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https://issues.apache.org/jira/browse/SPARK-17496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15481270#comment-15481270
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Sean Owen commented on SPARK-17496:
-----------------------------------
I don't think that's a bug. The value is virtually always in (0,1), so being
able to specify 0 or 1 even is not typically useful.
> missing int to float coercion in df.sample() signature
> ------------------------------------------------------
>
> Key: SPARK-17496
> URL: https://issues.apache.org/jira/browse/SPARK-17496
> Project: Spark
> Issue Type: Bug
> Components: PySpark
> Affects Versions: 2.0.0
> Reporter: Max Moroz
> Priority: Trivial
>
> {code}
> # works
> spark.createDataFrame([[1], [2], [3]]).sample(True, 1.0)
> # doesn't work
> spark.createDataFrame([[1], [2], [3]]).sample(True, 1)
> {code}
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