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[improvement](bitmap) Use shared_ptr in BitmapValue to avoid deep cop…
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…ying (apache#19101) (apache#21271)

Currently bitmapvalue type is copied between columns, it cost a lot of memory. Use a shared ptr in bitmap value to avoid copy data.
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@mrhhsg
mrhhsg authored and caiconghui1 committed Jul 18, 2023
1 parent 00c1eb8 commit c9b5192
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