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https://issues.apache.org/jira/browse/SPARK-13145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15129810#comment-15129810
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Sean Owen commented on SPARK-13145:
-----------------------------------
Isn't this what ~== does?
The error shouldn't be relative to the expected value as it will be very
relatively different depending on what's being tested. Usually this is allowing
for rounding error which generally does not scale
> checkAnswer should tolerate small float number error
> ----------------------------------------------------
>
> Key: SPARK-13145
> URL: https://issues.apache.org/jira/browse/SPARK-13145
> Project: Spark
> Issue Type: Improvement
> Reporter: Davies Liu
>
> For example, we should the Float/Double as this:
> {code}
> abs(actual - expected) < expected * 1e-12
> {code}
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