HDFS-8292. Move conditional in fmt_time from dfs-dust.js to status.html. Contributed by Charles Lamb.

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -488,6 +488,9 @@ Release 2.8.0 - UNRELEASED
 
     HDFS-8200. Refactor FSDirStatAndListingOp. (wheat9)
 
+    HDFS-8292. Move conditional in fmt_time from dfs-dust.js to status.html.
+    (Charles Lamb via wang)
+
   OPTIMIZATIONS
 
     HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than

hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/secondary/status.html

@@ -65,7 +65,7 @@
   <tr><th>Compiled</th><td>{CompileInfo}</td></tr>
   <tr><th>NameNode Address</th><td>{HostAndPort}</td></tr>
   <tr><th>Started</th><td>{StartTime|date_tostring}</td></tr>
-  <tr><th>Last Checkpoint</th><td>{@if cond="{LastCheckpointTime} === 0"}Never{:else}{LastCheckpointTime|date_tostring} ({LastCheckpointDeltaMs|fmt_time} ago){/if}</td></tr>
+  <tr><th>Last Checkpoint</th><td>{@if cond="{LastCheckpointTime} === 0"}Never{:else}{LastCheckpointTime|date_tostring}{/if} {@if cond="{LastCheckpointDeltaMs} >= 0"} ({LastCheckpointDeltaMs|fmt_time} ago){/if}</td></tr>
   <tr><th>Checkpoint Period</th><td>{CheckpointPeriod} seconds</td></tr>
   <tr><th>Checkpoint Transactions</th><td>{TxnCount}</td></tr>
 </table>

hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/dfs-dust.js

@@ -40,9 +40,6 @@
     },
 
     'fmt_time': function (v) {
-      if (v < 0) {
-        return "unknown";
-      }
       var s = Math.floor(v / 1000), h = Math.floor(s / 3600);
       s -= h * 3600;
       var m = Math.floor(s / 60);