title: Nutch 2.1 - generator job runtime exception job failed
body: <p>I am getting the below error when i try to generate urls using the generate command:</p>
  
  <blockquote>
    <p>GeneratorJob: java.lang.RuntimeException: job failed: name=generate: 1357474131-234134646, jobid=job_local_0001
            at org.apache.nutch.util.NutchJob.waitForCompletion(NutchJob.java:54)
            at org.apache.nutch.crawl.GeneratorJob.run(GeneratorJob.java:191)
            at org.apache.nutch.crawl.GeneratorJob.generate(GeneratorJob.java:213)
            at org.apache.nutch.crawl.GeneratorJob.run(GeneratorJob.java:241)
            at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
            at org.apache.nutch.crawl.GeneratorJob.main(GeneratorJob.java:249)</p>
  </blockquote>
  
  <p>The <code>generate</code>, <code>fetch</code> and <code>parse</code> were working fine, but <code>updatedb</code> was giving this error before sometimes:</p>
  
  <blockquote>
    <p>Exception in thread "main" java.lang.RuntimeException: job failed: name=update-table, jobid=job_local_0001
        at org.apache.nutch.util.NutchJob.waitForCompletion(NutchJob.java:54)
        at org.apache.nutch.crawl.DbUpdaterJob.run(DbUpdaterJob.java:98)
        at org.apache.nutch.crawl.DbUpdaterJob.updateTable(DbUpdaterJob.java:105)
        at org.apache.nutch.crawl.DbUpdaterJob.run(DbUpdaterJob.java:119)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.nutch.crawl.DbUpdaterJob.main(DbUpdaterJob.java:123)</p>
  </blockquote>
  
  <p>Now, it is continuously giving generate job failed. What might be the issue? Can it be mysql issue?</p>