[SPARK-21217] Support ColumnVector.Array.to<type>Array()

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 2.3.0
• Component/s: SQL
• Assignee: Kazuaki Ishizaki
• Reporter: Kazuaki Ishizaki
• Created: 26/Jun/17 18:58
• Updated: 07/Jul/17 05:10
• Resolved: 07/Jul/17 05:10

Description

When to<type>Array() in ColumnVector.Array (e.g. toIntArray()) is called, the generic method in ArrayData is called. It is not fast since element-wise copy is performed.
This JIRA entry implements bulk-copy for these methods in ColumnVector.Array by using System.arrayCopy() or Platform.copyMemory().

Issue Links

• links to: [Github] Pull Request #18425 (kiszk)