[SPARK-38271] PoissonSampler may output more rows than MaxRows

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.3, 3.1.2, 3.2.1, 3.3.0
• Fix Version/s: 3.3.0, 3.2.2
• Component/s: SQL
• Labels: correctness
• Assignee: Ruifeng Zheng Assign to me
• Reporter: Ruifeng Zheng
• Created: 21/Feb/22 08:03
• Updated: 17/Jul/22 05:38
• Resolved: 22/Feb/22 13:05

Description

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
 

Issue Links

• links to: [Github] Pull Request #35593 (zhengruifeng)
• links to: [Github] Pull Request #35593 (zhengruifeng)