Args in job details links on jobhistory.jsp are not URL encoded
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                 Key: MAPREDUCE-1378
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1378
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: jobtracker
            Reporter: E. Sammer
            Priority: Trivial


The logFile argument in the job links on the JT jobhistory.jsp page is not 
properly URL encoded leading to links that result in 500 errors. I found the 
issue while working with the Cloudera distro which contained a plus ('+') in 
the path which is interpreted as a space character (%20) by Firefox. Here is 
the (trimmed) URL. Note the hadoop-0.20.1+152 directory which should be 
hadoop-0.20.1%2B152. I have created a patch against current ASF svn trunk but 
it is untested (although the jsp compiles to a class file ok).

A job link from http://host:50030/jobhistory.jsp:
http://host:50030/jobdetailshistory.jsp?jobid=job_201001141235_0001&logFile=file:/Users/esammer/hadoop-0.20.1+152/logs/history/done/...

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