Hi, I recently started working on Haddop. Currently I have created a setup on 3 machines, where one is the job-tracker and all three are tasktrackers. The hadoop is working absolutely fine with the hadoop examples. When I ran Giraph eg of SimpleShortestPathsVertex , it worked absolutely fine when number of workers=1. When I increase the number of workers to 2 or 3 the program hangs up.
I'm using the following command to run the giraph jar : hadoop jar /home/harshit/Downloads/giraph-0.1.0-incubating-src/target/giraph-0.1-jar-with-dependencies.jar org.apache.giraph.examples.SimpleShortestPathsVertex -Dgiraph.zkList=master:22181 /user/hduser/giraph/spig /user/hduser/giraph/output/spig90/ 6 2 The program sticks here : 12/06/02 15:02:36 INFO mapred.JobClient: Running job: job_201206021425_0006 12/06/02 15:02:37 INFO mapred.JobClient: map 0% reduce 0% 12/06/02 15:02:54 INFO mapred.JobClient: map 33% reduce 0% A part of the tasktracker log of machine1 is : 2012-06-02 15:02:46,899 INFO org.apache.hadoop.mapred.TaskTracker: JVM with ID: jvm_201206021425_0006_m_-330406748 given task: attempt_201206021425_0006_m_000001_0 2012-06-02 15:02:53,848 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201206021425_0006_m_000001_0 0.0% startSuperstep: WORKER_ONLY - Attempt=0, Superstep=-1 and part of the tasktracker log of machine2 is: 2012-06-02 15:00:36,960 INFO org.apache.hadoop.mapred.TaskTracker: JVM with ID: jvm_201206021425_0006_m_1076001946 given task: attempt_201206021425_0006_m_000000_0 2012-06-02 15:00:44,124 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201206021425_0006_m_000000_0 1.0% MASTER_ONLY - 0 finished out of 2 on superstep -1 2012-06-02 15:01:44,215 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201206021425_0006_m_000000_0 1.0% MASTER_ONLY - 0 finished out of 2 on superstep -1 Please provide any help possible. Am I missing out anything or there is some other problem?? Thanks, Harshit Sharan
