You can determine the free space and usage for entire file systems using df, but this only gives you part of the picture.
使用df,您可以确定整个文件系统的空闲空间和空间使用情况,但这只是描述了部分信息。
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A module was implemented to balance the disk spaceusage on a Hadoop Distributed File System cluster when some data nodes became full or when new empty nodes joined the cluster.