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MapReduce >> mail # user >> Re: I am running MapReduce on a 30G data on 1master/2 slave, but failed.


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Re: I am running MapReduce on a 30G data on 1master/2 slave, but failed.
Are you running this on the VM by any chance?
On Jan 10, 2013, at 9:11 PM, Mahesh Balija <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:

Hi,

          2 reducers are successfully completed and 1498 have been killed. I assume that you have the data issues. (Either the data is huge or some issues with the data you are trying to process)
          One possibility could be you have many values associated to a single key, which can cause these kind of issues based on the operation you do in your reducer.
          Can you put some logs in your reducer and try to trace out what is happening.

Best,
Mahesh Balija,
Calsoft Labs.

On Fri, Jan 11, 2013 at 8:53 AM, yaotian <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
I have 1 hadoop master which name node locates and 2 slave which datanode locate.

If i choose a small data like 200M, it can be done.

But if i run 30G data, Map is done. But the reduce report error. Any sugggestion?
This is the information.

Black-listed TaskTrackers: 1<http://23.20.27.135:9003/jobblacklistedtrackers.jsp?jobid=job_201301090834_0041>
________________________________
Kind    % Complete      Num Tasks       Pending Running Complete        Killed  Failed/Killed
Task Attempts<http://23.20.27.135:9003/jobfailures.jsp?jobid=job_201301090834_0041>
map<http://23.20.27.135:9003/jobtasks.jsp?jobid=job_201301090834_0041&type=map&pagenum=1>       100.00%

        450     0       0       450<http://23.20.27.135:9003/jobtasks.jsp?jobid=job_201301090834_0041&type=map&pagenum=1&state=completed>       0       0 / 1<http://23.20.27.135:9003/jobfailures.jsp?jobid=job_201301090834_0041&kind=map&cause=killed>
reduce<http://23.20.27.135:9003/jobtasks.jsp?jobid=job_201301090834_0041&type=reduce&pagenum=1> 100.00%

        1500    0       0       2<http://23.20.27.135:9003/jobtasks.jsp?jobid=job_201301090834_0041&type=reduce&pagenum=1&state=completed>      1498<http://23.20.27.135:9003/jobtasks.jsp?jobid=job_201301090834_0041&type=reduce&pagenum=1&state=killed>      12<http://23.20.27.135:9003/jobfailures.jsp?jobid=job_201301090834_0041&kind=reduce&cause=failed> / 3<http://23.20.27.135:9003/jobfailures.jsp?jobid=job_201301090834_0041&kind=reduce&cause=killed>

Task    Complete        Status  Start Time      Finish Time     Errors  Counters
task_201301090834_0041_r_000001<http://23.20.27.135:9003/taskdetails.jsp?tipid=task_201301090834_0041_r_000001> 0.00%
        10-Jan-2013 04:18:54
        10-Jan-2013 06:46:38 (2hrs, 27mins, 44sec)
Task attempt_201301090834_0041_r_000001_0 failed to report status for 600 seconds. Killing!
Task attempt_201301090834_0041_r_000001_1 failed to report status for 602 seconds. Killing!
Task attempt_201301090834_0041_r_000001_2 failed to report status for 602 seconds. Killing!
Task attempt_201301090834_0041_r_000001_3 failed to report status for 602 seconds. Killing!
        0<http://23.20.27.135:9003/taskstats.jsp?tipid=task_201301090834_0041_r_000001>
task_201301090834_0041_r_000002<http://23.20.27.135:9003/taskdetails.jsp?tipid=task_201301090834_0041_r_000002> 0.00%
        10-Jan-2013 04:18:54
        10-Jan-2013 06:46:38 (2hrs, 27mins, 43sec)
Task attempt_201301090834_0041_r_000002_0 failed to report status for 601 seconds. Killing!
Task attempt_201301090834_0041_r_000002_1 failed to report status for 600 seconds. Killing!
        0<http://23.20.27.135:9003/taskstats.jsp?tipid=task_201301090834_0041_r_000002>
task_201301090834_0041_r_000003<http://23.20.27.135:9003/taskdetails.jsp?tipid=task_201301090834_0041_r_000003> 0.00%
        10-Jan-2013 04:18:57
        10-Jan-2013 06:46:38 (2hrs, 27mins, 41sec)
Task attempt_201301090834_0041_r_000003_0 failed to report status for 602 seconds. Killing!
Task attempt_201301090834_0041_r_000003_1 failed to report status for 602 seconds. Killing!
Task attempt_201301090834_0041_r_000003_2 failed to report status for 602 seconds. Killing!
        0<http://23.20.27.135:9003/taskstats.jsp?tipid=task_201301090834_0041_r_000003>
task_201301090834_0041_r_000005<http://23.20.27.135:9003/taskdetails.jsp?tipid=task_201301090834_0041_r_000005> 0.00%
        10-Jan-2013 06:11:07
        10-Jan-2013 06:46:38 (35mins, 31sec)
Task attempt_201301090834_0041_r_000005_0 failed to report status for 600 seconds. Killing!
        0<http://23.20.27.135:9003/taskstats.jsp?tipid=task_201301090834_0041_r_000005>
+
yaotian 2013-01-14, 04:08