[jira] [Created] (SPARK-34517) Unexpected result when using 'aggregateMessages' with 'outerJoinVertices'

["GH (Jira)" <ji...@apache.org>]

GH created SPARK-34517:
--------------------------

             Summary: Unexpected result when using 'aggregateMessages' with 'outerJoinVertices'
                 Key: SPARK-34517
                 URL: https://issues.apache.org/jira/browse/SPARK-34517
             Project: Spark
          Issue Type: Bug
          Components: GraphX
    Affects Versions: 3.0.2
         Environment: OpenJDK 1.8.0_275

Scala 2.12.10

Hadoop 3.3.0

Spark 3.0.2
            Reporter: GH


Using 'Graph.aggregateMessages' and 'Graph.outerJoinVertices' together when implementing an iterative graph-algorithm which is very similar to 'Graph.staticParallelPersonalizedPageRank'.

 

There will be a bug if 'outerJoinVertices' does not change the data-type of vertices. More specifically, 'aggregateMessages' gives the same results for some iteration, while the value of vertices was still changed and the attribute of a message is fully depend on the value of its source vertex.

 

I temporarily solve the problem by changing the data-type when using 'outerJoinVertices' and then change it back with 'mapVertices'. It showed that the problem is probably due to the incorrect updating of activeSet when 'outerJoinVertices' keeps the data-type of vertices. 



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org