如何解决影响者主机所需的“最大基数估算值”，但未提供”用于基巴纳的机器学习工作

Question

我目前正在设置一项机器学习工作，以检测到主机名的罕见事件。但是，我在作业的验证页面上遇到以下错误：

Job Validation Error

[Bucket max] cardinality estimate required for [influencers] [host.name] but not supplied

See the full error

这是完整的错误：

{
  "statusCode": 400,
  "error": "Bad Request",
  "message": "[illegal_argument_exception: [illegal_argument_exception] Reason: [Bucket max] cardinality estimate required for [influencers] [host.name] but not supplied]: [Bucket max] cardinality estimate required for [influencers] [host.name] but not supplied",
  "attributes": {
    "body": {
      "error": {
        "root_cause": [
          {
            "type": "illegal_argument_exception",
            "reason": "[Bucket max] cardinality estimate required for [influencers] [host.name] but not supplied"
          }
        ],
        "type": "illegal_argument_exception",
        "reason": "[Bucket max] cardinality estimate required for [influencers] [host.name] but not supplied"
      },
      "status": 400
    }
  }
}

是什么原因导致此错误？如何减轻它？ 感谢提前的帮助！