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https://issues.apache.org/jira/browse/SPARK-2049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14026193#comment-14026193
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egraldlo commented on SPARK-2049:
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https://github.com/apache/spark/pull/902 resolved it.
> avg function in aggregation may cause overflow
> -----------------------------------------------
>
> Key: SPARK-2049
> URL: https://issues.apache.org/jira/browse/SPARK-2049
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.0.0
> Reporter: egraldlo
>
> https://github.com/apache/spark/pull/978
> Avg of 2147483644 and 2147483646, this will cause overflow in the current
> implementation. Maybe this is a problem.
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