Hi Bhushan, Please email the user@hadoop.apache.org lists for any Apache Hadoop user-related questions (instead of sending it to me directly this way). You can subscribe by following instructions at http://hadoop.apache.org/mailing_lists.html. I've added the list in my reply here.
On Mon, Feb 25, 2013 at 1:09 PM, <bhushan.kandal...@harbingergroup.com> wrote: > I am using Hadoop-1.0.3 and HBase-0.94.3. I am able to run MapReduce job over > Hadoop-1.0.3. But I got following error while running MapReduce job over > HBase-0.94.3. > Exception in thread "main" java.lang.NullPointerException > at org.apache.hadoop.net.DNS.reverseDns(DNS.java:72) > at > org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.reverseDNS(TableInputFormatBase.java:218) > at > org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.getSplits(TableInputFormatBase.java:183) > at org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:962) > at org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:979) > at org.apache.hadoop.mapred.JobClient.access$600(JobClient.java:174) > at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:897) > at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:850) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:416) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121) > at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:850) > at org.apache.hadoop.mapreduce.Job.submit(Job.java:500) > at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:530) > at org.apache.hadoop.hbase.mapreduce.CopyTable.main(CopyTable.java:237) > > > Is their any versioning issue for HBase? > > How to resolve it? > > Thanks in advance. > -- Harsh J
