Github user dding3 commented on a diff in the pull request:
https://github.com/apache/spark/pull/15125#discussion_r113021061
--- Diff: docs/graphx-programming-guide.md ---
@@ -709,7 +709,8 @@ messages remaining.
The following is the type signature of the [Pregel
operator][GraphOps.pregel] as well as a *sketch*
of its implementation (note: to avoid stackOverflowError due to long
lineage chains, pregel support periodcally
-checkpoint graph and messages by setting
"spark.graphx.pregel.checkpointInterval"):
+checkpoint graph and messages by setting
"spark.graphx.pregel.checkpointInterval" to a positive number,
+say 10. And set checkpoint directory as well using
SparkContext.setCheckpointDir(directory: String)):
--- End diff --
I reference the value in LDA and other ml algorithms in spark, by default
their checkpointInterval is set to 10.
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