kevinjqliu opened a new pull request, #16214:
URL: https://github.com/apache/iceberg/pull/16214
## Changes
- **Reduce shadow JAR from 201MB to 58MB** by excluding cloud-specific thin
modules
(iceberg-aws, iceberg-gcp, iceberg-azure, iceberg-bigquery) and JUnit
dependencies
from the shadow JAR.
- **Load cloud bundles as separate JARs** via classpath (`-cp` instead of
`-jar`) so
they can be included/excluded independently.
- **Fix `REST_PORT` env var** — renamed to `CATALOG_REST_PORT` so the server
actually
reads it through the `CATALOG_*` environment mapping.
- **Update CI workflow** to build cloud bundle shadow JARs alongside the
open-api JAR.
## Motivation
The shadow JAR previously bundled all cloud provider SDKs (AWS, GCP, Azure)
directly,
making it unnecessarily large. Cloud bundles are already published as
standalone JARs and
can be loaded at runtime via the classpath, matching how they're consumed in
Spark/Flink.
## Testing
- Built shadow JAR and verified size reduction (201MB → 58MB)
- Ran standalone JAR with `CATALOG_REST_PORT=8183` — server starts, serves
`/v1/config`,
creates/lists namespaces
- Built and ran Docker image — healthcheck passes, full REST API functional
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