Actually, isn't that because the default constructor is private? You probably need to write your own or subclass NullWritable with a public default constructor.


On 12/5/11 3:59 PM, Inci Cetindil wrote:
I was trying to use NullWritable as the type of my edge values. But it causes 
an IllegalAccessException when BspUtils.createEdgeValue() method tries to 
instantiate it; since NullWritable is Singleton with a private constructor. Is 
there a way to use NullWritable, or do I need to use another Writable?


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