[SPARK-17266] PrefixComparatorsSuite's "String prefix comparator" failed when both input strings are empty strings

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.1.0
• Component/s: SQL, Tests
• Assignee: Yin Huai
• Reporter: Yin Huai
• Created: 26/Aug/16 23:02
• Updated: 27/Aug/16 02:39
• Resolved: 27/Aug/16 02:39

Description

https://amplab.cs.berkeley.edu/jenkins/job/spark-master-test-sbt-hadoop-2.4/1620/testReport/junit/org.apache.spark.util.collection.unsafe.sort/PrefixComparatorsSuite/String_prefix_comparator/

org.scalatest.exceptions.GeneratorDrivenPropertyCheckFailedException: TestFailedException was thrown during property evaluation.   Message: 0 equaled 0, but 1 did not equal 0, and 0 was not less than 0, and 0 was not greater than 0   Location: (PrefixComparatorsSuite.scala:42)   Occurred when passed generated values (     arg0 = "",     arg1 = ""   )

I could not reproduce it locally. But, let me add this case in the regressionTests to explicitly test it.

Issue Links

• links to: [Github] Pull Request #14837 (yhuai)