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From Rohit Bhat <rohitbhat.n...@gmail.com>
Subject Issue while executing SimpleShortestPathsComputation
Date Tue, 03 Dec 2013 00:30:01 GMT
Hi,

I am new to Giraph. I have installed Yarn (hadoop 2.2.0) and have installed
Giraph on top of it. I have been trying to
execute SimpleShortestPathsComputation example but i am getting the error:

"java.lang.IllegalArgumentException: checkLocalJobRunnerConfiguration: When
using LocalJobRunner, you cannot run in split master / worker mode since
there is only 1 task at a time!"

I fixed this by adding an entry in mapred-site.xml for
mapreduce.jobtracker.address but now i am getting a different error:

*Exception in thread "main" java.lang.IncompatibleClassChangeError: Found
interface org.apache.hadoop.mapreduce.JobContext, but class was expected*
at
org.apache.giraph.bsp.BspOutputFormat.checkOutputSpecs(BspOutputFormat.java:43)
at
org.apache.hadoop.mapreduce.JobSubmitter.checkSpecs(JobSubmitter.java:456)
at
org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:342)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1268)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1265)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1265)
at org.apache.giraph.job.GiraphJob.run(GiraphJob.java:250)
at org.apache.giraph.GiraphRunner.run(GiraphRunner.java:94)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
at org.apache.giraph.GiraphRunner.main(GiraphRunner.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.main(RunJar.java:212)

*Is Giraph compatible with yarn? If yes, am i missing anything?*

Thanks,
Rohit

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