[ARROW-13981] [Java] VectorSchemaRootAppender doesn't work for BitVector

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 4.0.0
• Fix Version/s: 7.0.0
• Component/s: Java
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/29582
• Assignee: Liya Fan
• Reporter: ZHUO ZHANG
• Created: 13/Sep/21 05:49
• Updated: 11/Jan/23 08:36
• Resolved: 23/Oct/21 14:42

Description

Looks like the buffer copy logic doesn't work for BitVector, even though the BitVector is from BaseFixedWidthVector. I created two VectorSchemaRoot (target empty), calling 

VectorSchemaRootAppender.append(target, source);

then reading from the target didn't give me correct result.

 

Hope to get confirmation from experts that this is a problem in Apache Arrow, if yes, wondering if there is a workaround (tried using copyFromSafe as well and it doesn't work either)

Issue Links

• links to: GitHub Pull Request #11317