[120] | 1 | <%@ page |
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| 2 | contentType="text/html; charset=UTF-8" |
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| 3 | import="javax.servlet.*" |
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| 4 | import="javax.servlet.http.*" |
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| 5 | import="java.io.*" |
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| 6 | import="java.util.*" |
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| 7 | import="java.text.DecimalFormat" |
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| 8 | import="org.apache.hadoop.mapred.*" |
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| 9 | import="org.apache.hadoop.util.*" |
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| 10 | %> |
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| 11 | <% |
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| 12 | JobTracker tracker = (JobTracker) application.getAttribute("job.tracker"); |
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| 13 | String trackerName = |
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| 14 | StringUtils.simpleHostname(tracker.getJobTrackerMachine()); |
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| 15 | String type = request.getParameter("type"); |
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| 16 | %> |
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| 17 | <%! |
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| 18 | public void generateTaskTrackerTable(JspWriter out, |
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| 19 | String type, |
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| 20 | JobTracker tracker) throws IOException { |
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| 21 | Collection c; |
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| 22 | if (("blacklisted").equals(type)) { |
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| 23 | c = tracker.blacklistedTaskTrackers(); |
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| 24 | } else if (("active").equals(type)) { |
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| 25 | c = tracker.activeTaskTrackers(); |
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| 26 | } else { |
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| 27 | c = tracker.taskTrackers(); |
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| 28 | } |
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| 29 | if (c.size() == 0) { |
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| 30 | out.print("There are currently no known " + type + " Task Trackers."); |
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| 31 | } else { |
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| 32 | out.print("<center>\n"); |
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| 33 | out.print("<table border=\"2\" cellpadding=\"5\" cellspacing=\"2\">\n"); |
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| 34 | out.print("<tr><td align=\"center\" colspan=\"6\"><b>Task Trackers</b></td></tr>\n"); |
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| 35 | out.print("<tr><td><b>Name</b></td><td><b>Host</b></td>" + |
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| 36 | "<td><b># running tasks</b></td>" + |
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| 37 | "<td><b>Max Map Tasks</b></td>" + |
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| 38 | "<td><b>Max Reduce Tasks</b></td>" + |
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| 39 | "<td><b>Failures</b></td>" + |
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| 40 | "<td><b>Seconds since heartbeat</b></td></tr>\n"); |
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| 41 | int maxFailures = 0; |
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| 42 | String failureKing = null; |
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| 43 | for (Iterator it = c.iterator(); it.hasNext(); ) { |
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| 44 | TaskTrackerStatus tt = (TaskTrackerStatus) it.next(); |
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| 45 | long sinceHeartbeat = System.currentTimeMillis() - tt.getLastSeen(); |
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| 46 | if (sinceHeartbeat > 0) { |
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| 47 | sinceHeartbeat = sinceHeartbeat / 1000; |
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| 48 | } |
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| 49 | int numCurTasks = 0; |
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| 50 | for (Iterator it2 = tt.getTaskReports().iterator(); it2.hasNext(); ) { |
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| 51 | it2.next(); |
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| 52 | numCurTasks++; |
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| 53 | } |
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| 54 | int numFailures = tt.getFailures(); |
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| 55 | if (numFailures > maxFailures) { |
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| 56 | maxFailures = numFailures; |
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| 57 | failureKing = tt.getTrackerName(); |
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| 58 | } |
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| 59 | out.print("<tr><td><a href=\"http://"); |
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| 60 | out.print(tt.getHost() + ":" + tt.getHttpPort() + "/\">"); |
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| 61 | out.print(tt.getTrackerName() + "</a></td><td>"); |
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| 62 | out.print(tt.getHost() + "</td><td>" + numCurTasks + |
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| 63 | "</td><td>" + tt.getMaxMapTasks() + |
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| 64 | "</td><td>" + tt.getMaxReduceTasks() + |
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| 65 | "</td><td>" + numFailures + |
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| 66 | "</td><td>" + sinceHeartbeat + "</td></tr>\n"); |
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| 67 | } |
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| 68 | out.print("</table>\n"); |
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| 69 | out.print("</center>\n"); |
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| 70 | if (maxFailures > 0) { |
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| 71 | out.print("Highest Failures: " + failureKing + " with " + maxFailures + |
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| 72 | " failures<br>\n"); |
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| 73 | } |
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| 74 | } |
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| 75 | } |
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| 76 | |
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| 77 | %> |
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| 78 | |
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| 79 | <html> |
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| 80 | |
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| 81 | <title><%=trackerName%> Hadoop Machine List</title> |
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| 82 | |
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| 83 | <body> |
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| 84 | <h1><a href="jobtracker.jsp"><%=trackerName%></a> Hadoop Machine List</h1> |
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| 85 | |
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| 86 | <h2>Task Trackers</h2> |
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| 87 | <% |
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| 88 | generateTaskTrackerTable(out, type, tracker); |
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| 89 | %> |
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| 90 | |
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| 91 | <% |
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| 92 | out.println(ServletUtil.htmlFooter()); |
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| 93 | %> |
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