Hello Everybody,
I'm very new to giraph and I would like to run some toy example before
trying to add my parts of code. In particular I would like to run a
PageRank computation on a toy graph stored on a text file with a
format that is compatible with
org.apache.giraph.io.IntIntNullIntTextInputFormat
When run with
hadoop jar giraph-0.2-SNAPSHOT-for-hadoop-0.20.203.0-jar-with-dependencies.jar
org.apache.giraph.GiraphRunner \
org.apache.giraph.examples.SimplePageRankVertex -w 1 \
-if org.apache.giraph.io.IntIntNullIntTextInputFormat \
-of org.apache.giraph.io.IdWithValueTextOutputFormat
I got the following error:
12/09/06 09:59:24 INFO giraph.GiraphRunner: No input path specified.
Ensure your InputFormat does not require one.
12/09/06 09:59:24 INFO giraph.GiraphRunner: No output path specified.
Ensure your OutputFormat does not require one.
Exception in thread "main" java.lang.IllegalArgumentException:
checkClassTypes: Vertex index types don't match, vertex - class
org.apache.hadoop.io.LongWritable, vertex input format - class
org.apache.hadoop.io.IntWritable
at
org.apache.giraph.graph.GiraphTypeValidator.verifyVertexInputFormatGenericTypes(GiraphTypeValidator.java:116)
at
org.apache.giraph.graph.GiraphTypeValidator.validateClassTypes(GiraphTypeValidator.java:100)
at org.apache.giraph.GiraphRunner.run(GiraphRunner.java:231)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
at org.apache.giraph.GiraphRunner.main(GiraphRunner.java:247)
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:156)
I know this might sound stupid... but... I'm really stuck, here! :)
Is there any OuputFormat compatible with IntIntNullIntTextInputFormat?
Thanks in advance
f
