Thank you for the advice Claudio I updated the run command to use different io classes
*bin/hadoop jar /home/ubuntu/giraph/giraph-examples/target/giraph-examples-1.1.0-SNAPSHOT-for-hadoop-1.0.2-jar-with-dependencies.jar * * org.apache.giraph.GiraphRunner org.apache.giraph.examples.SimpleShortestPathsComputation * *-eif org.apache.giraph.io.EdgeInputFormat* * -eip /simpleEdgeList/SimpleEdgeList.tsv* *-of org.apache.giraph.io.formats.IdWithValueTextOutputFormat * *-op /outShortestEdgeList01 * *-w 1* * * This code does start a MapReduce job but progress stays at 0%. The log file for the job has the following IOException error; *MapAttempt TASK_TYPE="MAP" TASKID="task_201306031954_0002_m_000000" TASK_ATTEMPT_ID="attempt_201306031954_0002_m_000000_0" TASK_STATUS="FAILED" FINISH_TIME="1370282492527" HOSTNAME="ubuntu-VirtualBox" ERROR="java\.lang\.Throwable: Child Error* * at org\.apache\.hadoop\.mapred\.TaskRunner\.run(TaskRunner\.java:271)* *Caused by: java\.io\.IOException: Task process exit with nonzero status of 1\.* * at org\.apache\.hadoop\.mapred\.TaskRunner\.run(TaskRunner\.java:258)* So, this leaves 3 questions; Is the edge list file format correct? (a tab separated file with a .tsv extension) Is the input class correct? Is the output class correct? Thank you, Peter On 3 June 2013 01:05, Claudio Martella <claudio.marte...@gmail.com> wrote: > Hi Peter, > > shortly, those are abstract classes, that's why you cannot instantiate > them. You'll have to use a specific class extending those classes that are > aware of the types of the signature of the vertex (I, V, E, M). check out > some classes in the format package that have those types in the class name. > > > On Mon, Jun 3, 2013 at 1:25 AM, Peter Holland <d99991...@mydit.ie> wrote: > >> Hello, >> I'm new to Giraph and I'm trying to run SimpleShortestPathsComputation >> using an edge list input file. I have some questions and and error message >> that hopefully I can get some help with. >> >> Edge List File Format >> What is the correct format for an edge list input file? >> I have a .tsv file with a vertex represented as an integer. Is this >> correct? >> >> 5 11 >> 1 6 >> 6 9 >> 6 8 >> 8 9 >> ..... >> >> Input File Class: >> Is org.apache.giraph.io.formats.*TextEdgeInputFormat *the only input >> format that can be used for edge lists? >> >> Output File Class: >> Does the output format depend on the job you are running? I have been >> using org.apache.giraph.io.formats.*TextVertexOutputFormat* for >> SimpleShortestPathsComputation. >> >> Run Command: >> So this is the command I am using to try to run the >> SimpleShortestPathsComputation using an edge list input file. >> >> *bin/hadoop jar >> /home/ubuntu/giraph/giraph-examples/target/giraph-examples-1.1.0-SNAPSHOT-for-hadoop-1.0.2-jar-with-dependencies.jar >> org.apache.giraph.GiraphRunner >> org.apache.giraph.examples.SimpleShortestPathsComputation * >> *-eif org.apache.giraph.io.formats.TextEdgeInputFormat * >> *-eip /simpleEdgeList/SimpleEdgeList.tsv * >> *-of org.apache.giraph.io.formats.TextVertexOutputFormat * >> *-op /outShortest* >> *-w 3* >> >> Error Message >> When I run the above command I get the following error message: >> Exception in thread "main" java.lang.IllegalStateException: newInstance: >> Couldn't instantiate org.apache.giraph.io.formats.TextVertexOutputFormat >> >> Thank you, >> Peter >> > > > > -- > Claudio Martella > claudio.marte...@gmail.com >
