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
