更新 BI 预留

更新现有 BI 预留的大小。BigQuery BI Engine 使用 BI 预留来运行高速内存中分析。

代码示例

Node.js

试用此示例之前，请按照 BigQuery 快速入门：使用客户端库中的 Node.js 设置说明进行操作。 如需了解详情，请参阅 BigQuery Node.js API 参考文档。

如需向 BigQuery 进行身份验证，请设置应用默认凭证。如需了解详情，请参阅为客户端库设置身份验证。

const {ReservationServiceClient} =
  require('@google-cloud/bigquery-reservation').v1;
const {status} = require('@grpc/grpc-js');

const client = new ReservationServiceClient();

/**
 * Updates a BI reservation.
 * A singleton BI reservation always exists with a default size of 0. To reserve
 * BI capacity, you must update the reservation to an amount greater than 0. To
 * release BI capacity, set the reservation size to 0.
 *
 * @param {string} projectId Google Cloud Project ID, for example 'example-project-id'
 * @param {string} location Google Cloud Location, for example 'US'
 */
async function updateBiReservation(projectId, location = 'US') {
  const biReservation = {
    name: client.biReservationPath(projectId, location),
    // Set the reservation size in bytes. This example sets it to 2 GiB.
    size: 2 * 1024 * 1024 * 1024,
  };
  const updateMask = {
    paths: ['size'],
  };

  const request = {
    biReservation,
    updateMask,
  };

  try {
    const [updatedReservation] = await client.updateBiReservation(request);
    console.log(`Updated BI reservation: ${updatedReservation.name}`);
    console.log(`  Size: ${updatedReservation.size} bytes`);
  } catch (err) {
    if (err.code === status.NOT_FOUND) {
      console.log(
        `BI Reservation not found for project ${projectId} in location ${location}.`,
      );
    } else {
      console.error('Error updating BI reservation:', err);
    }
  }
}

Python

试用此示例之前，请按照 BigQuery 快速入门：使用客户端库中的 Python 设置说明进行操作。 如需了解详情，请参阅 BigQuery Python API 参考文档。

如需向 BigQuery 进行身份验证，请设置应用默认凭证。如需了解详情，请参阅为客户端库设置身份验证。

from google.api_core import exceptions
from google.cloud import bigquery_reservation_v1
from google.protobuf import field_mask_pb2

client = bigquery_reservation_v1.ReservationServiceClient()


def update_bi_reservation(project_id: str, location: str):
    """Updates a BI reservation.

    A singleton BI reservation always exists with default size 0.
    To reserve BI capacity, update the reservation to an amount
    greater than 0. To release BI capacity, set the reservation size to 0.

    Args:
        project_id: The Google Cloud project ID.
        location: The geographic location of the BI reservation, for example, us-central1.
    """

    name = client.bi_reservation_path(project=project_id, location=location)
    bi_reservation = bigquery_reservation_v1.types.BiReservation()
    bi_reservation.name = name

    # The size of a BI reservation is measured in bytes. 2 GB is used here.
    bi_reservation.size = 2 * 10**9
    update_mask = field_mask_pb2.FieldMask(paths=["size"])

    try:
        response = client.update_bi_reservation(
            bi_reservation=bi_reservation, update_mask=update_mask
        )
        print(f"Updated BI reservation: {response.name}")
        print(f"New size is {response.size} bytes.")
    except exceptions.NotFound:
        print(
            f"BI reservation not found for project '{project_id}' in location '{location}'."
        )

后续步骤

如需搜索和过滤其他 Google Cloud 产品的代码示例，请参阅Google Cloud 示例浏览器。