Doris

概览

Doris Load 节点支持将数据写入 Doris 数据库。 本文档介绍如何设置 Doris Load 节点以对 Doris 数据库运行 SQL 查询。

支持的版本

依赖

为了设置 Doris Load 节点, 下面提供了使用构建自动化工具（例如 Maven 或 SBT）所需要的依赖信息。

Maven 依赖

<dependency>
    <groupId>org.apache.inlong</groupId>
    <artifactId>sort-connector-doris</artifactId>
    <version>1.3.0-SNAPSHOT</version>
</dependency>

准备

创建 MySql Extract 表

在 MySql 数据库中创建表 cdc_mysql_source, 命令如下:

[root@fe001 ~]# mysql -u root -h localhost -P 3306 -p123456
mysql> use test;
Database changed
mysql> CREATE TABLE `cdc_mysql_source` (
       `id` int(11) NOT NULL AUTO_INCREMENT,
       `name` varchar(64) DEFAULT NULL,
       `dr` tinyint(3) DEFAULT 0,
       PRIMARY KEY (`id`)
       );
Query OK, 0 rows affected (0.02 sec)
mysql> insert into cdc_mysql_source values(1, 'zhangsan', 0),(2, 'lisi', 0),(3, 'wangwu', 0);
Query OK, 3 rows affected (0.01 sec)
Records: 3  Duplicates: 0  Warnings: 0
mysql> select * from cdc_mysql_source;
+----+----------+----+
| id | name     | dr |
+----+----------+----+
|  1 | zhangsan |  0 |
|  2 | lisi     |  0 |
|  3 | wangwu   |  0 |
+----+----------+----+
3 rows in set (0.07 sec)

创建 Doris Load 表

在 Doris 数据库中创建表 cdc_doris_sink, 命令如下:

[root@fe001 ~]# mysql -u root -h localhost -P 9030 -p000000
mysql> use test;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> CREATE TABLE `cdc_doris_sink` (
       `id` int(11) NOT NULL COMMENT "用户id",
       `name` varchar(50) NOT NULL COMMENT "昵称",
       `dr` tinyint(4) NULL COMMENT "逻辑删除"
       ) ENGINE=OLAP
       UNIQUE KEY(`id`)
       COMMENT "OLAP"
       DISTRIBUTED BY HASH(`id`) BUCKETS 1
       PROPERTIES (
       "replication_allocation" = "tag.location.default: 1"
       );
Query OK, 0 rows affected (0.06 sec)

如何创建 Doris Load 节点

SQL API 用法

[root@tasknode001 flink-1.13.5]# ./bin/sql-client.sh -l ./opt/connectors/mysql-cdc-inlong/ -l ./opt/connectors/doris/
Flink SQL> SET 'execution.checkpointing.interval' = '3s';
[INFO] Session property has been set.
Flink SQL> SET 'table.dynamic-table-options.enabled' = 'true';
[INFO] Session property has been set.
Flink SQL> CREATE TABLE cdc_mysql_source (
    >   id int
    >   ,name VARCHAR
    >   ,dr TINYINT
    >   ,PRIMARY KEY (id) NOT ENFORCED
    > ) WITH (
    >  'connector' = 'mysql-cdc-inlong',
    >  'hostname' = 'localhost',
    >  'port' = '3306',
    >  'username' = 'root',
    >  'password' = '123456',
    >  'database-name' = 'test',
    >  'table-name' = 'cdc_mysql_source'
    > );
[INFO] Execute statement succeed.
Flink SQL> CREATE TABLE cdc_doris_sink (
    > id INT,
    > name STRING,
    > dr TINYINT
    > ) WITH (
    >  'connector' = 'doris',
    >  'fenodes' = 'localhost:8030',
    >  'table.identifier' = 'test.cdc_doris_sink',
    >  'username' = 'root',
    >  'password' = '000000',
    >  'sink.properties.format' = 'json',
    >  'sink.properties.strip_outer_array' = 'true',
    >  'sink.enable-delete' = 'true'
    > );
[INFO] Execute statement succeed.
-- 支持删除事件同步(sink.enable-delete='true'), 需要 Doris 表开启批量删除功能
Flink SQL> insert into cdc_doris_sink select * from cdc_mysql_source /*+ OPTIONS('server-id'='5402') */;
[INFO] Submitting SQL update statement to the cluster...
[INFO] SQL update statement has been successfully submitted to the cluster:
Job ID: 5f89691571d7b3f3ca446589e3d0c3d3

InLong Dashboard 用法

TODO: 将在未来支持此功能。

InLong Manager Client 用法

TODO: 将在未来支持此功能。

Doris Load 节点参数

数据类型映射

请参阅 flink-doris-connector 页面以获取更多细节。