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Posted to issues@spark.apache.org by "Khaled Ammar (JIRA)" <ji...@apache.org> on 2015/10/06 08:21:26 UTC

[jira] [Created] (SPARK-10945) GraphX computes Pagerank with NaN (with some datasets)

Khaled Ammar created SPARK-10945:
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             Summary: GraphX computes Pagerank with NaN (with some datasets)
                 Key: SPARK-10945
                 URL: https://issues.apache.org/jira/browse/SPARK-10945
             Project: Spark
          Issue Type: Bug
          Components: GraphX
    Affects Versions: 1.3.0
         Environment: Linux
            Reporter: Khaled Ammar


Hi,

I run GraphX in a medium size standalone Spark 1.3.0 installation. The pagerank typically works fine, except with one dataset (Twitter: http://law.di.unimi.it/webdata/twitter-2010). This is a public dataset that is commonly used in research papers.

I found that many vertices have an NaN values. This is true, even if the algorithm run for 1 iteration only.  

Thanks,
-Khaled



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