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As nodes are added and deleted in a Hadoop cluster. Storage usage across DataNodes may be different. Some DataNodes’ disks are almost used up while some others’ are almost empty.
在Hadoop群集中添加和删除节点时。 跨DataNode的存储使用情况可能有所不同。 一些DataNode的磁盘几乎用完,而另一些磁盘几乎是空的。
How to balance data across DataNodes in HDFS?
如何在HDFS中的各个DataNode之间平衡数据?
Hadoop provides the balancer to redistribute the data.
Hadoop提供了用于重新分配数据的平衡器。
Brief introduction to balancer in Hadoop: balancer.
Hadoop中的balancer简介: balancer 。
The design and discussion of balancer in Hadoop: HADOOP-1652.
Hadoop中的均衡器设计和讨论: HADOOP-1652 。
The command to start balancer: hadoop balancer
as the administrator.
启动 balancer的命令: hadoop balancer
以管理员身份。
翻译自: https://www.systutorials.com/how-to-balance-datanode-storage-in-hdfs/
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