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From John Yost <soozandjohny...@gmail.com>
Subject Re: Couldn't instantiate
Date Tue, 01 Jul 2014 02:23:44 GMT
Hi Carmen,

Question--did you only define an arguments constructor?  If so, I think you
are getting this because you did not define a no-arguments constructor with
public visibility.  If this is not the case, I recommend posting your
source code and I will be happy to help.

--John


On Mon, Jun 30, 2014 at 9:38 AM, Carmen Manzulli <carmenmanzulli@gmail.com>
wrote:

> 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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