Are you working locally?What exactly is the issue?
Regards,
Mohammad Tariq
On Wed, Dec 12, 2012 at 6:00 PM, imen Megdiche <imen.megdi...@gmail.com>wrote:
> no
>
>
> 2012/12/12 Mohammad Tariq <donta...@gmail.com>
>
>> Any luck with "localhost:50030"??
>>
>> Regards,
>> Mohammad Tariq
>>
>>
>>
>> On Wed, Dec 12, 2012 at 5:53 PM, imen Megdiche
>> <imen.megdi...@gmail.com>wrote:
>>
>>> i run the job through the command line
>>>
>>>
>>> 2012/12/12 Mohammad Tariq <donta...@gmail.com>
>>>
>>>> You have to replace "JobTrackerHost" in "JobTrackerHost:50030" with
>>>> the actual name of the machine where JobTracker is running. For
>>>> example, If you are working on a local cluster, you have to use
>>>> "localhost:50030".
>>>>
>>>> Are you running your job through the command line or some IDE?
>>>>
>>>> Regards,
>>>> Mohammad Tariq
>>>>
>>>>
>>>>
>>>> On Wed, Dec 12, 2012 at 5:42 PM, imen Megdiche <imen.megdi...@gmail.com
>>>> > wrote:
>>>>
>>>>> excuse me the data size is 98 MB
>>>>>
>>>>>
>>>>> 2012/12/12 imen Megdiche <imen.megdi...@gmail.com>
>>>>>
>>>>>> the size of data 49 MB and n of map 4
>>>>>> the web UI JobTrackerHost:50030 does not wok, what should i do to
>>>>>> make this appear , i work on ubuntu
>>>>>>
>>>>>>
>>>>>> 2012/12/12 Mohammad Tariq <donta...@gmail.com>
>>>>>>
>>>>>>> Hi Imen,
>>>>>>>
>>>>>>> You can visit the MR web UI at "JobTrackerHost:50030" and see
>>>>>>> all the useful information like no. of mappers, no of reducers, time
>>>>>>> taken
>>>>>>> for the execution etc.
>>>>>>>
>>>>>>> One quick question for you, what is the size of your data and what
>>>>>>> is the no of maps which you are getting right now?
>>>>>>>
>>>>>>> Regards,
>>>>>>> Mohammad Tariq
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Wed, Dec 12, 2012 at 5:11 PM, imen Megdiche <
>>>>>>> imen.megdi...@gmail.com> wrote:
>>>>>>>
>>>>>>>> Thank you Mohammad but the number of map tasks still the same in
>>>>>>>> the execution. Do you know how to capture the time spent on execution.
>>>>>>>>
>>>>>>>>
>>>>>>>> 2012/12/12 Mohammad Tariq <donta...@gmail.com>
>>>>>>>>
>>>>>>>>> Hi Imen,
>>>>>>>>>
>>>>>>>>> You can add "mapred.map.tasks" property in your
>>>>>>>>> mapred-site.xml file.
>>>>>>>>>
>>>>>>>>> But, it is just a hint for the InputFormat. Actually no. of maps
>>>>>>>>> is actually determined by the no of InputSplits created by the
>>>>>>>>> InputFormat.
>>>>>>>>>
>>>>>>>>> HTH
>>>>>>>>>
>>>>>>>>> Regards,
>>>>>>>>> Mohammad Tariq
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Wed, Dec 12, 2012 at 4:11 PM, imen Megdiche <
>>>>>>>>> imen.megdi...@gmail.com> wrote:
>>>>>>>>>
>>>>>>>>>> Hi,
>>>>>>>>>>
>>>>>>>>>> I try to force the number of map for the mapreduce job with the
>>>>>>>>>> command :
>>>>>>>>>> public static void main(String[] args) throws Exception {
>>>>>>>>>>
>>>>>>>>>> JobConf conf = new JobConf(WordCount.class);
>>>>>>>>>> conf.set("mapred.job.tracker", "local");
>>>>>>>>>> conf.set("fs.default.name", "local");
>>>>>>>>>> conf.setJobName("wordcount");
>>>>>>>>>>
>>>>>>>>>> conf.setOutputKeyClass(Text.class);
>>>>>>>>>> conf.setOutputValueClass(IntWritable.class);
>>>>>>>>>>
>>>>>>>>>> conf.setNumMapTask(6);
>>>>>>>>>> conf.setMapperClass(Map.class);
>>>>>>>>>> conf.setCombinerClass(Reduce.class);
>>>>>>>>>> conf.setReducerClass(Reduce.class);
>>>>>>>>>> ...
>>>>>>>>>> }
>>>>>>>>>>
>>>>>>>>>> But it doesn t work.
>>>>>>>>>> What can i do to modify the number of map and reduce tasks.
>>>>>>>>>>
>>>>>>>>>> Thank you
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
