Robin Cheng created SPARK-10228:
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Summary: Integer overflow in VertexRDDImpl.count
Key: SPARK-10228
URL: https://issues.apache.org/jira/browse/SPARK-10228
Project: Spark
Issue Type: Bug
Components: GraphX
Affects Versions: 1.4.1
Reporter: Robin Cheng
VertexRDDImpl overrides RDD.count() but aggregates Int instead of Long:
/** The number of vertices in the RDD. */
override def count(): Long = {
partitionsRDD.map(_.size).reduce(_ + _)
}
This causes Pregel to stop iterating when the number of messages is "negative",
giving incorrect results.
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