[GitHub] [spark] f422661 opened a new pull request #24608: fixed pagerank.py error result.

[GitBox <gi...@apache.org>]

f422661 opened a new pull request #24608: fixed  pagerank.py error result.
URL: https://github.com/apache/spark/pull/24608
 
 
   fixed the error result of pagerank.
   The pagerank formulation is "rank * 0.85 + (1/number of vals) * 0.15"
   
   ## What changes were proposed in this pull request?
   1. add  "num_vals = ranks.count()"
   2. modify : ranks = contribs.reduceByKey(add).mapValues(lambda rank: rank * 0.85 + (1/num_vals) * 0.15)
   (Please fill in changes proposed in this fix)
   
   ## How was this patch tested?
   
   (Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)
   (If this patch involves UI changes, please attach a screenshot; otherwise, remove this)
   
   Please review http://spark.apache.org/contributing.html before opening a pull request.
   

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