ding commented on SPARK-5484:

Thank you for your kindly reminder. However as the code is almost ready, I will 
still send PR in case someone has interest to review it.

> Pregel should checkpoint periodically to avoid StackOverflowError
> -----------------------------------------------------------------
>                 Key: SPARK-5484
>                 URL: https://issues.apache.org/jira/browse/SPARK-5484
>             Project: Spark
>          Issue Type: Bug
>          Components: GraphX
>            Reporter: Ankur Dave
>            Assignee: Ankur Dave
> Pregel-based iterative algorithms with more than ~50 iterations begin to slow 
> down and eventually fail with a StackOverflowError due to Spark's lack of 
> support for long lineage chains. Instead, Pregel should checkpoint the graph 
> periodically.

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