[ARROW-13645] [Java] Allow NullVectors to have distinct field names

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 6.0.0
• Component/s: Java
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/29283
• Assignee: Liya Fan
• Reporter: Liya Fan
• Created: 17/Aug/21 12:13
• Updated: 11/Jan/23 08:34
• Resolved: 26/Aug/21 02:36

Description

As discussed in the ML (https://lists.apache.org/thread.html/r19aad8a34f63334d3fcd627106f69be13f689740b83930a4eecc17b3%40%3Cdev.arrow.apache.org%3E), the current implementation use hard-coded field names. This may cause some problems, for example, when reconstruct a usable schema from a list of FieldVectors.

So we resolve this problem by allowing NullVectors to have distinct field names.

This also makes the NullVector consistent with other types of vectors.

Issue Links

• links to: GitHub Pull Request #10949