feat: Add Geometry & Geography Types #2859
Open
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Implement support for Iceberg v3 geospatial types as specified in the
Iceberg specification:
- Add GeometryType(crs) and GeographyType(crs, algorithm) to types.py
- Default CRS is "OGC:CRS84", default algorithm is "spherical"
- Types require format version 3 (minimum_format_version() returns 3)
- Values are stored as WKB (Well-Known Binary) bytes at runtime
- Avro schema conversion maps to "bytes"
- PyArrow conversion maps to large_binary()
- Add type string parsing for geometry('CRS') and geography('CRS', 'algo')
- Add visitor pattern support in schema.py and resolver.py
Note: JSON single-value encoding (WKB<->WKT) raises NotImplementedError
as it requires external libraries (e.g., Shapely) which are not included
to avoid heavy dependencies.
SaymV
changed the title
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Closes #1820
Rationale for this change
Apache Iceberg v3 introduces native
geometryandgeographyprimitive types.This PR adds spec-compliant support for those types in PyIceberg, including:
A full design and scope discussion is available in the accompanying RFC:
📄 RFC: Iceberg v3 Geospatial Primitive Types
The RFC documents scope, non-goals, compatibility constraints, and known limitations.
Are these changes tested?
Yes.
__str__/__repr__round-trippingAre there any user-facing changes?
Yes.
geometryandgeographycolumns in Iceberg v3 schemas