scampi commented on a change in pull request #6402: URL: https://github.com/apache/arrow/pull/6402#discussion_r422419677
########## File path: java/vector/src/main/java/org/apache/arrow/vector/BaseVariableWidthVector.java ########## @@ -740,10 +740,16 @@ private void splitAndTransferOffsetBuffer(int startIndex, int length, BaseVariab final int start = offsetBuffer.getInt(startIndex * OFFSET_WIDTH); final int end = offsetBuffer.getInt((startIndex + length) * OFFSET_WIDTH); final int dataLength = end - start; - target.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH); - for (int i = 0; i < length + 1; i++) { - final int relativeSourceOffset = offsetBuffer.getInt((startIndex + i) * OFFSET_WIDTH) - start; - target.offsetBuffer.setInt(i * OFFSET_WIDTH, relativeSourceOffset); + + if (startIndex == 0) { + target.offsetBuffer = offsetBuffer.slice(0, (1 + length) * OFFSET_WIDTH); + target.offsetBuffer.getReferenceManager().retain(); Review comment: > We should also verify that reference management and accounting is intact after this change @siddharthteotia I have added a test but this is not checked. Do you have some pointers on how I can check this? > do you want to transfer the buffer here as well? @emkornfield What do you mean? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org