min.insync.replicas是Apache Kafka中的一个关键配置参数,它定义了ISR(In-Sync Replicas,同步副本)集合中的最少副本数。ISR是Kafka数据复制机制中的一个重要概念,它包含了所有与Leader副本保持同步的副本。以下是关于min.insync.replicas的详细解释: 一、定义与作用 定义:min.insync.replicas表示ISR集合中的最少副本...
其中比较难理解的是min.insync.replicas,这个参数表示ISR集合中的最少副本数,默认值是1,并只有在acks=all或-1时才有效。 acks与min.insync.replicas搭配使用,才能为消息提供最高的持久性保证。 我们知道leader副本默认就包含在ISR中,如果ISR中只有1个副本,acks=all也就相当于acks=1了,引入min.insync.replicas的...
Kafka当然是可以通过参数来限制ISR的数量的: min.insync.replicas = n,代表的语义是,如果生产者acks=all,而在发送消息时,Broker的ISR数量没有达到n,Broker不能处理这条消息,需要直接给生产者报错。 当然这个语义的解释已经足够清晰得表达了下面这段代码的意思 defappendRecordsToLeader(records:MemoryRecords,isFromCli...
示例代码 以下是一个Java示例代码,用于修改指定Topic的min.insync.replicas参数: java import org.apache.kafka.clients.admin.AdminClient; import org.apache.kafka.clients.admin.AdminClientConfig; import org.apache.kafka.clients.admin.Config; import org.apache.kafka.clients.admin.ConfigEntry; import org.apach...
In Apache Kafka, the min.insync.replicas configuration plays a crucial role in ensuring data durability and resilience. This setting determines the minimum number of replica copies (or in-sync replicas) that must acknowledge the receipt of a record before the producer can consider the write ...
上篇文章说了，acks，1代表什么都不管，即使配置了回调也不会起作用，0代表不会等待replic副本里的不会...
10.Kafka存储在硬盘上的消息格式是什么？ 一、基本概念 介绍 Kafka是一个分布式的、可分区的、...
I need to know if the "min.insync.replicas" configured with a new value (2) is taking effect on all of our Topics that was already created before the change of this value. What I've already done: - I noticed that when I execute the command: kafka-topics --zookeeper Ser...
2. i tried to put min.insync.replicas=2 in server.properties of all the brokers and tried creating the topic with replication 3, here i was expecting in synch replica to be 2 but no its again 3. 3. then i tried to create topic by providing config with this : kafka-topics.sh --...
cluster-getkeysinslot.md cluster-info.md cluster-keyslot.md cluster-meet.md cluster-nodes.md cluster-replicas.md cluster-replicate.md cluster-reset.md cluster-saveconfig.md cluster-set-config-epoch.md cluster-setslot.md cluster-slaves.md cluster-slots.md command-count.md command-getkeys.md...