Kafka中__consumer_offsets和_schema主题有什么用? [英] What is the use of __consumer_offsets and _schema topics in Kafka?
问题描述
在搭建好Kafka Broker集群并创建了几个topic后，我们发现Kafka自动创建了以下两个topic:
After setting up the Kafka Broker cluster and creating few topics, we found that the following two topics are automatically created by Kafka:
__consumer_offsets_schema
这些主题的重要性和用途是什么?
What is the importance and use of these topics ?
推荐答案
__consumer_offsets 用于存储有关每个主题的已提交偏移量的信息:每个消费者组 (groupID) 的分区.它是压缩主题，因此数据将被定期压缩，并且只有最新的偏移量信息可用.
__consumer_offsets is used to store information about committed offsets for each topic:partition per group of consumers (groupID). It is compacted topic, so data will be periodically compressed and only latest offsets information available.
_schema - 不是默认的 kafka 主题(至少在 kafka 8,9).它是由 Confluent 添加的.查看更多:Confluent Schema Registry - github.com/confluentinc/schema-registry(感谢@serejja)
_schema - is not a default kafka topic (at least at kafka 8,9). It is added by Confluent. See more: Confluent Schema Registry - github.com/confluentinc/schema-registry (thanks @serejja)
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