擴容副本前：
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編輯json文件increase-replication-factor.json： vi increase-replication-factor.json
{"version":1,"partitions":[{"topic":"test2","partition":0,"replicas":[0,1,2]}]}
執(zhí)行命令：
./bin/kafka-reassign-partitions.sh --zookeeper node1:2181 --reassignment-json-file increase-replication-factor.json --execute
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校驗：
./bin/kafka-reassign-partitions.sh --zookeeper node1:2181 --reassignment-json-file increase-replication-factor.json --verify
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擴容分區(qū)后結(jié)果
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