export 导出 s3 显示执行成功，但s3上没文件

[xiaoliang]

export 导出 s3 显示执行成功，但s3上没文件
EXPORT TABLE event_1_copy TO “s3://bucket/” WITH BROKER
(“aws.s3.access_key” = “xxx”,“aws.s3.secret_key” = “xxx”,“aws.s3.region” = “cn-shanghai”,“aws.s3.endpoint” = “xxx”);