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Posted to hdfs-dev@hadoop.apache.org by Azuryy Yu <az...@gmail.com> on 2013/04/04 09:16:48 UTC

Re: What do ns_quota and ds_quota mean in an namednode entry

name space, disk space. ns means block numbers limits. ds is total file
size limitation.
On Apr 4, 2013 3:12 PM, "Bert Yuan" <be...@gmail.com> wrote:

> Bellow is json format of an namednode entry:
> {
>     inode:{
>         inodepath:'/anotherDir/biggerfile',
>         replication:3,
>         modificationtime:'2009-03-16 14:15',
>         accesstime:'2009-03-16 14:15',
>         blocksize:134217728,
>         blocks:{
>             numblocks:3,
>             block:[
>                 {
>                     blockid:-3825289017228345300,
>                     numbytes:134217728,
>                     generationstamp:1002
>                 },
>                 {
>                     blockid:-561951562131659300,
>                     numbytes:134217728,
>                     generationstamp:1002
>                 },
>                 {
>                     blockid:524543674153269000,
>                     numbytes:18196208,
>                     generationstamp:1002
>                 }
>             ]
>         },
>         nsquota:-1,
>         dsquota:-1,
>         permissions:{
>             username:'jhoman',
>             groupname:'supergroup',
>             permstring:'rw-r--r--'
>         }
>     }
> }
>
> I don't know what's the meaning of 'nsquota' and 'dsquota', could anyone
> explain this to me?
>
>