Fang Yonghao created ORC-2164:
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             Summary: Add external-buffer support in DataBuffer lifecycle 
management
                 Key: ORC-2164
                 URL: https://issues.apache.org/jira/browse/ORC-2164
             Project: ORC
          Issue Type: Improvement
            Reporter: Fang Yonghao


To safely integrate with external prebuffer cache scenarios where memory is 
managed outside ORC, avoiding unnecessary reallocations and preventing 
ownership/lifecycle mismatches. Introduce the non-owning buffer support to 
DataBuffer so it can attach externally managed memory (via setData) without 
taking ownership of allocation/free.



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