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https://issues.apache.org/jira/browse/SPARK-15382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15436172#comment-15436172
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Apache Spark commented on SPARK-15382:
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User 'maropu' has created a pull request for this issue:
https://github.com/apache/spark/pull/14800
> monotonicallyIncreasingId doesn't work when data is upsampled
> -------------------------------------------------------------
>
> Key: SPARK-15382
> URL: https://issues.apache.org/jira/browse/SPARK-15382
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.6.1
> Reporter: Mateusz Buśkiewicz
> Fix For: 2.0.1, 2.1.0
>
>
> Assigned ids are not unique
> {code}
> from pyspark.sql import Row
> from pyspark.sql.functions import monotonicallyIncreasingId
> hiveContext.createDataFrame([Row(a=1), Row(a=2)]).sample(True,
> 10.0).withColumn('id', monotonicallyIncreasingId()).collect()
> {code}
> Output:
> {code}
> [Row(a=1, id=429496729600),
> Row(a=1, id=429496729600),
> Row(a=1, id=429496729600),
> Row(a=1, id=429496729600),
> Row(a=1, id=429496729600),
> Row(a=1, id=429496729600),
> Row(a=1, id=429496729600),
> Row(a=2, id=867583393792),
> Row(a=2, id=867583393792),
> Row(a=2, id=867583393792),
> Row(a=2, id=867583393792),
> Row(a=2, id=867583393792),
> Row(a=2, id=867583393792),
> Row(a=2, id=867583393792),
> Row(a=2, id=867583393792),
> Row(a=2, id=867583393792),
> Row(a=2, id=867583393792),
> Row(a=2, id=867583393792)]
> {code}
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