Pseudo-distributed mode is good for developing and testing hadoop code. But instead of experimenting with hadoop on your mac, I would go for hadoop on EC2. With starcluster http://web.mit.edu/star/cluster/ it takes just a single command to start hadoop. You also get a fixed environment.
-Håvard On Mon, Aug 13, 2012 at 6:21 AM, Subho Banerjee <subs.z...@gmail.com> wrote: > Hello, > > I am running hadoop v1.0.3 in Mac OS X 10.8 with Java_1.6.0_33-b03-424 > > > When running hadoop on pseudo-distributed mode, the map seems to work, but > it cannot compute the reduce. > > 12/08/13 08:58:12 INFO mapred.JobClient: Running job: job_201208130857_0001 > 12/08/13 08:58:13 INFO mapred.JobClient: map 0% reduce 0% > 12/08/13 08:58:27 INFO mapred.JobClient: map 20% reduce 0% > 12/08/13 08:58:33 INFO mapred.JobClient: map 30% reduce 0% > 12/08/13 08:58:36 INFO mapred.JobClient: map 40% reduce 0% > 12/08/13 08:58:39 INFO mapred.JobClient: map 50% reduce 0% > 12/08/13 08:58:42 INFO mapred.JobClient: map 60% reduce 0% > 12/08/13 08:58:45 INFO mapred.JobClient: map 70% reduce 0% > 12/08/13 08:58:48 INFO mapred.JobClient: map 80% reduce 0% > 12/08/13 08:58:51 INFO mapred.JobClient: map 90% reduce 0% > 12/08/13 08:58:54 INFO mapred.JobClient: map 100% reduce 0% > 12/08/13 08:59:14 INFO mapred.JobClient: Task Id : > attempt_201208130857_0001_m_000000_0, Status : FAILED > Too many fetch-failures > 12/08/13 08:59:14 WARN mapred.JobClient: Error reading task outputServer > returned HTTP response code: 403 for URL: > http://10.1.66.17:50060/tasklog?plaintext=true&attemptid=attempt_201208130857_0001_m_000000_0&filter=stdout > 12/08/13 08:59:14 WARN mapred.JobClient: Error reading task outputServer > returned HTTP response code: 403 for URL: > http://10.1.66.17:50060/tasklog?plaintext=true&attemptid=attempt_201208130857_0001_m_000000_0&filter=stderr > 12/08/13 08:59:18 INFO mapred.JobClient: map 89% reduce 0% > 12/08/13 08:59:21 INFO mapred.JobClient: map 100% reduce 0% > 12/08/13 09:00:14 INFO mapred.JobClient: Task Id : > attempt_201208130857_0001_m_000001_0, Status : FAILED > Too many fetch-failures > > Here is what I get when I try to see the tasklog using the links given in > the output > > http://10.1.66.17:50060/tasklog?plaintext=true&attemptid=attempt_201208130857_0001_m_000000_0&filter=stderr > ---> > 2012-08-13 08:58:39.189 java[74092:1203] Unable to load realm info from > SCDynamicStore > > http://10.1.66.17:50060/tasklog?plaintext=true&attemptid=attempt_201208130857_0001_m_000000_0&filter=stdout > ---> > > I have changed my hadoop-env.sh acoording to Mathew Buckett in > https://issues.apache.org/jira/browse/HADOOP-7489 > > Also this error of Unable to load realm info from SCDynamicStore does not > show up when I do 'hadoop namenode -format' or 'start-all.sh' > > I am also attaching a zipped copy of my logs > > > Cheers, > > Subho. -- Håvard Wahl Kongsgård Faculty of Medicine & Department of Mathematical Sciences NTNU http://havard.security-review.net/
