Hi Azuryy Yes.that is what is. Thank you for your reply. I am making effort to make clear about federation and HA.
Regards. 2013/2/25 Azuryy Yu <azury...@gmail.com> > I think you mixed federation with HA. am I right? > > If another name node hasn't changes, then It doesn't do any edit log > rolling. federated NNs don't keep concurrency( I think you want say keep > sync-able?) > > > On Sun, Feb 24, 2013 at 11:09 PM, YouPeng Yang > <yypvsxf19870...@gmail.com>wrote: > >> Hi All >> >> I'm testing the HDFS Federation.I have 2 namenodes in my cluster. >> I find that it is Rolling Edit Log continuously on one >> namenode,however the other one changes nothing. >> >> My question : >> 1. Is it the right situation. >> 2. I have thought that the two namenodes shoud keep concurrency. >> why they get differences. >> 3. is there any advanced docs about HDFS Federation. >> >> thanks. >> >> Regards. >> >> >> >> > >
