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Posted to user@hbase.apache.org by Konrad Tendera <em...@tendera.eu> on 2012/05/30 11:51:41 UTC
Testing HBase Performance and Scalability
Hello,
Recently I'm trying to launch some performance tests using Apache tool: http://wiki.apache.org/hadoop/Hbase/PerformanceEvaluation, but I'm facing many problems. First I have to add that we're using HBase 0.92 with Hadoop 0.22. When I'm launching tool I get following error:
mapreduce.JobSubmitter: Cleaning up the staging area hdfs://nn.evizone.icsadl.agh.edu.pl/tmp/hadoop-root/mapred/staging/hdfs/.staging/job_201205231343_0004
Exception in thread "main" java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected
Maybe there is any posibility to change only required classes in jars? I tried to use hadoop-core-1.0.0 but then versions don't match and exceptions are thrown...
--
Konrad Tendera
Re: Testing HBase Performance and Scalability
Posted by Andrew Purtell <an...@gmail.com>.
You will need to recompile HBase against version 0.22 and use the resulting jars / tarball instead.
On May 30, 2012, at 2:51 AM, Konrad Tendera <em...@tendera.eu> wrote:
> Hello,
> Recently I'm trying to launch some performance tests using Apache tool: http://wiki.apache.org/hadoop/Hbase/PerformanceEvaluation, but I'm facing many problems. First I have to add that we're using HBase 0.92 with Hadoop 0.22. When I'm launching tool I get following error:
>
> mapreduce.JobSubmitter: Cleaning up the staging area hdfs://nn.evizone.icsadl.agh.edu.pl/tmp/hadoop-root/mapred/staging/hdfs/.staging/job_201205231343_0004
> Exception in thread "main" java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected
>
> Maybe there is any posibility to change only required classes in jars? I tried to use hadoop-core-1.0.0 but then versions don't match and exceptions are thrown...
>
> --
> Konrad Tendera