The job expects the input data in adjacency list format, each line should look like:
vertex neighbor1 neighbor2 .... --sebastian On 07.08.2012 00:02, Vishal Patel wrote: > Thanks Sebastian, it runs fine now. However, the output comes back as > > 0 0 > 1 1 > 2 2 > 3 3 > 4 4 > 5 5 > 6 6 > .. > > I have an unsorted edge file with just int values. > http://www.ics.uci.edu/~vishalrp/public/testg.txt > > My test graph (head below) has 10,000 nodes ( from 0 to 9999) and 9998 > edges. There are 4 connected components in the graph. > > 0 5800 > 0 5981 > 1 1239 > 1 2989 > 1 3961 > 2 5417 > 2 7350 > > What am I doing wrong? Also, in general does the graph have to have int > values for nodes? Or can I have strings? > > Appreciate your help! > > Vishal > > > > > On Mon, Aug 6, 2012 at 2:22 PM, Sebastian Schelter <s...@apache.org> wrote: > >> You cannot run the vertex class directly. Instead you can use >> GiraphRunner, e.g. >> >> hadoop jar giraph-jar-with-dependencies.jar >> org.apache.giraph.GiraphRunner >> org.apache.giraph.examples.ConnectedComponentsVertex --inputFormat >> org.apache.giraph.examples.IntIntNullIntTextInputFormat --inputPath >> hdfs:///path/to/input --outputFormat >> org.apache.giraph.examples.VertexWithComponentTextOutputFormat >> --outputPath hdfs:///path/to/output --workers numWorkers --combiner >> org.apache.giraph.examples.MinimumIntCombiner >> >> --sebastian >> >> >> 2012/8/6 Vishal Patel <write2vis...@gmail.com>: >>> Hi, I am trying to run the connected-components example. I have giraph >>> installed, all the test pass on a 3 node cluster running hadoop-1.0.3/ >>> >>> The main method is missing in the ConnectedComponentsVertex class >>> >>> cd target/classes >>> hadoop jar ../giraph-0.1-jar-with-dependencies.jar >>> org.apache.giraph.examples.ConnectedComponentsVertex >>> >>> Exception in thread "main" java.lang.NoSuchMethodException: >>> >> org.apache.giraph.examples.ConnectedComponentsVertex.main([Ljava.lang.String;) >>> at java.lang.Class.getMethod(Class.java:1622) >>> at org.apache.hadoop.util.RunJar.main(RunJar.java:150) >>> >>> Can someone please help me with running this example? >>> >>> Vishal >>> >> >
