[I] [C++] Avoid duplicating value offsets buffer for 0-length array slices [arrow]

["rambleraptor (via GitHub)" <gi...@apache.org>]

rambleraptor opened a new issue, #51406:
URL: https://github.com/apache/arrow/issues/51406

   ### Describe the bug, including details regarding any error messages, version, and platform.
   
   When serializing a zero-length slice of a variable-length array that has a non-empty offsets buffer, the Arrow IPC writer previously retained the entire unsliced offsets buffer. For use cases which consumed ArrowRecordBatches in sub-batches, this caused unnecessary buffer amplification and sub-batch splitting.
   
   This was a change in behavior due to https://github.com/apache/arrow/pull/46408
   
   ### Component(s)
   
   C++


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Re: [I] [C++] Avoid duplicating value offsets buffer for 0-length array slices [arrow]

["pitrou (via GitHub)" <gi...@apache.org>]

pitrou commented on issue #51406:
URL: https://github.com/apache/arrow/issues/51406#issuecomment-5792161812

   Can you show an example exhibiting the problem?


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