Hadoop Collection Job Execution status information

Hadoop Collection Job execution status information a project needs to collect information about the execution status of the Hadoop job, and I have given the following resolution strategies:
1, from the jobtracker.jsp provided by Hadoop to obtain the required information, here is a problem is that the use of the application scope
Jobtracker tracker = (jobtracker) application.getattribute ("Job.tracker");
And the jetty server is embedded inside Hadoop,
Org.apache.mapred.Jobtracker.java
Inetsocketaddress infosocaddr = netutils.createsocketaddr (
Conf.get (jt_http_address, "0.0.0.0:50030"));
Infoserver = new Httpserver ("Job", Infobindaddress, Tmpinfoport,
Tmpinfoport = = 0, conf);
Infoserver.setattribute ("Job.tracker", this);
So, if you want to get statistics through JSP pages, you must bypass the jetty server, or in the modified Jobtracker return infoserver a reference, in the code implementation, but obviously this need to modify the core of Hadoop code, flexibility is not high.
2, script parsing jsp.
Through wget http://localhost:50030/jobtracker.jsp you can see:

-----------------------------------------------------------------------------------------------
<b>State:</b> running<br>
<b>Started:</b> Tue Dec 09:43:40 CST 2010<br>
<b>Version:</b> 0.21.0,
985326<br>
<b>Compiled:</b> Tue Aug 01:02:28 EDT by
Tomwhite from
Branches/branch-0.21<br>
<b>Identifier:</b> 201012280943<br>
...............................................................................................
This information can be resolved by using Python beautiful soup (http://www.crummy.com/software/BeautifulSoup/) entirely.

3, upgrade your Hadooop version to the Hadoop-0.21.0,cluster class



Provides a rich API interface
For example, when we need to print the information for a job, we only need to:
Configuration conf = new Configuration ();
Cluster Cluster = new Cluster (conf);
job[] Job = Cluster.getalljobs ();
if (Job!= null) {
for (Job tmp:job) {
System.out.println (Tmp.getjobid ());
System.out.println (Tmp.getjobname ());
System.out.println (Tmp.getstarttime ());
System.out.println (Tmp.getfinishtime ());
}
}