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From "Khaled Ammar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-10945) GraphX computes Pagerank with NaN (with some datasets)
Date Tue, 06 Oct 2015 14:43:27 GMT

    [ https://issues.apache.org/jira/browse/SPARK-10945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14945127#comment-14945127
] 

Khaled Ammar commented on SPARK-10945:
--------------------------------------

Actually, I am not sure. I did not know this is a condition for a dataset.

I will double check, and potentially sort the dataset and get back to you.

Thanks,
-K

> 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
>              Labels: test
>
> 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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