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
