On Thu, Sep 27, 2018 at 12:08 PM Jin Mao <[email protected]> wrote:
> I am running luminous and the objects were copied from Isilon with a long > and similar prefix in path like /dir1/dir2/dir3/yyyy/mm/dd. The objects are > copied to various buckets like bucket_YYYYMMDD/dir1/dir2/dir3/yyyy/mm/dd. > This setup minimize some internal code change when moving from NFS to > object store. > > I heard that CRUSH may NOT evenly balance OSDs if there are many common > leading characters in the object name? However, I couldn't find any > evidence to support this. > > Does anyone know further details about this? > CRUSH does use the object name as an input to generate a hashed value, but it's not a stable hash and having common prefixes should not be an issue. Also since you're going through RGW there's quite a bit more happening to the object names, so I wouldn't worry about it. > > Thank you. > > Jin. > _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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