Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/14137#discussion_r70664836
--- Diff:
graphx/src/main/scala/org/apache/spark/graphx/lib/StronglyConnectedComponents.scala
---
@@ -106,6 +116,16 @@ object StronglyConnectedComponents {
}
},
(final1, final2) => final1 || final2)
+
+ // ensure sccGraph's rdd are marked as recently used
+ sccGraph.vertices.count()
+ sccGraph.edges.count()
+ // sccGraph materialized so, unpersist can be done on previous
+ if(prevSccGraph != sccGraph)
--- End diff --
I think this will fail style checks but let's see.
Hm, I think it's straightforward to follow the same pattern for the other
RDD, but yes it's updated in enough places that it's a fair bit of extra code.
It might be possible to refactor this nicely in some method.
Not essential, maybe. This code isn't used much anyway. A partial
improvement may be a sufficient win.
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