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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