Hi,everyone.

I have encountered a problem to using OffHeapVerticesInfo to load vertex in 
RAM. I set the configuration of the job in this way : 


Conf.setClass("hama.graph.vertices.info",org.apache.hama.graph.OffHeapVerticesInfo.class,org.apache.hama.graph.VerticesInfo.class);‍‍


and the version of hama I used is latest hama-0.6.4., and the algorithm is just 
a simple PageRank. Then I get the error:





I tried to solve this bug with add Apache DirectMemory libraries to lib folder 
but it doesn't work. I choose two jar from maven dependencies: 
directmemory-cache-0.2.jar
‍directmemory-kryo-0.2.jar
to add in hama's lib folder.


The error information is as same as last time.


I want know is there anyone meet the same question as me, and how to solve it. 


Thanks a lot.




------------------
Manna Xu
Cluster and Grid Computing Lab
School of Computer Science and Technology
Huazhong University of Science and Technology
Wuhan, 430074, China

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