内容简介：测试环境使用的Kafka出现了点儿问题，服务器被停止，所有的topic日志不知怎的被清空。一番大清洗（清理zookeeper节点、kafka topic log）、重启Kafka、创建分区后发现报了如下的错误：日志中提到的high watermark指的是一个partition中上一次提交的消息的offset。报警是因为topic刚创建、消费已开始、但是还没有生产者推送消息过来、对应topic没有任何offset的记录导致的。
测试环境使用的Kafka出现了点儿问题，服务器被停止，所有的topic日志不知怎的被清空。一番大清洗（清理zookeeper节点、kafka topic log）、重启Kafka、创建分区后发现报了如下的错误：
[2018-10-24 19:34:31,834] WARN Partition [test_topic_xxx,30] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,30] (kafka.cluster.Partition) [2018-10-24 19:34:31,839] WARN Partition [test_topic_xxx,27] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,27] (kafka.cluster.Partition) [2018-10-24 19:34:31,843] WARN Partition [test_topic_xxx,24] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,24] (kafka.cluster.Partition) [2018-10-24 19:34:31,846] WARN Partition [test_topic_xxx,21] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,21] (kafka.cluster.Partition) [2018-10-24 19:34:31,850] WARN Partition [test_topic_xxx,18] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,18] (kafka.cluster.Partition) [2018-10-24 19:34:31,854] WARN Partition [test_topic_xxx,15] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,15] (kafka.cluster.Partition) [2018-10-24 19:34:31,857] WARN Partition [test_topic_xxx,12] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,12] (kafka.cluster.Partition) [2018-10-24 19:34:31,860] WARN Partition [test_topic_xxx,9] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,9] (kafka.cluster.Partition) [2018-10-24 19:34:31,863] WARN Partition [test_topic_xxx,6] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,6] (kafka.cluster.Partition) [2018-10-24 19:34:31,866] WARN Partition [test_topic_xxx,3] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,3] (kafka.cluster.Partition) [2018-10-24 19:34:31,870] WARN Partition [test_topic_xxx,0] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,0] (kafka.cluster.Partition) [2018-10-24 19:34:31,873] WARN Partition [test_topic_xxx,10] on broker 3: No checkpointed highwatermark is found for partition [test_topic_xxx,10] (kafka.cluster.Partition)
找了些资料 知道了报警的原因。
日志中提到的high watermark指的是一个partition中上一次提交的消息的offset。报警是因为topic刚创建、消费已开始、但是还没有生产者推送消息过来、对应topic没有任何offset的记录导致的。
所以该警告可以忽略，待有消息推送过来即可。
相关资料
Intra-cluster Replication in Apache Kafka
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