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Posted to issues@spark.apache.org by "zhengruifeng (Jira)" <ji...@apache.org> on 2022/02/21 08:05:00 UTC
[jira] [Updated] (SPARK-38271) PoissonSampler may generate more rows than MaxRows
[ https://issues.apache.org/jira/browse/SPARK-38271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
zhengruifeng updated SPARK-38271:
---------------------------------
Description:
{code:java}
scala> val df = spark.range(0, 1000)
df: org.apache.spark.sql.Dataset[Long] = [id: bigint]
scala> df.count
res0: Long = 1000
scala> df.sample(true, 0.999999, 10).count
res1: Long = 1004
{code}
> PoissonSampler may generate more rows than MaxRows
> --------------------------------------------------
>
> Key: SPARK-38271
> URL: https://issues.apache.org/jira/browse/SPARK-38271
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: zhengruifeng
> Priority: Major
>
> {code:java}
> scala> val df = spark.range(0, 1000)
> df: org.apache.spark.sql.Dataset[Long] = [id: bigint]
> scala> df.count
> res0: Long = 1000
> scala> df.sample(true, 0.999999, 10).count
> res1: Long = 1004
> {code}
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