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From "Runping Qi (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-569) Hadoop should allow the user to dynamically change the number of times to re-try failed tasks before declaring the job fail
Date Mon, 02 Oct 2006 16:36:19 GMT
Hadoop should allow the user to dynamically change the number of times to re-try failed tasks
before declaring the job fail
---------------------------------------------------------------------------------------------------------------------------

                 Key: HADOOP-569
                 URL: http://issues.apache.org/jira/browse/HADOOP-569
             Project: Hadoop
          Issue Type: Improvement
          Components: mapred
            Reporter: Runping Qi



Hadoop has a built-in mechanism to fail a job if some tasks failed more than 3 times. This
mechanism works fine in most scenarios. However, in some other cases, it is highly desirable
for the user to change (increase) that number. My current running job demonstrates such a
scenario: The job has run more than 2.5 days. It is close to complete (90+%). Everything indicates
that it will finish eventually in a day, except for one potential danger: some of the tasks
are in their 3rd try! 
It will be extremely helpful if I can change the maximun number of tries to 6 instead of 4!


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