,7 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
     final long reservedSpaceForReplicas; // size of space reserved RBW or
                                     // re-replication
     final long numBlocks;
+    final StorageType storageType;
 
     VolumeInfo(FsVolumeImpl v, long usedSpace, long freeSpace) {
       this.directory = v.toString();
@@ -2614,6 +2615,7 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
       this.reservedSpace = v.getReserved();
       this.reservedSpaceForReplicas = v.getReservedForReplicas();
       this.numBlocks = v.getNumBlocks();
+      this.storageType = v.getStorageType();
     }
   }  
 
@@ -2649,6 +2651,7 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
       innerInfo.put("reservedSpace", v.reservedSpace);
       innerInfo.put("reservedSpaceForReplicas", v.reservedSpaceForReplicas);
       innerInfo.put("numBlocks", v.numBlocks);
+      innerInfo.put("storageType", v.storageType);
       info.put(v.directory, innerInfo);
     }
     return info;

hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/datanode/datanode.html

@@ -100,6 +100,7 @@
   <thead>
     <tr>
       <th>Directory</th>
+      <th>StorageType</th>
       <th>Capacity Used</th>
       <th>Capacity Left</th>
       <th>Capacity Reserved</th>
@@ -110,6 +111,7 @@
   {#dn.VolumeInfo}
     <tr>
       <td>{name}</td>
+      <td>{storageType}</td>
       <td>{usedSpace|fmt_bytes}</td>
       <td>{freeSpace|fmt_bytes}</td>
       <td>{reservedSpace|fmt_bytes}</td>