Github user ankurdave commented on a diff in the pull request:
https://github.com/apache/spark/pull/3619#discussion_r21393556
--- Diff: graphx/src/main/scala/org/apache/spark/graphx/Pregel.scala ---
@@ -139,6 +146,14 @@ object Pregel extends Logging {
// get to send messages. We must cache messages so it can be
materialized on the next line,
// allowing us to uncache the previous iteration.
messages = g.mapReduceTriplets(sendMsg, mergeMsg, Some((newVerts,
activeDirection))).cache()
+
+ if (checkpoint && i % checkpointFrequency == checkpointFrequency -
1) {
+ logInfo("Checkpointing in iteration " + i)
+ g.vertices.checkpoint()
--- End diff --
We merged a simpler fix for graph checkpointing in
https://issues.apache.org/jira/browse/SPARK-4672. I think this fixes SPARK-3623
-- are the extra changes to Spark core in your PR necessary?
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