The interface/class change there means you are running a Hadoop cluster that doesn't match your Giraph build. You might take a look at the Giraph POM and see if there's a Maven build profile thats better suited to your your Hadoop version. On CDH5 Hadoop cluster, the hadoop_yarn profile is likely to be your only option.
Good luck, Eli On Thu, Aug 21, 2014 at 5:08 PM, Mohit Singh <[email protected]> wrote: > Hi, > So, I have Hadoop 2.3.0-cdh5.1.0 installed on my cluster... and I > compiled giraph thru the following command.. mvn clean package -DskipTests > -Dhadoop=non_secure -Phadoop_2.0.0 > So, the compilation worked just fine and then the pagerank benchmark also > succeeded.. > So, I am guessing giraph compiled just fine.. > > > Now, I am trying to run my code.. > hadoop jar graphAnalytics-0.0.1-SNAPSHOT-jar-with-dependencies.jar > org.apache.giraph.GiraphRunner > -Dgiraph.zkList=srv-110-07:2181,srv-110-08:2181,srv-210-08:2181 > org.examples.graphAnalytics.PageRankVertex -w 1 -vif > org.examples.graphAnalytics.PageRankInputFormat > > And I am getting this 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:458) > at > org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:343) > at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1295) > at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1292) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:415) > at.... > > I know, its an incomplete command but its already complaining.. :-/ > > My POM file looks like : > > <project xmlns="http://maven.apache.org/POM/4.0.0"; xmlns:xsi=" > http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation=" > http://maven.apache.org/POM/4.0.0 > http://maven.apache.org/xsd/maven-4.0.0.xsd";> > > <modelVersion>4.0.0</modelVersion> > > <groupId>org.rdio.graphanalytics</groupId> > > <artifactId>graphAnalytics</artifactId> > > <version>0.0.1-SNAPSHOT</version> > > <name>Graph Analytics Algorithms</name> > > <description>Package for Graph Analytics Algorithms > > </description> > > <repositories> > > <repository> > > <id>cloudera</id> > > <url>https://repository.cloudera.com/artifactory/cloudera-repos/</ > url> > > </repository> > > </repositories> > > <dependencies> > > <dependency> > > <groupId>org.apache.giraph</groupId> > > <artifactId>giraph-core</artifactId> > > <version>1.0.0</version> > > </dependency> > > <dependency> > > <groupId>junit</groupId> > > <artifactId>junit-dep</artifactId> > > <version>4.8.2</version> > > </dependency> > > <dependency> > > * <groupId>org.apache.hadoop</groupId>* > > * <artifactId>hadoop-client</artifactId>* > > * <version>2.3.0-cdh5.1.0</version>* > > </dependency> > > </dependencies> > > <build> > > <plugins> > > <plugin> > > <groupId>org.apache.maven.plugins</groupId> > > <artifactId>maven-compiler-plugin</artifactId> > > <version>2.1</version> > > <configuration> > > <source>1.6</source> > > <target>1.6</target> > > </configuration> > > </plugin> > > <plugin> > > <groupId>org.apache.maven.plugins</groupId> > > <artifactId>maven-assembly-plugin</artifactId> > > <version>2.4</version> > > <configuration> > > <descriptorRefs> > > <descriptorRef>jar-with-dependencies</descriptorRef> > > </descriptorRefs> > > > </configuration> > > <executions> > > <execution> > > <id>assemble-all</id> > > <phase>package</phase> > > <goals> > > <goal>single</goal> > > </goals> > > </execution> > > </executions> > > </plugin> > > </plugins> > > </build> > > </project> > > > How do i resolve this? > Thanks > > -- > Mohit > > "When you want success as badly as you want the air, then you will get it. > There is no other secret of success." > -Socrates >
