请问一下 有人熟悉flinkx吗？我在同步sqlserver到kafka，启动项目没有办法拉取存量，只能拉取实时增量，要拉取存量（全量）怎么解决

请问一下 有人熟悉flinkx吗？我在同步sqlserver到kafka，启动项目没有办法拉取存量，只能拉取实时增量，要拉取存量（全量）怎么解决 `{ "job" : { "content" : [ { "reader" : { "parameter" : { "username" : "sa", "password" : "root1234", "url": "jdbc:sqlserver://172.xx.xxx.xxx:1433;DatabaseName=flink", "databaseName":"flink", "tableList": ["flink_test.sqlserverCDCTest"], "cat": "insert,update,delete" },

    "name" : "sqlservercdcreader"
  },
  "writer" : {
    "parameter": {
      "timezone": "UTC",
      "topic": "test061603",
      "producerSettings": {
        "bootstrap.servers" : "192.168.xxx.xxx:9092"
      },
      "tableFields": ["id","user_id","name"]
    },
    "name": "kafkawriter"
  }
}
],
"setting" : {
  "restore": {
    "isStream": true
  },
  "speed" : {
    "channel" : 1
  }
}

} }`