I am having some trouble getting these examples running. I’m using giraph version 1.1.0 and hadoop 0.20.2. I am using the following json file as input:
[0,0,[[1,1],[3,3]]] [1,0,[[0,1],[2,2],[3,1]]] [2,0,[[1,2],[4,4]]] [3,0,[[0,3],[1,1],[4,4]]] [4,0,[[3,4],[2,4]]] The command I use is: hadoop jar /path-to-giraph/giraph-core/target/giraph-1.1.0-SNAPSHOT-for-hadoop-0.20.203.0-jar-with-dependencies.jar org.apache.giraph.GiraphRunner org.apache.giraph.examples.SimpleShortestPathsComputation -vif org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexInputFormat -vip /path-to-input/input_file.json -of org.apache.giraph.io.formats.IdWithValueTextOutputFormat -op /path-to-output/outShortest -w 1 I see the following output. 13/07/29 14:36:06 INFO utils.ConfigurationUtils: No edge input format specified. Ensure your InputFormat does not require one. 13/07/29 14:36:06 INFO job.GiraphJob: run: Since checkpointing is disabled (default), do not allow any task retries (setting mapred.map.max.attempts = 0, old value = 4) 13/07/29 14:36:20 INFO mapred.JobClient: Running job: job_201307232135_0588 13/07/29 14:36:21 INFO mapred.JobClient: map 0% reduce 0% 13/07/29 14:36:52 INFO mapred.JobClient: map 50% reduce 0% 13/07/29 14:47:24 INFO mapred.JobClient: map 0% reduce 0% 13/07/29 14:47:39 INFO mapred.JobClient: Job complete: job_201307232135_0588 13/07/29 14:47:39 INFO mapred.JobClient: Counters: 6 13/07/29 14:47:39 INFO mapred.JobClient: Job Counters 13/07/29 14:47:39 INFO mapred.JobClient: SLOTS_MILLIS_MAPS=670508 13/07/29 14:47:39 INFO mapred.JobClient: Total time spent by all reduces waiting after reserving slots (ms)=0 13/07/29 14:47:39 INFO mapred.JobClient: Total time spent by all maps waiting after reserving slots (ms)=0 13/07/29 14:47:39 INFO mapred.JobClient: Launched map tasks=2 13/07/29 14:47:39 INFO mapred.JobClient: SLOTS_MILLIS_REDUCES=0 13/07/29 14:47:39 INFO mapred.JobClient: Failed map tasks=1 When I check the job tracker, I see that two map jobs were killed, with the following errors: java.lang.Throwable: Child Error at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:242) Caused by: java.io.IOException: Task process exit with nonzero status of 1. at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:229) java.lang.IllegalStateException: run: Caught an unrecoverable exception exists: Failed to check /_hadoopBsp/job_201307232135_0588/_applicationAttemptsDir/0/_superstepDir/-1/_addressesAndPartitions after 3 tries! at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:101) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:647) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:323) at org.apache.hadoop.mapred.Child$4.run(Child.java:270) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1157) at org.apache.hadoop.mapred.Child.main(Child.java:264) Caused by: java.lang.IllegalStateException: exists: Failed to check /_hadoopBsp/job_201307232135_0588/_applicationAttemptsDir/0/_superstepDir/-1/_addressesAndPartitions after 3 tries! at org.apache.giraph.zk.ZooKeeperExt.exists(ZooKeeperExt.java:369) at org.apache.giraph.worker.BspServiceWorker.s Task attempt_201307232135_0588_m_000001_0 failed to report status for 600 seconds. Killing! Any idea what the problem is? Thanks in advance.
