Paul Horn created ARROW-16377:
---------------------------------
Summary: ListVector#getBuffers returns buffers in the wrong order
for usage of VectorLoader
Key: ARROW-16377
URL: https://issues.apache.org/jira/browse/ARROW-16377
Project: Apache Arrow
Issue Type: Bug
Components: Java
Reporter: Paul Horn
Calling
[getBuffers|https://github.com/apache/arrow/blob/06ca00c2daeeb0d6461e7b6bec51679c19b5b92b/java/vector/src/main/java/org/apache/arrow/vector/complex/ListVector.java#L652-L653]
on a ListVector adds the offsetBuffers first and the validityBuffer second.
When a ListVector is populated by
[loadFieldBuffers|https://github.com/apache/arrow/blob/06ca00c2daeeb0d6461e7b6bec51679c19b5b92b/java/vector/src/main/java/org/apache/arrow/vector/complex/ListVector.java#L183-L189]
(e.g. via a VectorLoader), the validityBuffer is read first and the
offsetBuffer is read second. The resulting vector represents different data
than the originating vector.
--
This message was sent by Atlassian Jira
(v8.20.7#820007)
