[SPARK-13838] Clear variable code to prevent it to be re-evaluated in BoundAttribute

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: SQL
• Assignee: L. C. Hsieh
• Reporter: L. C. Hsieh
• Created: 13/Mar/16 00:04
• Updated: 19/Mar/16 14:57
• Resolved: 17/Mar/16 17:09

Description

We should also clear the variable code in BoundReference.genCode to prevent it to be evaluated twice, as we did in evaluateVariables.

Issue Links

• links to: [Github] Pull Request #11674 (viirya)