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feat: add Nimble to FileFormatType - #879

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zzhao0 wants to merge 1 commit into
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zzhao0:nimble-file-format
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feat: add Nimble to FileFormatType#879
zzhao0 wants to merge 1 commit into
apache:mainfrom
zzhao0:nimble-file-format

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@zzhao0

@zzhao0 zzhao0 commented Aug 7, 2026

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Working on integrating Nimble https://github.com/facebookincubator/nimble to iceberg. This requires extending the FileFormatType enum.

Add kNimble to the FileFormatType enum along with its ToString and FileFormatTypeFromString mappings, so tables whose data files are written in the Nimble columnar format can be represented and round-tripped through manifest and REST JSON deserialization.

Add `kNimble` to the `FileFormatType` enum along with its `ToString` and
`FileFormatTypeFromString` mappings, so tables whose data files are written
in the Nimble columnar format can be represented and round-tripped through
manifest and REST JSON deserialization.
@wgtmac

wgtmac commented Aug 8, 2026

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IMHO, we cannot make this change until nimble has been formally accepted by the Iceberg spec. It would be good to start a discussion on dev@iceberg.apache.org to see what's the requirement to add a new file format. Vortex is doing this: https://docs.google.com/document/d/1g0EJDr3DkSmfAce8C94zA2JyWRj2SeNeAeiYOotnSww

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