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Sqoop, mail # user - Exception of import-tool with Sqoop 1.4.3 and Hadoop 1.1.1


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Re: Exception of import-tool with Sqoop 1.4.3 and Hadoop 1.1.1
sam liu 2013-07-16, 03:19
Thanks Jarek
2013/7/12 Jarek Jarcec Cecho <[EMAIL PROTECTED]>

> Hi Sam,
> The exception java.lang.IncompatibleClassChangeError: Found class but
> interface was expected is very common when one is using code compiled
> against Hadoop 1 on Hadoop 2 or vice versa. You seem to be using correctly
> the -Dhadoopversion=100 to build Sqoop against Hadoop 1, however ant target
> tar won't recompile the sources in case that they are already compiled
> (even when they are compiled against wrong hadoop version). Thus I would
> suggest to run following command instead:
>
>   ant clean tar -Dhadoopversion=100
>
> Jarcec
>
> On Fri, Jul 12, 2013 at 03:31:59PM +0800, sam liu wrote:
> > Hi Experts,
> >
> > I built sqoop project to generate sqoop-1.4.3.bin__hadoop-1.0.0.tar.gz
> > using command:'ant -Dhadoopversion=100 tar'. Before that, I clean up my
> ivy
> > repository.
> >
> > However, using the generated sqoop-1.4.4 project, I still encountered
> > IncompatibleClassChangeError as below. My command likes 'sqoop import
> > --connect jdbc:db2://hostname:50000/SAMPLE --table DB2ADMIN.DB2TEST_TBL
> > --username
> > user --password passwrd --target-dir /tmp/DB2TEST_TBL --split-by id'.
> >
> > Any commnts? Thanks!
> >
> > 13/07/11 23:17:31 INFO mapred.JobClient: Cleaning up the staging area
> > hdfs://
> >
> 127.0.0.1:9010/home/temp/hadoop/mapred/staging/root/.staging/job_201307112228_0013
> > Exception in thread "main" java.lang.IncompatibleClassChangeError: Found
> > class org.apache.hadoop.mapreduce.JobContext, but interface was expected
> >         at
> >
> org.apache.sqoop.config.ConfigurationHelper.getJobNumMaps(ConfigurationHelper.java:53)
> >         at
> >
> com.cloudera.sqoop.config.ConfigurationHelper.getJobNumMaps(ConfigurationHelper.java:36)
> >         at
> >
> org.apache.sqoop.mapreduce.db.DataDrivenDBInputFormat.getSplits(DataDrivenDBInputFormat.java:121)
> >         at
> > org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:1024)
> >         at
> > org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:1041)
> >         at
> org.apache.hadoop.mapred.JobClient.access$700(JobClient.java:179)
> >         at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:959)
> >         at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:912)
> >         at java.security.AccessController.doPrivileged(Native Method)
> >         at javax.security.auth.Subject.doAs(Subject.java:396)
> >         at
> >
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1136)
> >         at
> > org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:912)
> >         at org.apache.hadoop.mapreduce.Job.submit(Job.java:500)
> >         at
> org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:530)
> >         at
> >
> org.apache.sqoop.mapreduce.ImportJobBase.doSubmitJob(ImportJobBase.java:173)
> >         at
> > org.apache.sqoop.mapreduce.ImportJobBase.runJob(ImportJobBase.java:151)
> >         at
> >
> org.apache.sqoop.mapreduce.ImportJobBase.runImport(ImportJobBase.java:221)
> >         at
> > org.apache.sqoop.manager.SqlManager.importTable(SqlManager.java:545)
> >         at
> > org.apache.sqoop.manager.Db2Manager.importTable(Db2Manager.java:64)
> >         at
> org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:403)
> >         at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:476)
> >         at org.apache.sqoop.Sqoop.run(Sqoop.java:145)
> >         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> >         at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:181)
> >         at org.apache.sqoop.Sqoop.runTool(Sqoop.java:220)
> >         at org.apache.sqoop.Sqoop.runTool(Sqoop.java:229)
> >         at org.apache.sqoop.Sqoop.main(Sqoop.java:238)
> >
> >
> >
> >
> > --
> >
> > Sam Liu
>

--

Sam Liu