Thanks Ted, I actually tried to modify HBase, so i choose this developer release.
So, you are thinking this is a version problem, should disappear if i switched to 0.96? 2014/1/24 Ted Yu <yuzhih...@gmail.com> > Why do you use 0.95 which was a developer release ? > > See http://hbase.apache.org/book.html#d243e520 > > Cheers > > > On Fri, Jan 24, 2014 at 8:40 AM, daidong <daidon...@gmail.com> wrote: > > > Dear all, > > > > I have a simple HBase MapReduce application and try to run it on a > > 12-node cluster using this command: > > > > HADOOP_CLASSPATH=`bin/hbase classpath` ~/hadoop-1.1.2/bin/hadoop jar > > xxxx.jar org.test.WordCount > > > > HBase version is 0.95.0. But i got this error: > > > > java.lang.RuntimeException: > > org.apache.hadoop.hbase.client.NoServerForRegionException: Unable to find > > region for wordcount,,99999999999999 after 10 tries. > > > > after a long waiting from this output: 14/01/24 10:12:51 INFO > > mapred.JobClient: map 0% reduce 0% > > > > It seems like RegionServer problem, however, i have tried all the ways > > to make sure the HBase cluster is running well: i can access all > > region servers through web ui, i can see the table 'wordcount' there, > > i run 'hbase hbck' and it returns all 'ok'. I even try a simple HBase > > program without MapReduce, it works well too. > > > > So, Could anybody tell me why this happens? how to fix it? Is it > > relevant to my Hadoop configuration? Thanks! > > > > - Dong Dai > > >
