Thank You. Now it's clear. On Tue, Nov 4, 2008 at 11:31 PM, stack <[EMAIL PROTECTED]> wrote:
> Slava Gorelik wrote: > >> One more regarding the blockCache, how changes in store files (as i >> understand those are MapFiles) are reflected on client side cache. If we >> are >> talking about more than one client that doing a changes ? If each client >> has >> different part of the MapFile ? or something else ? >> >> > > The block cache cache is over in the server. Its a cache for store files > which never change once written. Did I say client-side cache? I should > have been more clear. The client in this case is the regionserver itself. > The cache is so the regionserver saves on its trips over the network > visiting datanodes. > St.Ack > > > > Best Regards. >> >> On Tue, Nov 4, 2008 at 11:10 PM, Slava Gorelik <[EMAIL PROTECTED] >> >wrote: >> >> >> >>> I can try to reproduce it again, but before this i would like to send you >>> a >>> logs. >>> Best Regards. >>> >>> >>> On Tue, Nov 4, 2008 at 10:05 PM, stack <[EMAIL PROTECTED]> wrote: >>> >>> >>> >>>> Then we should try and figure if there is an issue in the balancer, or >>>> maybe there is something missing if we are not doing a big upload in a >>>> manner that balances the upload across HDFS? >>>> St.Ack >>>> >>>> Slava Gorelik wrote: >>>> >>>> >>>> >>>>> Sure, i'll arrange logs tomorrow.About balancer, to wait when the >>>>> massive >>>>> work is finished is good in testing environment but in production it's >>>>> not >>>>> relevant :-) >>>>> >>>>> Best Regards. >>>>> >>>>> On Tue, Nov 4, 2008 at 9:48 PM, stack <[EMAIL PROTECTED]> wrote: >>>>> >>>>> >>>>> >>>>> >>>>> >>>>>> Slava Gorelik wrote: >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>>> Hi.Regarding the failure of new block creation - i failed to run >>>>>>> hbase >>>>>>> till >>>>>>> i reformatted HDFS again. >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> I'd be interested in the logs. >>>>>> >>>>>> I just wandering if hadoop re balancing is necessary? Will it balance >>>>>> >>>>>> >>>>>> >>>>>> >>>>>>> itself >>>>>>> ? As i understand hadoop balancer is moving data between data nodes, >>>>>>> but >>>>>>> in >>>>>>> my case this is during massive (8 clients just adding a records - >>>>>>> about >>>>>>> 400 >>>>>>> requests for all region servers - 6). So, is it good idea to run >>>>>>> balancer during heavy load ? >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> I don't have sufficient experience running the balancer. Perhaps wait >>>>>> till >>>>>> upload is done, then run it? >>>>>> >>>>>> St.Ack >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>>> >>>> >>>> >>> >> >> > >
