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https://issues.apache.org/jira/browse/SPARK-21053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16045858#comment-16045858
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Kazuaki Ishizaki commented on SPARK-21053:
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Can you post a program that can reproduce this issue?
> Number overflow on agg function of Dataframe
> --------------------------------------------
>
> Key: SPARK-21053
> URL: https://issues.apache.org/jira/browse/SPARK-21053
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.0
> Environment: Databricks Community version
> Reporter: DUC LIEM NGUYEN
> Labels: features
>
> The use of average on aggregation function on a large data set return a NaN
> instead of the desired numerical value although it's range between 0 and 1.
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