feat(iceberg): bump iceberg-rust to v0.8.0 and add write support

.github/actions/test_sqllogic_iceberg_tpch/action.yml

@@ -16,6 +16,9 @@ runs:
       with:
         artifacts: sqllogictests,meta,query
 
+    - name: Setup uv
+      uses: astral-sh/setup-uv@v7
+
     - name: Iceberg Setup for (ubuntu-latest only)
       shell: bash
       run: |
@@ -29,11 +32,12 @@ runs:
         fi
         tar -zxf ${data_dir}/tpch.tar.gz -C $data_dir
 
-        uv sync
+        cwd=$(pwd)
+        cd tests/sqllogictests/scripts/ && uv sync && cd $cwd
         echo "Running prepare_iceberg_tpch_data.py..."
-        uv run python tests/sqllogictests/scripts/prepare_iceberg_tpch_data.py
+        uv run tests/sqllogictests/scripts/prepare_iceberg_tpch_data.py
         echo "Running prepare_iceberg_test_data.py..."
-        uv run python tests/sqllogictests/scripts/prepare_iceberg_test_data.py
+        uv run tests/sqllogictests/scripts/prepare_iceberg_test_data.py
 
 
     - name: Run sqllogic Tests with Standalone lib

.github/workflows/reuse.sqllogic.yml

@@ -228,30 +228,29 @@ jobs:
         with:
           name: test-sqllogic-cluster-minio-${{ matrix.dirs }}-${{ matrix.handler }}
 
-  # TODO: tmp disable since iceberg image not running on arm64
-  # standalone_iceberg_tpch:
-  #   runs-on:
-  #     - self-hosted
-  #     - ${{ inputs.runner_arch }}
-  #     - Linux
-  #     - 4c
-  #     - "${{ inputs.runner_provider }}"
-  #   steps:
-  #     - uses: actions/checkout@v4
-  #     - uses: actions/setup-java@v4
-  #       with:
-  #         distribution: "temurin"
-  #         java-version: "17"
-  #     - uses: ./.github/actions/test_sqllogic_iceberg_tpch
-  #       timeout-minutes: 15
-  #       with:
-  #         dirs: tpch_iceberg
-  #         handlers: http,hybrid
-  #     - name: Upload failure
-  #       if: failure()
-  #       uses: ./.github/actions/artifact_failure
-  #       with:
-  #         name: test-sqllogic-standalone-iceberg-tpch
+  standalone_iceberg_tpch:
+    runs-on:
+      - self-hosted
+      - ${{ inputs.runner_arch }}
+      - Linux
+      - 4c
+      - "${{ inputs.runner_provider }}"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          distribution: "temurin"
+          java-version: "17"
+      - uses: ./.github/actions/test_sqllogic_iceberg_tpch
+        timeout-minutes: 15
+        with:
+          dirs: tpch_iceberg
+          handlers: http,hybrid
+      - name: Upload failure
+        if: failure()
+        uses: ./.github/actions/artifact_failure
+        with:
+          name: test-sqllogic-standalone-iceberg-tpch
 
   cluster:
     runs-on:

AGENTS.md

@@ -0,0 +1,20 @@
+# Repository Guidelines
+
+## Project Structure & Module Organization
+Databend is a Rust workspace rooted at `Cargo.toml`. The query engine (`src/query/`), meta service (`src/meta/`), and shared crates (`src/common/`) compile into binaries stored under `src/binaries/`. Tests live in `tests/` with SQL suites (`suites/`), sqllogic cases, and meta-specific harnesses, while performance experiments sit in `benchmark/`. Tooling and deployment helpers are collected in `scripts/` and `docker/`, fixtures in `_data/`, and the `Makefile` lists every supported task.
+
+## Build, Test, and Development Commands
+- `make setup` – install cargo components plus linters (taplo, shfmt, typos, machete, ruff).
+- `make build` / `make build-release` – compile debug or optimized `databend-{query,meta,metactl}` into `target/`.
+- `make run-debug` / `make kill` – launch or stop a local standalone deployment using the latest build.
+- `make unit-test`, `make stateless-test`, `make sqllogic-test`, `make metactl-test` – run focused suites; `make test` expands to the default CI matrix.
+- `make fmt` and `make lint` – enforce formatting and clippy checks before committing.
+
+## Coding Style & Naming Conventions
+Rust sources follow `rustfmt.toml` (4-space indent, 100-column width) and must pass `cargo clippy -- -D warnings`. Keep modules and files in `snake_case`, exposed types and traits in `CamelCase`, and SQL suite files prefixed with the numeric order already in `tests/suites/`. Favor `common/exception` helpers plus `tracing` spans for errors and observability. Python utilities in `tests/` should satisfy Ruff defaults, and shell scripts must round-trip through `shfmt -l -w`.
+
+## Testing Guidelines
+Unit tests stay close to the affected crate (`#[cfg(test)]` modules), and integration behavior belongs in the relevant SQL suites or meta harness (`tests/metactl`, `tests/meta-kvapi`). Every planner, executor, or storage change should add at least one regression SQL file plus expected output when deterministic. Use cluster variants (`make stateless-cluster-test` and TLS mode) whenever coordination, transactions, or auth are involved. Document new fixtures or configs in `tests/README.md` (or inline comments) so CI remains reproducible.
+
+## Commit & Pull Request Guidelines
+History follows a Conventional-style subject such as `fix(storage): avoid stale snapshot (#19174)` or `feat: support self join elimination (#19169)`; keep the first line imperative and under 72 characters. Commits should stay scoped to a logical change set and include formatting/linting updates in the same patch. PRs must outline motivation, implementation notes, and validation commands, plus link issues or RFCs, and the final description should follow `PULL_REQUEST_TEMPLATE.md` (checkboxes, verification, screenshots when needed). Attach screenshots or sample queries when UI, SQL plans, or system tables change, and call out rollout risks (migrations, config toggles, backfills) so reviewers can plan accordingly.