with the only problem that you picked an abstract class again... I advised you to use an inputformat that has the name of the types in the class name, hence org.apache.giraph.io.formats.IntNullTextEdgeInputFormat should work for you.
On Mon, Jun 3, 2013 at 9:34 PM, Peter Holland <d99991...@mydit.ie> wrote: > 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 >> > > -- Claudio Martella claudio.marte...@gmail.com
