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From Francesco De Luca <f.deluc...@gmail.com>
Subject Re: Observation of MapReduce Task execution
Date Mon, 18 Apr 2011 14:13:36 GMT
Sorry :-) ... i make a mistake in my question.
The question is how can i use TaskTracker

2011/4/17 Francesco De Luca <f.deluca86@gmail.com>

> Apologize... i should use TaskTracker to be notified ??
>
>
> 2011/4/17 Harsh J <harsh@cloudera.com>
>
>> Its available in the API as well:
>>
>> http://hadoop.apache.org/common/docs/r0.20.2/api/org/apache/hadoop/mapred/TaskCompletionEvent.html#getTaskTrackerHttp()
>>
>> On Sun, Apr 17, 2011 at 7:20 PM, Francesco De Luca <f.deluca86@gmail.com>
>> wrote:
>> > Thank you Harsh.
>> > And there is a way to know on which node a task is submitted?
>> >
>> > 2011/4/17 Harsh J <harsh@cloudera.com>
>> >>
>> >> Hello,
>> >>
>> >> On Sun, Apr 17, 2011 at 3:48 PM, Francesco De Luca <
>> f.deluca86@gmail.com>
>> >> wrote:
>> >> >
>> >> > Exists any notification mechanism to be notified of all task state
>> >> > changes
>> >> > (task failure,task completion ecc)?
>> >> >
>> >> > In particular i need to follow all the map and reduce task execution.
>> >>
>> >> You can loop over and request the TaskCompletionEvents from your
>> >> RunningJob instance:
>> >>
>> >>
>> http://hadoop.apache.org/common/docs/r0.20.2/api/org/apache/hadoop/mapred/RunningJob.html#getTaskCompletionEvents(int)
>> >>
>> >> --
>> >> Harsh J
>> >
>> >
>>
>>
>>
>> --
>> Harsh J
>>
>
>

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