Greg Hogan created FLINK-3806: --------------------------------- Summary: Revert use of DataSet.count() in Gelly Key: FLINK-3806 URL: https://issues.apache.org/jira/browse/FLINK-3806 Project: Flink Issue Type: Improvement Components: Gelly Affects Versions: 1.1.0 Reporter: Greg Hogan Priority: Critical
FLINK-1632 replaced {{GraphUtils.count}} with {{DataSetUtils.count}}. The former returns a {{DataSet}} while the latter executes a job to return a Java value. {{DataSetUtils.count}} is called from {{Graph.numberOfVertices}} and {{Graph.numberOfEdges}} which are called from {{GatherSumApplyIteration}} and {{ScatterGatherIteration}} as well as the {{PageRank}} algorithms when the user does not pass the number of vertices as a parameter. As noted in FLINK-1632, this does make the code simpler but if my understanding is correct will materialize the Graph twice. The Graph will need to be reread from input, regenerated, or recomputed by preceding algorithms. -- This message was sent by Atlassian JIRA (v6.3.4#6332)