与 Lakekeeper 目录 的集成仅适用于 Iceberg 表。
此集成同时支持 AWS S3 和其他云存储提供商。
- 高性能且具备原生 Rust实现,兼顾性能与可靠性
- 符合 Iceberg REST 目录 规范的 REST API
- 与兼容 S3 存储的云存储集成
由于此功能仍处于 Experimental 阶段,你需要使用以下命令启用:
SET allow_experimental_database_iceberg = 1;本地开发环境设置
前置条件
- Docker and Docker Compose:确保已安装并运行 Docker
- 示例设置:你可以使用 Lakekeeper 的 docker-compose 配置
设置本地 Lakekeeper 目录
docker-compose.yml 的文件,内容如下:
version: '3.8'
services:
lakekeeper:
image: quay.io/lakekeeper/catalog:latest
environment:
- LAKEKEEPER__PG_ENCRYPTION_KEY=This-is-NOT-Secure!
- LAKEKEEPER__PG_DATABASE_URL_READ=postgresql://postgres:postgres@db:5432/postgres
- LAKEKEEPER__PG_DATABASE_URL_WRITE=postgresql://postgres:postgres@db:5432/postgres
- RUST_LOG=info
command: ["serve"]
healthcheck:
test: ["CMD", "/home/nonroot/lakekeeper", "healthcheck"]
interval: 1s
timeout: 10s
retries: 10
start_period: 30s
depends_on:
migrate:
condition: service_completed_successfully
db:
condition: service_healthy
minio:
condition: service_healthy
ports:
- 8181:8181
networks:
- iceberg_net
migrate:
image: quay.io/lakekeeper/catalog:latest-main
environment:
- LAKEKEEPER__PG_ENCRYPTION_KEY=This-is-NOT-Secure!
- LAKEKEEPER__PG_DATABASE_URL_READ=postgresql://postgres:postgres@db:5432/postgres
- LAKEKEEPER__PG_DATABASE_URL_WRITE=postgresql://postgres:postgres@db:5432/postgres
- RUST_LOG=info
restart: "no"
command: ["migrate"]
depends_on:
db:
condition: service_healthy
networks:
- iceberg_net
bootstrap:
image: curlimages/curl
depends_on:
lakekeeper:
condition: service_healthy
restart: "no"
command:
- -w
- "%{http_code}"
- "-X"
- "POST"
- "-v"
- "http://lakekeeper:8181/management/v1/bootstrap"
- "-H"
- "Content-Type: application/json"
- "--data"
- '{"accept-terms-of-use": true}'
- "-o"
- "/dev/null"
networks:
- iceberg_net
initialwarehouse:
image: curlimages/curl
depends_on:
lakekeeper:
condition: service_healthy
bootstrap:
condition: service_completed_successfully
restart: "no"
command:
- -w
- "%{http_code}"
- "-X"
- "POST"
- "-v"
- "http://lakekeeper:8181/management/v1/warehouse"
- "-H"
- "Content-Type: application/json"
- "--data"
- '{"warehouse-name": "demo", "project-id": "00000000-0000-0000-0000-000000000000", "storage-profile": {"type": "s3", "bucket": "warehouse-rest", "key-prefix": "", "assume-role-arn": null, "endpoint": "http://minio:9000", "region": "local-01", "path-style-access": true, "flavor": "minio", "sts-enabled": true}, "storage-credential": {"type": "s3", "credential-type": "access-key", "aws-access-key-id": "minio", "aws-secret-access-key": "ClickHouse_Minio_P@ssw0rd"}}'
- "-o"
- "/dev/null"
networks:
- iceberg_net
db:
image: bitnami/postgresql:16.3.0
environment:
- POSTGRESQL_USERNAME=postgres
- POSTGRESQL_PASSWORD=postgres
- POSTGRESQL_DATABASE=postgres
healthcheck:
test: ["CMD-SHELL", "pg_isready -U postgres -p 5432 -d postgres"]
interval: 2s
timeout: 10s
retries: 5
start_period: 10s
volumes:
- postgres_data:/bitnami/postgresql
networks:
- iceberg_net
minio:
image: bitnami/minio:2025.4.22
environment:
- MINIO_ROOT_USER=minio
- MINIO_ROOT_PASSWORD=ClickHouse_Minio_P@ssw0rd
- MINIO_API_PORT_NUMBER=9000
- MINIO_CONSOLE_PORT_NUMBER=9001
- MINIO_SCHEME=http
- MINIO_DEFAULT_BUCKETS=warehouse-rest
networks:
iceberg_net:
aliases:
- warehouse-rest.minio
ports:
- "9002:9000"
- "9003:9001"
healthcheck:
test: ["CMD", "mc", "ls", "local", "|", "grep", "warehouse-rest"]
interval: 2s
timeout: 10s
retries: 3
start_period: 15s
volumes:
- minio_data:/bitnami/minio/data
clickhouse:
image: clickhouse/clickhouse-server:head
container_name: lakekeeper-clickhouse
user: '0:0' # Ensures root permissions
ports:
- "8123:8123"
- "9000:9000"
volumes:
- clickhouse_data:/var/lib/clickhouse
- ./clickhouse/data_import:/var/lib/clickhouse/data_import # 挂载数据集文件夹
networks:
- iceberg_net
environment:
- CLICKHOUSE_DB=default
- CLICKHOUSE_USER=default
- CLICKHOUSE_DO_NOT_CHOWN=1
- CLICKHOUSE_PASSWORD=
depends_on:
lakekeeper:
condition: service_healthy
minio:
condition: service_healthy
volumes:
postgres_data:
minio_data:
clickhouse_data:
networks:
iceberg_net:
driver: bridge
docker compose up -d
docker-compose logs -f
Lakekeeper 设置要求先将样本数据加载到 Iceberg 表中。请确保环境中已创建这些表并填充数据,然后再尝试通过 ClickHouse 查询它们。表是否可用取决于具体的 docker-compose 设置以及样本数据加载脚本。
连接到本地 Lakekeeper 目录
docker exec -it lakekeeper-clickhouse clickhouse-client
SET allow_experimental_database_iceberg = 1;
CREATE DATABASE demo
ENGINE = DataLakeCatalog('http://lakekeeper:8181/catalog', 'minio', 'ClickHouse_Minio_P@ssw0rd')
SETTINGS catalog_type = 'rest', storage_endpoint = 'http://minio:9002/warehouse-rest', warehouse = 'demo'
使用 ClickHouse 查询 Lakekeeper 目录 中的表
USE demo;
SHOW TABLES;
┌─name──────────┐
│ default.taxis │
└───────────────┘
如果你没有看到任何表,通常说明:
- 环境尚未创建样本表
- Lakekeeper 目录 service 尚未完全初始化
- 样本数据加载过程尚未完成
docker-compose logs spark
SELECT count(*) FROM `default.taxis`;
┌─count()─┐
│ 2171187 │
└─────────┘
必须使用反引号由于 ClickHouse 不支持多个命名空间,因此必须使用反引号。
SHOW CREATE TABLE `default.taxis`;
┌─statement─────────────────────────────────────────────────────────────────────────────────────┐
│ CREATE TABLE demo.`default.taxis` │
│ ( │
│ `VendorID` Nullable(Int64), │
│ `tpep_pickup_datetime` Nullable(DateTime64(6)), │
│ `tpep_dropoff_datetime` Nullable(DateTime64(6)), │
│ `passenger_count` Nullable(Float64), │
│ `trip_distance` Nullable(Float64), │
│ `RatecodeID` Nullable(Float64), │
│ `store_and_fwd_flag` Nullable(String), │
│ `PULocationID` Nullable(Int64), │
│ `DOLocationID` Nullable(Int64), │
│ `payment_type` Nullable(Int64), │
│ `fare_amount` Nullable(Float64), │
│ `extra` Nullable(Float64), │
│ `mta_tax` Nullable(Float64), │
│ `tip_amount` Nullable(Float64), │
│ `tolls_amount` Nullable(Float64), │
│ `improvement_surcharge` Nullable(Float64), │
│ `total_amount` Nullable(Float64), │
│ `congestion_surcharge` Nullable(Float64), │
│ `airport_fee` Nullable(Float64) │
│ ) │
│ ENGINE = Iceberg('http://minio:9002/warehouse-rest/warehouse/default/taxis/', 'minio', '[HIDDEN]') │
└───────────────────────────────────────────────────────────────────────────────────────────────┘
将数据湖中的数据加载到 ClickHouse
CREATE TABLE taxis
(
`VendorID` Int64,
`tpep_pickup_datetime` DateTime64(6),
`tpep_dropoff_datetime` DateTime64(6),
`passenger_count` Float64,
`trip_distance` Float64,
`RatecodeID` Float64,
`store_and_fwd_flag` String,
`PULocationID` Int64,
`DOLocationID` Int64,
`payment_type` Int64,
`fare_amount` Float64,
`extra` Float64,
`mta_tax` Float64,
`tip_amount` Float64,
`tolls_amount` Float64,
`improvement_surcharge` Float64,
`total_amount` Float64,
`congestion_surcharge` Float64,
`airport_fee` Float64
)
ENGINE = MergeTree()
PARTITION BY toYYYYMM(tpep_pickup_datetime)
ORDER BY (VendorID, tpep_pickup_datetime, PULocationID, DOLocationID);
INSERT INTO SELECT 从 Lakekeeper 目录 表中导入数据:
INSERT INTO taxis
SELECT * FROM demo.`default.taxis`;