Kafka中__consumer_offsets和_schema主题的用途是什么? [英] What is the use of __consumer_offsets and _schema topics in Kafka?
问题描述
设置Kafka Broker集群并创建了几个主题之后，我们发现Kafka自动创建以下两个主题:
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承诺偏移量的信息:每组使用者的分区数(groupID).这是一个紧凑的主题，因此将定期压缩数据，并且仅提供最新的偏移量信息.
__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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