Hi David,
So from the errors, it appears that your input has multiple vertices
with the same vertex id. Currently we throw an exception to prevent
this from happening as it is typically not what you want. You probably
want to watch the vertices being processed from the vertex input format
and see why you are getting duplicates. It's likely to be either an
error with the data actually have vertices with the same vertex id or an
error with your custom vertex input format.
To help debug, you might want to add some logging to your record reader
and print the vertex ids or you can add some logging to where that code
is called in BspServiceWorker#readVerticesFromInputSplit().
Hope that helps,
Avery
On 1/29/12 8:13 PM, David Garcia wrote:
Hello, I get this error when I try run my job:
2012-01-29 21:50:18,494 INFO org.apache.giraph.graph.BspServiceWorker:
reserveInputSplit: reservedPath = null, 1 of 1 InputSplits are finished.
2012-01-29 21:50:18,494 INFO org.apache.giraph.graph.BspServiceWorker: setup:
Finally loaded a total of (v=0, e=0)
2012-01-29 21:50:18,764 INFO org.apache.giraph.graph.BspService: process:
inputSplitsAllDoneChanged (all vertices sent from input splits)
2012-01-29 21:50:18,766 ERROR org.apache.giraph.graph.GraphMapper: setup:
Caught exception just before end of setup
java.lang.IllegalStateException: moveVerticesToWorker: Vertex
Vertex(id=zzYNBgKt2LF6ClLA2eMBzuN7SkA.,value=org.apache.hadoop.io.MapWritable@5ce8787a,#edges=0)
already exists!
at
org.apache.giraph.graph.BspServiceWorker.movePartitionsToWorker(BspServiceWorker.java:1389)
at
org.apache.giraph.graph.BspServiceWorker.setup(BspServiceWorker.java:624)
at org.apache.giraph.graph.GraphMapper.setup(GraphMapper.java:458)
.
.
.
I'm not sure where the start debugging. . .BspServiceWorker is hella big. All
input is welcome. As I mentioned, I'm processing a sequenceFile that has Text
keys and MapWritable Values. I would like the vertices to have Text indices
and MapWritable values. (I'm not inserting any edges for the time being. . .I
just want to see the file get split properly). I have implemented custom input
formats and record readers. Thx
-Dave
