Yes, My job is compiled in CHD3u3, and I run the job on CDH4.3.1, but I use the mr1 of CHD4.3.1 to run the job.
What are the different mr1 of cdh4 and mr of cdh3? Thanks, LiuLei 2013/9/30 Pradeep Gollakota <pradeep...@gmail.com> > I believe it's a difference between the version that your code was > compiled against vs the version that you're running against. Make sure that > you're not packaging hadoop jar's into your jar and make sure you're > compiling against the correct version as well. > > > On Sun, Sep 29, 2013 at 7:27 PM, lei liu <liulei...@gmail.com> wrote: > >> I use the CDH-4.3.1 and mr1, when I run one job, I am getting the >> following error. >> >> Exception in thread "main" java.lang.IncompatibleClassChangeError: Found >> interface org.apache.hadoop.mapreduce.JobContext, but class was expected >> >> at >> org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.getSplits(TableInputFormatBase.java:152) >> >> at >> org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:1063) >> >> at >> org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:1080) >> >> at org.apache.hadoop.mapred.JobClient.access$600(JobClient.java:174) >> at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:992) >> at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:945) >> at java.security.AccessController.doPrivileged(Nativ >> e Method) >> at javax.security.auth.Subject.doAs(Subject.java:396) >> >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408) >> >> at >> org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:945) >> at org.apache.hadoop.mapreduce.Job.submit(Job.java:566) >> at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:596) >> >> at >> com.taobao.hbase.test.RandomKVGenerater.main(RandomKVGenerater.java:248) >> >> >> How can I handle the error? >> >> Thanks, >> >> LiuLei >> > >
