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在生产环境当中,由于某个主题的重要等级需要提升,我们考虑增加副本。副本数的增加需要先制定计划,然后根据计划执行。
bin/kafka-topics.sh --bootstrap-server 192.168.25.129:9092 --create --partitions 3 --replication-factor 1 --topic test
vim increase-replication-factor.json
输入如下内容:
{ "version":1, "partitions":[ {"topic":"test", "partition":0, "replicas":[0,1,2]}, {"topic":"test", "partition":1, "replicas":[0,1,2] }, {"topic":"test", "partition":2, "replicas":[0,1,2] } ] }
bin/kafka-reassign-partitions.sh --bootstrap-server 192.168.25.129:9092 --reassignment-json-file increase-replication-factor.json --execute
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