Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Docs: Add missing types to the spec v3 summary #12219

Merged
merged 2 commits into from
Feb 11, 2025
Merged

Docs: Add missing types to the spec v3 summary #12219

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
3db5867
Docs: Add missing types to the spec v3 summary
wgtmac Feb 11, 2025
684f32b
add another line
wgtmac Feb 11, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 2 additions & 2 deletions format/spec.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ In addition to row-level deletes, version 2 makes some requirements stricter for

Version 3 of the Iceberg spec extends data types and existing metadata structures to add new capabilities:

* New data types: nanosecond timestamp(tz), unknown
* New data types: nanosecond timestamp(tz), unknown, variant, geometry, geography
* Default value support for columns
* Multi-argument transforms for partitioning and sorting
* Row Lineage tracking
Expand Down Expand Up @@ -1599,7 +1599,7 @@ Default values are added to struct fields in v3.
* The `write-default` is a forward-compatible change because it is only used at write time. Old writers will fail because the field is missing.
* Tables with `initial-default` will be read correctly by older readers if `initial-default` is always null for optional fields. Otherwise, old readers will default optional columns with null. Old readers will fail to read required fields which are populated by `initial-default` because that default is not supported.

Types `variant`, `unknown`, `timestamp_ns`, and `timestamptz_ns` are added in v3.
Types `variant`, `geometry`, `geography`, `unknown`, `timestamp_ns`, and `timestamptz_ns` are added in v3.

All readers are required to read tables with unknown partition transforms, ignoring the unsupported partition fields when filtering.

Expand Down