andygrove opened a new pull request, #4144:
URL: https://github.com/apache/datafusion-comet/pull/4144
## Which issue does this PR close?
N/A.
## Rationale for this change
The "Major Initiatives" section of the contributor-guide roadmap had grown
stale: the
Iceberg integration listed there is now done and shipped, and Spark 4.0
support has
reached 4.0.2 with 4.1.1 already close behind. At the same time, several
large efforts
that the project is actively focused on were not represented at all (window
expressions, lambda expressions, TPC-H/TPC-DS performance, upstream work in
`datafusion-spark`, native Parquet writes).
## What changes are included in this PR?
- Remove the Iceberg Integration and Spark 4.0 Support sections.
- Add new sections covering:
- Window Expressions (links to #2705, #2721, #2841, #4007)
- Lambda Expressions (higher-order functions on arrays and maps)
- TPC-H and TPC-DS Performance (links to #2004, #858, #3799)
- Upstream Work in DataFusion (links to #2084)
- Native Parquet Writes (links to #1625)
- Keep the Dynamic Partition Pruning section as-is.
- Drop the now-completed "Moving more expressions to the `datafusion-spark`
crate"
bullet from Ongoing Improvements (it is promoted to a major initiative).
## How are these changes tested?
Documentation-only change. No tests required.
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