[ARROW-875] Nullable variable length vector fillEmpties() fills an extra value

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.3.0
• Component/s: Java
• External issue URL: https://github.com/apache/arrow/issues/16481
• Assignee: Steven Phillips
• Reporter: Steven Phillips
• Created: 21/Apr/17 22:50
• Updated: 11/Jan/23 07:11
• Resolved: 22/Apr/17 19:07

Description

The fillEmpties() method is needed to update the offset vector in between non-null values. But it fills the current value which we are trying to set as well, when this is unnecessary. In fact, in the case of setValueCount(), this can result in an unnecessary reAlloc() call.