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