Rohit created SPARK-18568:
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Summary: vertex attributes in the edge triplet not getting updated
in super steps for Pregel API
Key: SPARK-18568
URL: https://issues.apache.org/jira/browse/SPARK-18568
Project: Spark
Issue Type: Bug
Components: GraphX
Affects Versions: 2.0.2
Reporter: Rohit
When running the Pregel API with vertex attribute as complex objects. The
vertex attributes are not getting updated in the triplet view. For example if
the vertex attributes changes in first superstep for vertex"a" the triplet src
attributes in the send msg program for the first super step gets the latest
attributes of the vertex "a" but on 2nd super step if the vertex attributes
changes in the vprog the edge triplets are not updated with this new state of
the vertex for all the edge triplets having the vertex "a" as src or
destination. if I re-create the graph using g = Graph(g.vertices, g.edges) in
the while loop before the next super step then its getting updated. But this
fix is not good performance wise. A detailed description of the bug along with
the code to recreate it is in the attached URL.
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