[SPARK-42803] Use getParameterCount function instead of getParameterTypes.length

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.3.3
• Fix Version/s: 3.5.0
• Component/s: ML, Spark Core, SQL
• Assignee: Narek Karapetian
• Reporter: Narek Karapetian
• Created: 15/Mar/23 07:12
• Updated: 18/Mar/23 02:47
• Resolved: 18/Mar/23 02:47

Description

Since jdk1.8 there is an additional function in reflection API getParameterCount, it is better to use that function instead of getParameterTypes.length because getParameterTypes function makes a copy of the parameter types array every invocation.

This will help to avoid redundant arrays creation.

Issue Links

• links to: [Github] Pull Request #40422 (NarekDW)