HBASE-4934 Display Master server and Regionserver start time on respective info servers

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1220304 13f79535-47bb-0310-9956-ffa450edef68

src/main/jamon/org/apache/hbase/tmpl/master/MasterStatusTmpl.jamon

@@ -111,6 +111,8 @@ org.apache.hadoop.hbase.HBaseConfiguration;
   </td>
   <td>Coprocessors currently loaded loaded by the master</td>
 </tr>
+<tr><td>HMaster Start Time</td><td><% new Date(master.getMasterStartTime()) %></td><td>Date stamp of when this HMaster was started</td></tr>
+<tr><td>HMaster Active Time</td><td><% new Date(master.getMasterActiveTime()) %></td><td>Date stamp of when this HMaster became active</td></tr>
 </table>
 
 <& ../common/TaskMonitorTmpl; filter = filter &>
@@ -202,7 +204,7 @@ org.apache.hadoop.hbase.HBaseConfiguration;
 </%java>
 
 <table>
-<tr><th rowspan="<% servers.size() + 1%>"></th><th>ServerName</th><th>Load</th></tr>
+<tr><th rowspan="<% servers.size() + 1%>"></th><th>ServerName</th><th>Start time</th><th>Load</th></tr>
 <%java>
    ServerName [] serverNames = servers.toArray(new ServerName[servers.size()]);
      Arrays.sort(serverNames);
@@ -217,12 +219,13 @@ org.apache.hadoop.hbase.HBaseConfiguration;
          totalRegions += hsl.getNumberOfRegions();
          totalRequests += hsl.getNumberOfRequests();
        }
+       long startcode = serverName.getStartcode();
 </%java>
-<tr><td><a href="<% url %>"><% serverName %></a></td></td><td><% loadStr %></td></tr>
+<tr><td><a href="<% url %>"><% serverName %></a></td><td><% new Date(startcode) %></td><td><% loadStr %></td></tr>
 <%java>
     }
 </%java>
-<tr><th>Total: </th><td>servers: <% servers.size() %></td><td>requestsPerSecond=<% totalRequests %>, numberOfOnlineRegions=<% totalRegions %></td></tr>
+<tr><th>Total: </th><td>servers: <% servers.size() %></td><td></td><td>requestsPerSecond=<% totalRequests %>, numberOfOnlineRegions=<% totalRegions %></td></tr>
 </table>
 
 <p>Load is requests per second and count of regions loaded</p>

src/main/jamon/org/apache/hbase/tmpl/regionserver/RSStatusTmpl.jamon

@@ -96,6 +96,7 @@ org.apache.hadoop.hbase.HBaseConfiguration;
     <% java.util.Arrays.toString(regionServer.getCoprocessors()) %>
   </td>
   <td>Coprocessors currently loaded by this regionserver</td>
+<tr><td>RS Start Time</td><td><% new Date(regionServer.getStartcode()) %></td><td>Date stamp of when this region server was started</td></tr>
 </tr>
 </table>
 

src/main/java/org/apache/hadoop/hbase/master/HMaster.java

@@ -199,7 +199,10 @@ implements HMasterInterface, HMasterRegionInterface, MasterServices, Server {
 
   private volatile boolean loadBalancerRunning = false;
 
-  
+  // Time stamps for when a hmaster was started and when it became active
+  private long masterStartTime;
+  private long masterActiveTime;
+
   /**
    * Initializes the HMaster. The steps are as follows:
    * <p>
@@ -301,6 +304,7 @@ implements HMasterInterface, HMasterRegionInterface, MasterServices, Server {
         "(Also watching cluster state node)");
       Thread.sleep(c.getInt("zookeeper.session.timeout", 180 * 1000));
     }
+    
   }
 
   /**
@@ -317,6 +321,7 @@ implements HMasterInterface, HMasterRegionInterface, MasterServices, Server {
     MonitoredTask startupStatus =
       TaskMonitor.get().createStatus("Master startup");
     startupStatus.setDescription("Master startup");
+    masterStartTime = System.currentTimeMillis();
     try {
       /*
        * Block on becoming the active master.
@@ -458,6 +463,7 @@ implements HMasterInterface, HMasterRegionInterface, MasterServices, Server {
      */
 
     status.setStatus("Initializing Master file system");
+    this.masterActiveTime = System.currentTimeMillis();
     // TODO: Do this using Dependency Injection, using PicoContainer, Guice or Spring.
     this.fileSystemManager = new MasterFileSystem(this, this, metrics);
 
@@ -1353,6 +1359,20 @@ implements HMasterInterface, HMasterRegionInterface, MasterServices, Server {
     return CoprocessorHost.getLoadedCoprocessors().toString();
   }
 
+  /**
+   * @return timestamp in millis when HMaster was started.
+   */
+  public long getMasterStartTime() {
+    return masterStartTime;
+  }
+
+  /**
+   * @return timestamp in millis when HMaster became the active master.
+   */
+  public long getMasterActiveTime() {
+    return masterActiveTime;
+  }
+  
   /**
    * @return array of coprocessor SimpleNames.
    */

src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java

@@ -2970,6 +2970,13 @@ public class HRegionServer implements HRegionInterface, HBaseRPCErrorHandler,
     return this.requestCount;
   }
 
+  /**
+   * @return time stamp in millis of when this region server was started
+   */
+  public long getStartcode() {
+    return this.startcode;
+  }
+
   /** @return reference to FlushRequester */
   public FlushRequester getFlushRequester() {
     return this.cacheFlusher;