I would recommend to run your program through debug mode. How did you create the matrices? Can you read that matrices?
On Sun, Nov 8, 2009 at 3:59 PM, <[email protected]> wrote: > Hi, > The previous problem got solved but now I have a new problem. The O/P just > hangs at the statement map 0% reduce 0%. And then after > an eternity there is a null pointer exception. I do not understand what is the > problem. I checked the logs of hadoop and hbase. There is no log file created > in > hbase and the log file in hadoop is just an xml file. I do not understand what > the problem is. Why are all these problems not coming when I run your example? > > 03/05/01 07:57:43 WARN mapred.JobClient: Use GenericOptionsParser for parsing > the > arguments. Applications should implement Tool for the same. > 03/05/01 07:57:43 INFO mapred.HTableInputFormatBase: split: 0->zeus:, > 03/05/01 07:57:44 INFO mapred.JobClient: Running job: job_200305010723_0008 > 03/05/01 07:57:45 INFO mapred.JobClient: map 0% reduce 0% > 03/05/01 08:06:59 INFO mapred.JobClient: Task Id : > attempt_200305010723_0009_m_000000_0, Status : FAILED > java.lang.NullPointerException > at > org.apache.hama.mapred.HTableRecordReaderBase.restart(HTableRecordReaderBase.java:62) > at > org.apache.hama.mapred.HTableRecordReaderBase.init(HTableRecordReaderBase.java:73) > at > org.apache.hama.mapred.VectorInputFormat$TableRecordReader.init(VectorInputFormat.java:59) > at > org.apache.hama.mapred.VectorInputFormat.getRecordReader(VectorInputFormat.java:155) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:331) > at org.apache.hadoop.mapred.Child.main(Child.java:158) > > > Thank You > > Abhishek Agrawal > > SUNY- Buffalo > (716-435-7122) > > On Sat 11/07/09 6:03 AM , "Edward J. Yoon" [email protected] sent: >> Hi, >> >> One very simple way is the copy jars (hbase, hama) to >> {$HADOOP_HOME}/lib folder of all machines and re-boot hadoop cluster. >> -- Best Regards, Edward J. Yoon @ NHN, corp. [email protected] http://blog.udanax.org
