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Posted to common-user@hadoop.apache.org by Jason Venner <ja...@attributor.com> on 2008/03/12 15:40:15 UTC

0.16.0 reduce NullPointEreceptions - is this a known issue, is there a fix?

We see this in some of our reduce jobs, on one particular cluster. This 
is the only message in the log file for the failed reduce.

Exception in thread "main" java.lang.NullPointerException
	at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2059)

  /** 
   * The main() for child processes. 
   */
2039  public static class Child {
    
2041    public static void main(String[] args) throws Throwable {

2058      Task task = umbilical.getTask(taskid);
2059      JobConf job = new JobConf(task.getJobFile());
2060      TaskLog.cleanup(job.getInt("mapred.userlog.retain.hours", 24));
2061      task.setConf(job);



-- 
Jason Venner
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