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 >
