Can some one please look in to below issue ?? Thanks in Advance On Wed, Mar 7, 2012 at 9:09 AM, Sujit Dhamale <sujitdhamal...@gmail.com>wrote:
> Hadoop version : hadoop-0.20.203.0rc1.tar > Operaring Syatem : ubuntu 11.10 > > > > On Wed, Mar 7, 2012 at 12:19 AM, Harsh J <ha...@cloudera.com> wrote: > >> Hi Sujit, >> >> Please also tell us which version/distribution of Hadoop is this? >> >> On Tue, Mar 6, 2012 at 11:27 PM, Sujit Dhamale <sujitdhamal...@gmail.com> >> wrote: >> > Hi, >> > >> > I am new to Hadoop., i install Hadoop as per >> > >> http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-single-node-cluster/ >> < >> http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-single-node-cluste >> > >> > >> > >> > while running Word cont example i am getting *NullPointerException >> > >> > *can some one please look in to this issue ?* >> > >> > *Thanks in Advance* !!! >> > >> > * >> > >> > >> > duser@sujit:~/Desktop/hadoop$ bin/hadoop dfs -ls /user/hduser/data >> > Found 3 items >> > -rw-r--r-- 1 hduser supergroup 674566 2012-03-06 23:04 >> > /user/hduser/data/pg20417.txt >> > -rw-r--r-- 1 hduser supergroup 1573150 2012-03-06 23:04 >> > /user/hduser/data/pg4300.txt >> > -rw-r--r-- 1 hduser supergroup 1423801 2012-03-06 23:04 >> > /user/hduser/data/pg5000.txt >> > >> > hduser@sujit:~/Desktop/hadoop$ bin/hadoop jar hadoop*examples*.jar >> > wordcount /user/hduser/data /user/hduser/gutenberg-outputd >> > >> > 12/03/06 23:14:33 INFO input.FileInputFormat: Total input paths to >> process >> > : 3 >> > 12/03/06 23:14:33 INFO mapred.JobClient: Running job: >> job_201203062221_0002 >> > 12/03/06 23:14:34 INFO mapred.JobClient: map 0% reduce 0% >> > 12/03/06 23:14:49 INFO mapred.JobClient: map 66% reduce 0% >> > 12/03/06 23:14:55 INFO mapred.JobClient: map 100% reduce 0% >> > 12/03/06 23:14:58 INFO mapred.JobClient: Task Id : >> > attempt_201203062221_0002_r_000000_0, Status : FAILED >> > Error: java.lang.NullPointerException >> > at >> > java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768) >> > at >> > >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$GetMapEventsThread.getMapCompletionEvents(ReduceTask.java:2900) >> > at >> > >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$GetMapEventsThread.run(ReduceTask.java:2820) >> > >> > 12/03/06 23:15:07 INFO mapred.JobClient: Task Id : >> > attempt_201203062221_0002_r_000000_1, Status : FAILED >> > Error: java.lang.NullPointerException >> > at >> > java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768) >> > at >> > >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$GetMapEventsThread.getMapCompletionEvents(ReduceTask.java:2900) >> > at >> > >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$GetMapEventsThread.run(ReduceTask.java:2820) >> > >> > 12/03/06 23:15:16 INFO mapred.JobClient: Task Id : >> > attempt_201203062221_0002_r_000000_2, Status : FAILED >> > Error: java.lang.NullPointerException >> > at >> > java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768) >> > at >> > >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$GetMapEventsThread.getMapCompletionEvents(ReduceTask.java:2900) >> > at >> > >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$GetMapEventsThread.run(ReduceTask.java:2820) >> > >> > 12/03/06 23:15:31 INFO mapred.JobClient: Job complete: >> job_201203062221_0002 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Counters: 20 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Job Counters >> > 12/03/06 23:15:31 INFO mapred.JobClient: Launched reduce tasks=4 >> > 12/03/06 23:15:31 INFO mapred.JobClient: SLOTS_MILLIS_MAPS=22084 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Total time spent by all >> > reduces waiting after reserving slots (ms)=0 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Total time spent by all >> maps >> > waiting after reserving slots (ms)=0 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Launched map tasks=3 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Data-local map tasks=3 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Failed reduce tasks=1 >> > 12/03/06 23:15:31 INFO mapred.JobClient: SLOTS_MILLIS_REDUCES=16799 >> > 12/03/06 23:15:31 INFO mapred.JobClient: FileSystemCounters >> > 12/03/06 23:15:31 INFO mapred.JobClient: FILE_BYTES_READ=740520 >> > 12/03/06 23:15:31 INFO mapred.JobClient: HDFS_BYTES_READ=3671863 >> > 12/03/06 23:15:31 INFO mapred.JobClient: FILE_BYTES_WRITTEN=2278287 >> > 12/03/06 23:15:31 INFO mapred.JobClient: File Input Format Counters >> > 12/03/06 23:15:31 INFO mapred.JobClient: Bytes Read=3671517 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Map-Reduce Framework >> > 12/03/06 23:15:31 INFO mapred.JobClient: Map output materialized >> > bytes=1474341 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Combine output >> records=102322 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Map input records=77932 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Spilled Records=153640 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Map output bytes=6076095 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Combine input >> records=629172 >> > 12/03/06 23:15:31 INFO mapred.JobClient: Map output records=629172 >> > 12/03/06 23:15:31 INFO mapred.JobClient: SPLIT_RAW_BYTES=346 >> > hduser@sujit:~/Desktop/hadoop$ >> >> >> >> -- >> Harsh J >> > >
