could you check the logs. you will see a bigger stack trace might lead back to mahout classes
On Mon, Jan 18, 2010 at 9:19 PM, Olivier Grisel <olivier.gri...@ensta.org>wrote: > 2010/1/18 Olivier Grisel <olivier.gri...@ensta.org>: > > 2010/1/18 Robin Anil <robin.a...@gmail.com>: > >> could you be specific on which map/reduce job you encountered the error > ? > > > > I thought it was on: > > > > hadoop jar examples/target/mahout-examples-0.3-SNAPSHOT.job > > org.apache.mahout.classifier.bayes.WikipediaDatasetCreatorDriver -i > > "wikipediadump/chunk-0001.xml" -o wikipediainput-eof-exception -c > > examples/src/test/resources/country.txt > > > > I just ran it again... successfully... The next time I encounter that > > error I will note the complete complete stacktrace however > > uninformative it looks. > > I ran the same jobs again on all the chunks and could reproduce the error: > > $ hadoop jar examples/target/mahout-examples-0.3-SNAPSHOT.job > org.apache.mahout.classifier.bayes.WikipediaDatasetCreatorDriver -i > "wikipediadump" -o wikipediainput-eof-exception -c > examples/src/test/resources/country.txt > [...] > 10/01/18 16:20:46 INFO mapred.JobClient: map 100% reduce 83% > 10/01/18 16:21:42 INFO mapred.JobClient: Task Id : > attempt_201001172109_0010_r_000000_2, Status : FAILED > java.io.EOFException > at java.io.DataInputStream.readByte(DataInputStream.java:250) > at > org.apache.hadoop.io.WritableUtils.readVLong(WritableUtils.java:298) > at > org.apache.hadoop.io.WritableUtils.readVInt(WritableUtils.java:319) > at org.apache.hadoop.io.Text.readString(Text.java:400) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.createBlockOutputStream(DFSClient.java:2869) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2794) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2077) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2263) > > I have no idea where it could possibly stem from. > > -- > Olivier > http://twitter.com/ogrisel - http://code.oliviergrisel.name >
