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[Feature][Doris] Support multi-table source read (apache#7895)
Co-authored-by: happyboy1024 <296442618@qq.com>
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# Doris | ||
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> Doris 源连接器 | ||
## 支持的引擎 | ||
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> Spark<br/> | ||
> Flink<br/> | ||
> SeaTunnel Zeta<br/> | ||
## 主要功能 | ||
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- [x] [批处理](../../concept/connector-v2-features.md) | ||
- [ ] [流处理](../../concept/connector-v2-features.md) | ||
- [ ] [精确一次](../../concept/connector-v2-features.md) | ||
- [x] [列投影](../../concept/connector-v2-features.md) | ||
- [x] [并行度](../../concept/connector-v2-features.md) | ||
- [x] [支持用户自定义分片](../../concept/connector-v2-features.md) | ||
- [x] [支持多表读](../../concept/connector-v2-features.md) | ||
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## 描述 | ||
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用于 Apache Doris 的源连接器。 | ||
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## 支持的数据源信息 | ||
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| 数据源 | 支持版本 | 驱动 | Url | Maven | | ||
|------------|--------------------------------------|--------|-----|-------| | ||
| Doris | 仅支持Doris2.0及以上版本. | - | - | - | | ||
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## 数据类型映射 | ||
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| Doris 数据类型 | SeaTunnel 数据类型 | | ||
|--------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------| | ||
| INT | INT | | ||
| TINYINT | TINYINT | | ||
| SMALLINT | SMALLINT | | ||
| BIGINT | BIGINT | | ||
| LARGEINT | STRING | | ||
| BOOLEAN | BOOLEAN | | ||
| DECIMAL | DECIMAL((Get the designated column's specified column size)+1,<br/>(Gets the designated column's number of digits to right of the decimal point.))) | | ||
| FLOAT | FLOAT | | ||
| DOUBLE | DOUBLE | | ||
| CHAR<br/>VARCHAR<br/>STRING<br/>TEXT | STRING | | ||
| DATE | DATE | | ||
| DATETIME<br/>DATETIME(p) | TIMESTAMP | | ||
| ARRAY | ARRAY | | ||
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## 源选项 | ||
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基础配置: | ||
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| 名称 | 类型 | 是否必须 | 默认值 | 描述 | | ||
|----------------------------------|--------|----------|------------|-----------------------------------------------------------------------------------------------------| | ||
| fenodes | string | yes | - | FE 地址, 格式:`"fe_host:fe_http_port"` | | ||
| username | string | yes | - | 用户名 | | ||
| password | string | yes | - | 密码 | | ||
| doris.request.retries | int | no | 3 | 请求Doris FE的重试次数 | | ||
| doris.request.read.timeout.ms | int | no | 30000 | | | ||
| doris.request.connect.timeout.ms | int | no | 30000 | | | ||
| query-port | string | no | 9030 | Doris查询端口 | | ||
| doris.request.query.timeout.s | int | no | 3600 | Doris扫描数据的超时时间,单位秒 | | ||
| table_list | string | 否 | - | 表清单 | | ||
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表清单配置: | ||
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| 名称 | 类型 | 是否必须 | 默认值 | 描述 | | ||
|----------------------------------|--------|----------|------------|-----------------------------------------------------------------------------------------------------| | ||
| database | string | yes | - | 数据库 | | ||
| table | string | yes | - | 表名 | | ||
| doris.read.field | string | no | - | 选择要读取的Doris表字段 | | ||
| doris.filter.query | string | no | - | 数据过滤. 格式:"字段 = 值", 例如:doris.filter.query = "F_ID > 2" | | ||
| doris.batch.size | int | no | 1024 | 每次能够从BE中读取到的最大行数 | | ||
| doris.exec.mem.limit | long | no | 2147483648 | 单个be扫描请求可以使用的最大内存。默认内存为2G(2147483648) | | ||
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注意: 当此配置对应于单个表时,您可以将table_list中的配置项展平到外层。 | ||
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### 提示 | ||
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> 不建议随意修改高级参数 | ||
## 例子 | ||
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### 单表 | ||
> 这是一个从doris读取数据后,输出到控制台的例子: | ||
``` | ||
env { | ||
parallelism = 2 | ||
job.mode = "BATCH" | ||
} | ||
source{ | ||
Doris { | ||
fenodes = "doris_e2e:8030" | ||
username = root | ||
password = "" | ||
database = "e2e_source" | ||
table = "doris_e2e_table" | ||
} | ||
} | ||
transform { | ||
# If you would like to get more information about how to configure seatunnel and see full list of transform plugins, | ||
# please go to https://seatunnel.apache.org/docs/transform/sql | ||
} | ||
sink { | ||
Console {} | ||
} | ||
``` | ||
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使用`doris.read.field`参数来选择需要读取的Doris表字段: | ||
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``` | ||
env { | ||
parallelism = 2 | ||
job.mode = "BATCH" | ||
} | ||
source{ | ||
Doris { | ||
fenodes = "doris_e2e:8030" | ||
username = root | ||
password = "" | ||
database = "e2e_source" | ||
table = "doris_e2e_table" | ||
doris.read.field = "F_ID,F_INT,F_BIGINT,F_TINYINT,F_SMALLINT" | ||
} | ||
} | ||
transform { | ||
# If you would like to get more information about how to configure seatunnel and see full list of transform plugins, | ||
# please go to https://seatunnel.apache.org/docs/transform/sql | ||
} | ||
sink { | ||
Console {} | ||
} | ||
``` | ||
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使用`doris.filter.query`来过滤数据,参数值将作为过滤条件直接传递到doris: | ||
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``` | ||
env { | ||
parallelism = 2 | ||
job.mode = "BATCH" | ||
} | ||
source{ | ||
Doris { | ||
fenodes = "doris_e2e:8030" | ||
username = root | ||
password = "" | ||
database = "e2e_source" | ||
table = "doris_e2e_table" | ||
doris.filter.query = "F_ID > 2" | ||
} | ||
} | ||
transform { | ||
# If you would like to get more information about how to configure seatunnel and see full list of transform plugins, | ||
# please go to https://seatunnel.apache.org/docs/transform/sql | ||
} | ||
sink { | ||
Console {} | ||
} | ||
``` | ||
### 多表 | ||
``` | ||
env{ | ||
parallelism = 1 | ||
job.mode = "BATCH" | ||
} | ||
source{ | ||
Doris { | ||
fenodes = "xxxx:8030" | ||
username = root | ||
password = "" | ||
table_list = [ | ||
{ | ||
database = "st_source_0" | ||
table = "doris_table_0" | ||
doris.read.field = "F_ID,F_INT,F_BIGINT,F_TINYINT" | ||
doris.filter.query = "F_ID >= 50" | ||
}, | ||
{ | ||
database = "st_source_1" | ||
table = "doris_table_1" | ||
} | ||
] | ||
} | ||
} | ||
transform {} | ||
sink{ | ||
Doris { | ||
fenodes = "xxxx:8030" | ||
schema_save_mode = "RECREATE_SCHEMA" | ||
username = root | ||
password = "" | ||
database = "st_sink" | ||
table = "${table_name}" | ||
sink.enable-2pc = "true" | ||
sink.label-prefix = "test_json" | ||
doris.config = { | ||
format="json" | ||
read_json_by_line="true" | ||
} | ||
} | ||
} | ||
``` |
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