HDFS-13647. Fix the description of storageType option for space quota. Contributed by Takanobu Asanuma.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java

@@ -240,10 +240,10 @@ public class DFSAdmin extends FsShell {
         "\t\tThe storage type specific quota is cleared when -storageType " +
         "option is specified.\n" +
         "\t\tAvailable storageTypes are \n" +
-        "\t\t- RAM_DISK\n" +
         "\t\t- DISK\n" +
         "\t\t- SSD\n" +
-        "\t\t- ARCHIVE";
+        "\t\t- ARCHIVE\n" +
+        "\t\t- PROVIDED";
 
 
     private StorageType type;
@@ -304,10 +304,10 @@ public class DFSAdmin extends FsShell {
         "\t\t3. the directory does not exist or is a file.\n" +
         "\t\tThe storage type specific quota is set when -storageType option is specified.\n" +
         "\t\tAvailable storageTypes are \n" +
-        "\t\t- RAM_DISK\n" +
         "\t\t- DISK\n" +
         "\t\t- SSD\n" +
-        "\t\t- ARCHIVE";
+        "\t\t- ARCHIVE\n" +
+        "\t\t- PROVIDED";
 
     private long quota; // the quota to be set
     private StorageType type;

hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HdfsQuotaAdminGuide.md

@@ -96,7 +96,7 @@ Quotas are managed by a set of commands available only to the administrator.
     integer, the directory does not exist or it is a file, or the
     directory would immediately exceed the new quota. The storage type
     specific quota is set when -storageType option is specified. Available
-    storageTypes are RAM_DISK,DISK,SSD,ARCHIVE.
+    storageTypes are DISK,SSD,ARCHIVE,PROVIDED.
 
 *   `hdfs dfsadmin -clrSpaceQuota -storageType <storagetype> <directory>...<directory>`
 
@@ -104,7 +104,7 @@ Quotas are managed by a set of commands available only to the administrator.
     for each directory, with faults reported if the directory does not exist or
     it is a file. It is not a fault if the directory has no storage type quota on
     for storage type specified. The storage type specific quota is cleared when -storageType
-    option is specified. Available storageTypes are RAM_DISK,DISK,SSD,ARCHIVE.
+    option is specified. Available storageTypes are DISK,SSD,ARCHIVE,PROVIDED.
 
 Reporting Command
 -----------------

hadoop-hdfs-project/hadoop-hdfs/src/test/resources/testHDFSConf.xml

@@ -16106,10 +16106,6 @@
           <type>RegexpComparator</type>
           <expected-output>^( |\t)*Available storageTypes are( )*</expected-output>
         </comparator>
-        <comparator>
-          <type>RegexpComparator</type>
-          <expected-output>^( |\t)*- RAM_DISK( )*</expected-output>
-        </comparator>
         <comparator>
           <type>RegexpComparator</type>
           <expected-output>^( |\t)*- DISK( )*</expected-output>
@@ -16122,6 +16118,10 @@
           <type>RegexpComparator</type>
           <expected-output>^( |\t)*- ARCHIVE( )*</expected-output>
         </comparator>
+        <comparator>
+          <type>RegexpComparator</type>
+          <expected-output>^( |\t)*- PROVIDED( )*</expected-output>
+        </comparator>
       </comparators>
     </test>