hdfs namenode -initializeSharedEdits 和 hdfs namenode -bootstrapStandby

hdfs namenode -initializeSharedEdits 和 hdfs namenode -bootstrapStandby
```
hdfs namenode  -initializeSharedEdits
```
将所有journal node的元文件的VERSION文件的参数修改成与namenode的元数据相同
```
hdfs namenode -bootstrapStandby
```
将active namenode的 {dfs.namenode.name.dir} 目录的内容复制到 standby namenode的{dfs.namenode.name.dir} 目录下
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原文地址：https://www.cnblogs.com/lixiaolun/p/5577361.html