Kafka Connect FileConfigProvider 密码屏蔽不提供所有属性

Question

我想使用 FileConfigProvider 将数据库密码存储在单独的文件中。有趣的是文件中没有提供最后一个属性。我有连接器配置：

{
  "name": "test-conn",
  "config": {
    "name": "test-conn",
    "connector.class": "io.confluent.connect.jdbc.JdbcSourceConnector",
    "connection.url": "${file:/opt/secret/connect-secrets.properties:kafka_connect-url}",
    "connection.user": "${file:/opt/secret/connect-secrets.properties:kafka_connect-username}",
    "connection.password": "${file:/opt/secret/connect-secrets.properties:kafka_connect-password}",
    "table.types": "TABLE,VIEW",
    ...
  }
}

连接器已创建，但是由于与密码验证失败（错误密码）相关的异常，状态为 FAILED。有趣的是 REST 调用的响应：

{
  "name": "test-conn",
  "config": {
    "name": "test-conn",
    "connector.class": "io.confluent.connect.jdbc.JdbcSourceConnector",
    "connection.url": "${file:/opt/secret/connect-secrets.properties:kafka_connect-url}",
    "connection.user": "${file:/opt/secret/connect-secrets.properties:kafka_connect-username}",
    "connection.password": "file:/opt/secret/connect-secrets.properties:kafka_connect-password",
    "table.types": "TABLE,VIEW",
    ...
  }
  "tasks": []
  ...
}

请注意 JSON 响应的 connection.password 属性。 如果我添加新的配置属性，例如：

"foo": "${}"

，成功提供密码，响应包括：

"foo": "${}"

我面临一些错误吗？我从 confluent-community-2.13 Ubuntu 包安装了 Apache Kafka 7.3.2。

谢谢。