I've recently upgraded my Hadoop instance from 0.20.2 to 2.3.0. I've verified that M/R jobs work correctly on the instance and am in the process of verifying that the instance is capable of executing Giraph jobs successfully. I'm currently trying to run the SimpleShortestPathsComputation from the examples and have encountered an error. Here's an excerpt from the log...
ERROR [org.apache.hadoop.yarn.client.api.async.impl.NMClientAsyncImpl #0] yarn.GiraphApplicationMaster (GiraphApplicationMaster.java:onStartContainerError(688)) - Failed to start Container container_... java.net.UnknownHostException: Invalid host name: local host is: (unknown)... The command I'm using to execute the job is... $HADOOP_HOME/bin/hadoop jar $GIRAPH_COMPLETE_JAR \ org.apache.giraph.GiraphRunner \ org.apache.giraph.examples.SimpleShortestPathsComputation \ -vif org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexInputFormat \ -vip tiny.txt \ -vof org.apache.giraph.io.formats.IdWithValueTextOutputFormat \ -op shortest-paths \ -w 1 \ -yj $GIRAPH_COMPLETE_JAR I'm guessing that something isn't configured correctly in my Hadoop instance or I'm missing a parameter in the execution of the job. Note that I have also tried tacking on the following additional parameters and I still see the error... -ca giraph.zkList=localhost:2181 -ca giraph.SplitMasterWorker=true -ca mapred.job.tracker=54311 -ca mapreduce.job.tracker=54311 Any idea what might be wrong? Larry
