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From Carmen Manzulli <carmenmanzu...@gmail.com>
Subject Couldn't instantiate
Date Mon, 30 Jun 2014 13:38:56 GMT
Hi,

I'm trying to run a selectionComputation with my own code for
VertexInputFormat but giraph' job starts to work and then fails with:




java.lang.IllegalStateException: run: Caught an unrecoverable
exception newInstance: Couldn't instantiate
sisinflab.SimpleRDFVertexInputFormat
	at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:101)
	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:364)
	at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
	at org.apache.hadoop.mapred.Child.main(Child.java:249)
Caused by: java.lang.IllegalStateException: newInstance: Couldn't
instantiate sisinflab.SimpleRDFVertexInputFormat
	at org.apache.giraph.utils.ReflectionUtils.newInstance(ReflectionUtils.java:105)
	at org.apache.giraph.conf.ImmutableClassesGiraphConfiguration.createVertexInputFormat(ImmutableClassesGiraphConfiguration.java:235)
	at org.apache.giraph.conf.ImmutableClassesGiraphConfiguration.createWrappedVertexInputFormat(ImmutableClassesGiraphConfiguration.java:246)
	at org.apache.giraph.graph.GraphTaskManager.checkInput(GraphTaskManager.java:171)
	at org.apache.giraph.graph.GraphTaskManager.setup(GraphTaskManager.java:207)
	at org.apache.giraph.graph.GraphMapper.setup(GraphMapper.java:59)
	at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:89)
	... 7 more
Caused by: java.lang.InstantiationException
	at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:48)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at java.lang.Class.newInstance(Class.java:374)
	at org.apache.giraph.utils.ReflectionUtils.newInstance(ReflectionUtils.java:103)
	... 13 more


what does it mean? where is the problem?

Who can help me?

Carmen

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