[SPARK-10325] Public Row no longer overrides hashCode / violates hashCode + equals contract

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.5.0
• Fix Version/s: 1.5.0
• Component/s: SQL
• Target Version/s: 1.5.0
• Assignee: Josh Rosen
• Reporter: Josh Rosen
• Created: 27/Aug/15 23:53
• Updated: 28/Aug/15 19:06
• Resolved: 28/Aug/15 19:06

Description

It appears that the public Row's hashCode is no longer overridden as of Spark 1.5.0:

val x = Row("Hello")
val y = Row("Hello")
println(x == y)
println(x.hashCode)
println(y.hashCode)

outputs

true
1032103993
1346393532

This violates the hashCode/equals contract.

I discovered this because it broke tests in the spark-avro library.

Issue Links

• links to: [Github] Pull Request #8500 (JoshRosen)