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? Thank you. Jin.
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