题目内容
（请给出正确答案）
[单选题]
kafka-clustermirroring工具可以实现（)功能。
A.每条消息在文件中的位置称为offset(偏移量)
B.消费者通过(offset.partition.topic)跟踪记录
C.唯一标记一条消息
D.Offset是一个String型字符串
提问人：网友陈银桑
发布时间：2022-01-07
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B.Kafka单集群内数据备份
C.Kafka单集群内数据恢复
D.以上全不正确
题目内容
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