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Posted to issues@arrow.apache.org by "Paul Horn (Jira)" <ji...@apache.org> on 2022/04/27 14:04:00 UTC
[jira] [Created] (ARROW-16377) ListVector#getBuffers returns buffers in the wrong order for usage of VectorLoader
Paul Horn created ARROW-16377:
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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.
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