Hello, I try to use the RandomInputFormat. My giraph-job is submitted via the following command:
hadoop jar giraph-ex.jar org.apache.giraph.GiraphRunner -Dgiraph.zkList= 127.0.0.1:2181 -libjars giraph-core.jar org.apache.giraph.examples.SimpleShortestPathsVertex -eif org.apache.giraph.io.formats.PseudoRandomEdgeInputFormat -vif org.apache.giraph.io.formats.PseudoRandomVertexInputFormat -of org.apache.giraph.io.formats.IdWithValueTextOutputFormat -op /user/cloudera/goutput/shortestpaths_rand_$NOW -w 1 -ca giraph.pseudoRandomInputFormat.edgesPerVertex=10 but I get the following exception: 13/11/04 01:28:54 INFO utils.ConfigurationUtils: Setting custom argument [giraph.pseudoRandomInputFormat.edgesPerVertex] to [10] in GiraphConfiguration 13/11/04 01:28:54 INFO utils.ConfigurationUtils: No input path for vertex data was specified. Ensure your InputFormat does not require one. 13/11/04 01:28:54 INFO utils.ConfigurationUtils: No input path for edge data was specified. Ensure your InputFormat does not require one. Exception in thread "main" java.lang.IllegalArgumentException: checkClassTypes: Edge value types don't match, vertex - class org.apache.hadoop.io.FloatWritable, vertex input format - class org.apache.hadoop.io.DoubleWritable at org.apache.giraph.job.GiraphConfigurationValidator.verifyVertexInputFormatGenericTypes(GiraphConfigurationValidator.java:245) at org.apache.giraph.job.GiraphConfigurationValidator.validateConfiguration(GiraphConfigurationValidator.java:122) at org.apache.giraph.utils.ConfigurationUtils.parseArgs(ConfigurationUtils.java:154) at org.apache.giraph.GiraphRunner.run(GiraphRunner.java:74) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84) at org.apache.giraph.GiraphRunner.main(GiraphRunner.java:124) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.RunJar.main(RunJar.java:208) I think that I have not all required command line parameters set. But the problem is, I can not find any docu, which explains how to run giraph with random networks, generated on the fly. The job runs with the tiny_graph.txt file (and appropriate parameters) but nit with the random format. Could anybody please help me to find out how to use the *random graph* and the *watts strogatz model* which are mentioned by Claudio in this mail: *http://mail-archives.apache.org/mod_mbox/giraph-user/201310.mbox/%3cof4e9a3736.19e56fe9-on85257bff.000b4243-85257bff.000d8...@us.ibm.com%3E <http://mail-archives.apache.org/mod_mbox/giraph-user/201310.mbox/%3cof4e9a3736.19e56fe9-on85257bff.000b4243-85257bff.000d8...@us.ibm.com%3E>* Can I use the RandomVertex and the RandomEdgeInputFormat to build random graphs on the fly? Thanks a lot in advance. Best wishes Mirko
