It is showing 5.71 MB because only this much data is stored in the HDFS as of now. DFS used is a count of all the space used by the dfs.data.dirs i.e the actual data stored in your HDFS. The non-dfs used space is whatever space is occupied beyond that.
Warm Regards, Tariq https://mtariq.jux.com/ On Wed, Jan 9, 2013 at 7:37 PM, Dora <dora0...@gmail.com> wrote: > Hi JM, > > Thanks for you quickly answer! > > But I'm still wonder why I just used 5.71 MB, but the "Configured Capaity" is > 98.43 GB as the following figure. > > BTW, what's the "Non DFS Used" meaning? > > [image: 埋め込み画像 1] > > Best Regards, > > Dora > > --------------------------------- > > Hi Dora, > > Hadoop is not deciding. It's "simply" pushing the same amount of data > on each node. If a node is out of space, it's removed from the "write" > list and is used only for reads. > > Hadoop is only using the space it needs. So if it uses only 50G it's > because it don't need the extra 50G yet. > > JM > > 2013/1/9, Dora <dora0...@gmail.com> <dora0...@gmail.com>: > > Hi all, > > Could you tell me how Hadoop decide tha capacity of each datanodes? > I've installed CDH3 on 2 VM machine, each VM has 100G space, > And I found that Hadoop occupied 50G/100G, why? > Thanks. > > Best Regards, > Dora > > >
<<image.png>>
