[SPARK-7390] CovarianceCounter in StatFunctions might calculate incorrect result

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.0
• Component/s: SQL
• Assignee: L. C. Hsieh
• Reporter: L. C. Hsieh
• Created: 06/May/15 03:09
• Updated: 08/May/15 21:42
• Resolved: 08/May/15 21:41

Description

CovarianceCounter in StatFunctions has a merging stage. In this merge function, the other CovarianceCounter object sometimes has zero count that causes the final CovarianceCounter with incorrect result.

Issue Links

• links to: [Github] Pull Request #5931 (viirya)