HDFS-10703. HA NameNode Web UI should show last checkpoint time. (John Zhuge via Yongjun Zhang)

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

@@ -182,6 +182,9 @@
   <tr><th>Block Deletion Start Time</th><td>{BlockDeletionStartTime|date_tostring}</td></tr>
 {/fs}
 
+{#fsn}
+  <tr><th>Last Checkpoint Time</th><td>{@if cond="{LastCheckpointTime} === 0"}Never{:else}{LastCheckpointTime|date_tostring}{/if}</td></tr>
+{/fsn}
 </table>
 
 <div class="page-header"><h1>NameNode Journal Status</h1></div>

hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/hdfs/dfshealth.js

@@ -36,6 +36,7 @@
       {"name": "nn",      "url": "/jmx?qry=Hadoop:service=NameNode,name=NameNodeInfo"},
       {"name": "nnstat",  "url": "/jmx?qry=Hadoop:service=NameNode,name=NameNodeStatus"},
       {"name": "fs",      "url": "/jmx?qry=Hadoop:service=NameNode,name=FSNamesystemState"},
+      {"name": "fsn",     "url": "/jmx?qry=Hadoop:service=NameNode,name=FSNamesystem"},
       {"name": "blockstats",      "url": "/jmx?qry=Hadoop:service=NameNode,name=BlockStats"},
       {"name": "mem",     "url": "/jmx?qry=java.lang:type=Memory"}
     ];