存在隐患 : 3 racks are required for the erasure coding policies: RS-6-3-1024k. The number of racks is on
On for The of number is 存在 are
2023-09-11 14:14:47 时间
刚装的CDH6.2.1版本的集群
172.30.81.203 manager
172.30.81.204 node1
172.30.81.205 node2
172.30.81.206 node3
存在隐患：9 DataNodes are required for the erasure coding policies: RS-6-3-1024k.The number of DataNodes is only 3.
9 DataNodes are required for the erasure coding policies RS-
解决方案
使用RS-6-3-1024k编码纠删码策略至少需要9个DataNodes，当前只安装了3个，所以再增加6个DataNodes节点即可解决该问题。
修改编码纠删码策略同样也可以解决，不过会比较麻烦
补充：
纠删码基本操作
- 查看当前支持的纠删码策略
命令如下
hdfs ec -listPolicies
9 DataNodes are required for the erasure coding policies RS-
查看Hadoop版本命令：hadoop version
9 DataNodes are required for the erasure coding policies
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