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 <[email protected]> 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 >
