AFAIK作为数据流实例运行时，必须将文件写入GCS服务(也称为存储桶)，而不是本地磁盘.

AFAIK when it is ran as a dataflow instance, you have to write file to GCS service (aka storage bucket) rather than local disk.

您已经尝试过了吗?创建存储桶: https://cloud.google.com/storage/docs/creating -水桶

Did you try that already? to create storage bucket: https://cloud.google.com/storage/docs/creating-buckets