前一個文章"單副本kafka遷移分區"介紹了，怎樣對分區進行遷移，然而在遷移最后一台broker的過程中，controler掛掉了，導致遷移任務一直沒有進度，這里記錄一下處理的過程
如果有一個遷移任務在執行時，重復執行，會有下面的提示，./bin/kafka-reassign-partitions.sh 是不能進行取消或者更改遷移任務狀態的。
kafka.common.AdminCommandFailedException: Partition reassignment currently in progress for Map
處理思路：
1.登陸zk，把當前的任務刪除
2.重新執行任務
具體操作：
2.1.登陸zk，刪除任務
[zk: localhost:8181(CONNECTED) 2] ls /
[cluster, controller_epoch, controller, brokers, zookeeper, kafka-manager, admin, isr_change_notification, consumers, burrow, latest_producer_id_block, config]
[zk: localhost:8181(CONNECTED) 3] ls /admin/reassign_partitions
[]
#查看當前的任務
[zk: localhost:8181(CONNECTED) 5] get /admin/reassign_partitions
{"version":1,"partitions":[{"topic":"yuanlog_json","partition":589,"replicas":[135]},{"topic":"………………
cZxid = 0x403a9ff6a
ctime = Thu Jul 25 10:50:12 CST 2019
mZxid = 0x403c68a74
mtime = Fri Jul 26 05:47:36 CST 2019
pZxid = 0x403a9ff6a
cversion = 0
dataVersion = 136189
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 9348
numChildren = 0
#刪除任務
[zk: localhost:8181(CONNECTED) 8] rmr /admin/reassign_partitions
[work@kafka-node-134 kafka_2.11-0.10.0.0]$ ./bin/kafka-reassign-partitions.sh --zookeeper 10.69.59.186:8181 --reassignment-json-file ./tmp/136_exec0801.json --execute
Current partition replica assignment
2.2 重新執行遷移任務
[work@kafka-node-134 kafka_2.11-0.10.0.0]$ ./bin/kafka-reassign-partitions.sh --zookeeper 10.10.10.1:8181 --reassignment-json-file ./tmp/136_exec0801.json --execute
Current partition replica assignment
………………
Successfully started reassignment of partitions {"version":1,"partitions":[{"topic":"XX","partition":237,"replicas":[157]}]}
2.3 查看任務狀態
[work@kafka-node-134 kafka_2.11-0.10.0.0]$ ./bin/kafka-reassign-partitions.sh --zookeeper 10.10.10.1:8181 --reassignment-json-file ./tmp/136_exec0801.json --verify