Datax使用rdbmsreader支持clickhouse的读取

参考链接：(22条消息) 使用datax的rdbmsreader实现读取clickhouse_Sleten09的博客-CSDN博客

背景：想要把click house的数据源同步到HDFS，发现Datax没有clickhousereader组件。

1、把clickhousewriter/libs下的所有jar包复制到rdbmsreader/libs下,同名jar包直接替换，另外，删掉rm -f guava-r05.jar这个包，否则会报错

cp 自己的Datax安装目录/datax/plugin/writer/clickhousewriter/libs/* 自己的Datax安装目录/datax/plugin/reader/rdbmsreader/libs/

复制完， rdbmsreader/libs下的包如下：

 2、修改plugin.json文件：在"driver" 增加 "ru.yandex.clickhouse.ClickHouseDriver"

[root@*** plugin]# cat reader/rdbmsreader/plugin.json 
{
    "name": "rdbmsreader",
    "class": "com.alibaba.datax.plugin.reader.rdbmsreader.RdbmsReader",
    "description": "useScene: prod. mechanism: Jdbc connection using the database, execute select sql, retrieve data from the ResultSet. warn: The more you know about the database, the less problems you encounter.",
    "developer": "alibaba",
    "drivers":["dm.jdbc.driver.DmDriver", "com.sybase.jdbc3.jdbc.SybDriver", "com.edb.Driver", "ru.yandex.clickhouse.ClickHouseDriver"]
}

3、编辑json文件

{
  "job": {
    "content": [
      {
        "reader": {
          "parameter": {
            "password": "password",
            "column": [
              "id",
              "state",
              "time"
            ],
            "connection": [
              {
                "jdbcUrl": [
                  "jdbc:clickhouse://ip:port/default"
                ],
                "table": [
                  "table_name"
                ]
              }
            ],
            "username": "username"
          },
          "name": "rdbmsreader"
        },
          "writer": {
               "name": "streamwriter",
               "parameter": {
                    "print":true
                }
           }
        }
    ],
    "setting": {
      "errorLimit": {
        "record": 0,
        "percentage": 0.02
      },
      "speed": {
        "channel": 3
      }
    }
  }
}