Java中的min.insync.replicas和acks参数在哪里设置？

Question

I need to set two parameters min.insync.replicas and acks . The official documentation says that the parameter min.insync.replicas is the broker's parameter. Do I understand correctly that for all topics it should be specified inside the server.properties file? And for one - using the command kafka.config.sh. Acks parameter can only be set when configuring the producer, for example, from the app? Changes to the file producer.properties won't help?

Answer 1

Topic-related properties defined in server.properties are effective for all the topics (assuming you don't modify any configuration when creating the topic).

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Now if for any reason you want to modify one property for a specific topic, you can overwrite the global configuration by providing the new config for that topic. For example,

bin/kafka-configs.sh \
    --zookeeper localhost:2181 \
    --alter \
    --entity-type topics \
    --entity-name yourTopicName \
    --add-config min.insync.replicas=2

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Alternatively, if you want to create a topic with different configuration to the one defined in server.properties you can use:

bin/kafka-topics.sh \
    --zookeeper localhost:2181 \
    --create \
    --topic yourTopicName \
    --partitions 1  \
    --replication-factor 3 \
    --config min.insync.replicas=2

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Finally, if you want to verify that the configuration is effective, you can simply describe the topic and the added configurations will be shown to the output of ( Configs on the top right corner):

bin/kafka-topics \
    --zookeeper localhost:2181 \
    --describe  \
    --topic yourTopicName