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https://issues.apache.org/jira/browse/SPARK-17877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15566385#comment-15566385
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Alexander Pivovarov commented on SPARK-17877:
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Another open issue with checkpointing is SPARK-14804
> Can not checkpoint connectedComponents resulting graph
> ------------------------------------------------------
>
> Key: SPARK-17877
> URL: https://issues.apache.org/jira/browse/SPARK-17877
> Project: Spark
> Issue Type: Bug
> Components: GraphX
> Affects Versions: 1.5.2, 1.6.2, 2.0.1
> Reporter: Alexander Pivovarov
> Priority: Minor
>
> The following code demonstrates the issue
> {code}
> import org.apache.spark.graphx._
> val users = sc.parallelize(List(3L -> "lucas", 7L -> "john", 5L -> "matt", 2L
> -> "kelly"))
> val rel = sc.parallelize(List(Edge(3L, 7L, "collab"), Edge(5L, 3L,
> "advisor"), Edge(2L, 5L, "colleague"), Edge(5L, 7L, "pi")))
> sc.setCheckpointDir("/tmp/check")
> val g = Graph(users, rel)
> g.checkpoint
> val gg = g.connectedComponents
> gg.checkpoint
> gg.vertices.collect
> gg.edges.collect
> gg.isCheckpointed // res5: Boolean = false
> {code}
> I think the last line should return true instead of false
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