hadoop 404 Not Found / jobtracker.jsp

After the system restarts, Hadoop the Administrator that the interface can not access the display:

HTTP ERROR: 404

/ jobtracker.jsp
RequestURI = / jobtracker.jsp

Powered by Jetty :/ /
wrong, do not know if you have not encountered before, how to solve?

accessible form: master-IP: 50030
and master-IP: 50070

Given:
ports are open, and not occupied by other programs;
jps View all services running, and the cluster is running, no problem, just can not see;
. / hadoop dfsadmin-report view cluster nodes have no problem;

using hadoop version is hadoop-0.20.2 +737, online view of the likely reason is classpath set up a problem, it is necessary to add the compiled jsp files to the classpath, but do not know how this whole

passing heroes help out
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I have encountered this problem,
buid local inventory, you should delete the build directory, otherwise the startup script directory will be redirected to the build directory, resulting in open web administration page
startup script, if there is build directory, it will be the path to build the next.

if [-d "$ HADOOP_HOME / build / webapps"]; then
CLASSPATH = $ {CLASSPATH}: $ HADOOP_HOME / build
fi

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just solve this problem, and LYG105504 said the same, the problem lies in the build directory under the webapps directory exists. I just rename the build: move build build.bak. And then restart the start-all.sh. (Note that all datanode should all be renamed, otherwise there will still be the problem), then no problem.
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should be a configuration problem hadoop's actually quite simple, is to modify the configuration, there are many online tutorials, the main changes is the config / xxxx.xml and / etc / hosts file, goodluck
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two clusters, one cluster are normal, the other a cluster function is normal, but it is not read UI interface, configuration is checked, including the system log, did not find anything special about it.
checked all the information, we only compiled jsp files that the solution to the classpath, but do not know how to do this, ah, this classpath environment variable really kill people, ah, please also had this situation heroes gets advice ~
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I use the 0.20.2 version did not come across the problem you say, the installation process does not need to compile
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ah, the installation process does not require compile the , and only need to change the configuration file is good enough.
just saw someone answers hadoop communities can do to solve this problem, but this seems a more reliable child is the answer, because I use the command line to view the information hdfs are normal, so problem is out in the Jetty display these pages when pinched how to solve this problem?
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I also encountered the same problem, they seem to go that path is wrong. exactly where to jump it?
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jump, then jump inside that is index.html, should not be a problem here
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I encountered is the case. cluster starts normally, jps appear normal, dfsadmin-report properly. hdfs file operations (read and write) is also normal. The only web management page is not open. hadoop is really inconvenient to use embeded jetty Yeah!
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I have encountered this problem.
first found my hadoop root directory of the jsp files are missing from the same version of hadoop jar package unzip merge coverage, but still did not solve the problem.
engage in a fast two days, did not get.

PS. my cluster nodes down there, but even in the conf / slaves inside that point by deleting the same issue.
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this with node goes down is nothing, and now I did not get to know what it is, but the response from the above point of view, this problem although very rare, but there have been very difficult to resolve, indeed there are a few people met, really depressed ah.
If you solve a certain share with you, Thank you very much ~
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# 10 # 11 Positive Solutions
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do you solve this problem? I also encountered this problem, do not know how to solve. Jobtracker log in to see this
WARN org.apache.jasper.servlet.JspServlet: PWC6117: File "/ tmp/Jetty_0_0_0_0_50030_job____yn7qmk/webapp/jobtracker.jsp" not found
seeking guidance.
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I did not build directory it
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I did not build directory it
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I do not build directory  

If the JDK is not 1.7, please try to change 1.7
Note modify conf / hadoop-env.sh file