Hey Kostas,
I don't know if this will help but there is a scenario that can
explain your situation.
Check to see if you create ALL the nodes that you have in your graph.
What I mean is:
Suppose we have this input file,
1 2
2 1
2 3
We have nodes 1,2 and 3 where 1 is pointing to 2 and 2 is pointing to
1 and 3. (Directed)
If you use the vertex reader from one of the examples from wiki, we will
result with
2 BSPpeers(the vertices) , the one with ID 1 and the second with ID 2.
The node 3 will not be
inserted as an active Vertex because the VertexInputReader class will
not return it.
If this isn't so clear, then the simple solution:
If a node doesn't have outgoing edges and the format is the above,
insert a new line in the file
with the ID of the node and some character that follows it. In our
example the input file would be:
1 2
2 1
2 3
3 $
The dollar sign is just an example too, you can put whatever you like or
even a whole sentece.
We have to write it in that way because if the Reader takes a sentece
without a space spliting
the line, it gives an exception.
So this would be wrong:
1 2
2 1
2 3
3$
Don't forget the space between the ID and the character! Hope it helps!
And sorry for the long post..!
Στις 11/5/2013 3:26 μμ, ο/η Edward J. Yoon έγραψε:
See
http://svn.apache.org/repos/asf/hama/trunk/graph/src/main/java/org/apache/hama/graph/GraphJobRunner.java
and ctrl + f + 'vertex.setActive();'. You can use the log4j or
System.out + local mode.
Yes, or please use the TRUNK.
On Sat, May 11, 2013 at 7:36 PM, Kostas Xirog <[email protected]> wrote:
Hello,
I'm having unusual issues with Hama, where messages get sent to nodes at
some point but these nodes that are supposed to recieve the messages don't
wake up and don't execute the compute function... Is there a way I can see
the graph data that hama creates before the computation just to be certain
that everything went well during the data entry?
P.S. I'm currently using Hama 0.6, should I upgrade to 0.6.1 ? Do you think
it would help?
Thank you in advance
