Hello, I have successfully set up hadoop 1.2.1 and giraph 1.1.0 and tested the SimpleShortestPathsComputation as shown in the quick start guide.
However, I am more interested in the SimplePageRankComputation and I fail to execute it. In particular, I issue the following command: $HADOOP_HOME/bin/hadoop jar $GIRAPH_HOME/giraph-examples/target/giraph-examples-1.1.0-for-hadoop-1.2.1-jar-with-dependencies.jar org.apache.giraph.GiraphRunner org.apache.giraph.examples.SimplePageRankComputation -vif org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexInputFormat -vip /user/hduser/input/tiny_graph.txt -vof org.apache.giraph.io.formats.IdWithValueTextOutputFormat -op /user/hduser/output/pagerank -w 1 I use the same graph and format as with the SimpleShortestPathsComputation task. The job is successfully submitted but fails after 10 minutes with the following task error: Task attempt_201507131607_0013_m_000000_0 failed to report status for 600 seconds. Killing! Am I doing something wrong? Should I provide more arguments when I submit the task? Thank you, Panagiotis The output is the following: 15/07/15 10:43:11 INFO utils.ConfigurationUtils: No edge input format specified. Ensure your InputFormat does not require one. 15/07/15 10:43:11 INFO utils.ConfigurationUtils: No edge output format specified. Ensure your OutputFormat does not require one. 15/07/15 10:43:12 INFO job.GiraphJob: run: Since checkpointing is disabled (default), do not allow any task retries (setting mapred.map.max.attempts = 0, old value = 4) 15/07/15 10:43:13 INFO job.GiraphJob: Tracking URL: http://hdnode01:50030/jobdetails.jsp?jobid=job_201507131607_0013 15/07/15 10:43:13 INFO job.GiraphJob: Waiting for resources... Job will start only when it gets all 2 mappers 15/07/15 10:44:24 INFO job.HaltApplicationUtils$DefaultHaltInstructionsWriter: writeHaltInstructions: To halt after next superstep execute: 'bin/halt-application --zkServer giraph01:22181 --zkNode /_hadoopBsp/job_201507131607_0013/_haltComputation' 15/07/15 10:44:24 INFO mapred.JobClient: Running job: job_201507131607_0013 15/07/15 10:44:25 INFO mapred.JobClient: map 100% reduce 0% 15/07/15 10:53:32 INFO mapred.JobClient: map 0% reduce 0% 15/07/15 10:53:33 INFO mapred.JobClient: Job complete: job_201507131607_0013 15/07/15 10:53:33 INFO mapred.JobClient: Counters: 6 15/07/15 10:53:33 INFO mapred.JobClient: Job Counters 15/07/15 10:53:33 INFO mapred.JobClient: SLOTS_MILLIS_MAPS=616166 15/07/15 10:53:33 INFO mapred.JobClient: Total time spent by all reduces waiting after reserving slots (ms)=0 15/07/15 10:53:33 INFO mapred.JobClient: Total time spent by all maps waiting after reserving slots (ms)=0 15/07/15 10:53:33 INFO mapred.JobClient: Launched map tasks=2 15/07/15 10:53:33 INFO mapred.JobClient: SLOTS_MILLIS_REDUCES=0 15/07/15 10:53:33 INFO mapred.JobClient: Failed map tasks=1
