Re: Supervisely, RAID0 provides best io performance whereas no RAID the worst

2016-07-30 Thread Andrew Wright
Yes you are. If you loose any one of your disks with a raid 0 spanning all drive you will loose all the data in that directory. And disks do die. Yes you get better single threaded performance but are putting that entire directory/data set at higher risk Cheers On Saturday, July 30, 2016, Shad

Re: issue about add disk on DN

2013-11-06 Thread Andrew Wright
It is possible to rebalance across hosts but I do not believe it is possible to rebalance within a data node. Best chance to decommission the host have all the data redistribute to other nodes and then add the node back into the cluster and rebalance then. Also, the dn will identify when the indiv

Re: HDFS group permissions

2012-08-09 Thread Andrew Wright
Thanks for the detailled explanation on this. I have been fighting with this off and on in 0.20.203. Cheers, Andrew On Aug 9, 2012 1:55 PM, "John Armstrong" wrote: > On 08/09/2012 01:52 PM, Justin Woody wrote: > >> Just to close the thread, the problem was that the user and group were >> not pre