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https://issues.apache.org/jira/browse/HDFS-7483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14611162#comment-14611162
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Haohui Mai commented on HDFS-7483:
----------------------------------

{code}
+  public float getPercentUsed() {
+    return DFSUtilClient.getPercentUsed(capacityUsed, capacityTotal);
+  }
+
 
+  public float getPercentRemaining() {
+    return DFSUtilClient.getPercentRemaining(capacityRemaining,
+        capacityTotal);
+  }
{code}

The client should calculate the percentage which allows more options on 
formatting.

{code}
hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/hdfs/header.html
{code}

The duplication is actually by design for now to avoid partially loading pages. 
A better approach is to make it a dust template and to precompile it when 
building the artifacts, which requires some work on the build infrastructure.

{code}
+  function load_storage_stats() {
+    $.get(
+      '/jmx?qry=Hadoop:service=NameNode,name=BlockStats',
{code}

It should be loaded in the {{load_overview()}} function.

> Display information per tier on the Namenode UI
> -----------------------------------------------
>
>                 Key: HDFS-7483
>                 URL: https://issues.apache.org/jira/browse/HDFS-7483
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Benoy Antony
>            Assignee: Benoy Antony
>         Attachments: HDFS-7483-001.patch
>
>
> If cluster has different types of storage, it is useful to display the 
> storage information per type. 
> The information will be available via JMX (HDFS-7390)



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