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Mumbling: Add draft Mumbling Bitmap spec#16518

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rdblue:mumbling-spec
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Mumbling: Add draft Mumbling Bitmap spec#16518
rdblue wants to merge 1 commit into
apache:mainfrom
rdblue:mumbling-spec

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@rdblue rdblue commented May 21, 2026

This adds the spec for the proposed Mumbling Bitmap format for embedded deletion vectors in v4 root manifests.

Adding this spec does not make it part of the Iceberg table format or mean that it is adopted by the community. Like other parts of v4, we're adding specs as drafts that will be adopted when we are confident in the format and the reference implementation.

@github-actions github-actions Bot added the Specification Issues that may introduce spec changes. label May 21, 2026
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