[SPARK-13135] Don't print expressions recursively in generated code

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: SQL
• Target Version/s: 2.0.0
• Epic Link: Whole stage codegen
• Assignee: Dongjoon Hyun
• Reporter: Reynold Xin
• Created: 02/Feb/16 07:05
• Updated: 19/Oct/16 23:22
• Resolved: 24/May/16 17:12

Description

Our code generation currently prints expressions recursively. For example, for expression "(1 + 1) + 1)", we would print the following:

"(1 + 1) + 1)"
"(1 + 1)"
"1"
"1"

We should just print the project list once.

Issue Links

• links to: [Github] Pull Request #11019 (rxin)
• links to: [Github] Pull Request #13192 (dongjoon-hyun)