Hi,

You built Giraph for the Hadoop version 1.2.1 which is evident from your command line
hadoop jar /usr/local/giraph/giraph-examples/target/giraph-examples-1.1.0-SNAPSHOT-for-hadoop-1.2.1-jar-with-dependencies.jar 

You have the build Giraph against the Hadoop version you'll be using. If you are using Hadoop 2.4.0, the command to build would be
mvn -Phadoop_2 -Dhadoop.version=2.4.0 -DskipTests ...
or
mvn -Phadoop_yarn -Dhadoop.version=2.4.0 -DskipTests ...

You can find this in the README file from Giraph trunk

Hope this helps.



On Tue, Aug 12, 2014 at 10:10 AM, Vikalp Handa <handa.vikalp@gmail.com> wrote:
Hi everyone,

I am new to Apache Giraph and would like execute Shortestpath and PageRank example code on Hadoop 2.4.0 single node cluster (my machine) having Centos 6.5.

I have successfully build Giraph on my machine but unable to execute ShortestPath code.

Please let me know if there are any dependencies to be resolved before code execution.

P.S. :
Command used:
hadoop jar /usr/local/giraph/giraph-examples/target/giraph-examples-1.1.0-SNAPSHOT-for-hadoop-1.2.1-jar-with-dependencies.jar org.apache.giraph.GiraphRunner org.apache.giraph.examples.SimpleShortestPathsComputation -vif org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexInputFormat -vip /user/hadoop/input/tiny_graph.txt -vof org.apache.giraph.io.formats.IdWithValueTextOutputFormat -op /user/hduser/output/shortestpaths -w 1  -ca giraph.SplitMasterWorker=false

Execution Result:
14/08/11 18:48:37 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
14/08/11 18:48:40 INFO utils.ConfigurationUtils: No edge input format specified. Ensure your InputFormat does not require one.
14/08/11 18:48:40 INFO utils.ConfigurationUtils: No edge output format specified. Ensure your OutputFormat does not require one.
14/08/11 18:48:40 INFO utils.ConfigurationUtils: Setting custom argument [giraph.SplitMasterWorker] to [false] in GiraphConfiguration
14/08/11 18:48:40 INFO Configuration.deprecation: mapreduce.job.counters.limit is deprecated. Instead, use mapreduce.job.counters.max
14/08/11 18:48:40 INFO Configuration.deprecation: mapred.job.map.memory.mb is deprecated. Instead, use mapreduce.map.memory.mb
14/08/11 18:48:40 INFO Configuration.deprecation: mapred.job.reduce.memory.mb is deprecated. Instead, use mapreduce.reduce.memory.mb
14/08/11 18:48:40 INFO Configuration.deprecation: mapred.map.tasks.speculative.execution is deprecated. Instead, use mapreduce.map.speculative
14/08/11 18:48:40 INFO Configuration.deprecation: mapreduce.user.classpath.first is deprecated. Instead, use mapreduce.job.user.classpath.first
14/08/11 18:48:40 INFO Configuration.deprecation: mapred.map.max.attempts is deprecated. Instead, use mapreduce.map.maxattempts
14/08/11 18:48:40 INFO job.GiraphJob: run: Since checkpointing is disabled (default), do not allow any task retries (setting mapred.map.max.attempts = 0, old value = 4)
14/08/11 18:48:40 INFO Configuration.deprecation: mapred.job.tracker is deprecated. Instead, use mapreduce.jobtracker.address
14/08/11 18:48:41 INFO Configuration.deprecation: session.id is deprecated. Instead, use dfs.metrics.session-id
14/08/11 18:48:41 INFO jvm.JvmMetrics: Initializing JVM Metrics with processName=JobTracker, sessionId=
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:44)
at org.apache.hadoop.mapreduce.JobSubmitter.checkSpecs(JobSubmitter.java:458)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:343)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1285)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1282)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1282)
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:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.hadoop.util.RunJar.main(RunJar.java:212)




Regards,
Vikalp Handa