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  • Custom partition assignment and migration kafka集群扩充迁移指定partition

    The partition reassignment tool can also be used to selectively move replicas of a partition to a specific set of brokers. When used in this manner, it is assumed that the user knows the reassignment plan and does not require the tool to generate a candidate reassignment, effectively skipping the --generate step and moving straight to the --execute step

    For instance, the following example moves partition 0 of topic foo1 to brokers 5,6 and partition 1 of topic foo2 to brokers 2,3:

    The first step is to hand craft the custom reassignment plan in a json file:

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    > cat custom-reassignment.json
    {"version":1,"partitions":[{"topic":"foo1","partition":0,"replicas":[5,6]},{"topic":"foo2","partition":1,"replicas":[2,3]}]}

    Then, use the json file with the --execute option to start the reassignment process:

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    > bin/kafka-reassign-partitions.sh --zookeeper localhost:2181 --reassignment-json-file custom-reassignment.json --execute
    Current partition replica assignment
     
    {"version":1,
    "partitions":[{"topic":"foo1","partition":0,"replicas":[1,2]},
                  {"topic":"foo2","partition":1,"replicas":[3,4]}]
    }
     
    Save this to use as the --reassignment-json-file option during rollback
    Successfully started reassignment of partitions
    {"version":1,
    "partitions":[{"topic":"foo1","partition":0,"replicas":[5,6]},
                  {"topic":"foo2","partition":1,"replicas":[2,3]}]
    }

    The --verify option can be used with the tool to check the status of the partition reassignment. Note that the same expand-cluster-reassignment.json (used with the --execute option) should be used with the --verify option:

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    > bin/kafka-reassign-partitions.sh --zookeeper localhost:2181 --reassignment-json-file custom-reassignment.json --verify
    Status of partition reassignment:
    Reassignment of partition [foo1,0] completed successfully
    Reassignment of partition [foo2,1] completed successfully
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  • 原文地址:https://www.cnblogs.com/felixzh/p/8038827.html
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