Does that happen immediately? I am basically trying to understand: When a physical node goes down (let's say it is temporarily restarted, or down for even a couple hours due to some sort of failure), will that cause an increase in disk and network bandwidth at the moment that it goes down as data is re-shuffled across the cluster?
Thanks, Jeff On Mar 24, 2014, at 1:38 PM, Seth Thomas <[email protected]> wrote: > Data is redistributed temporarily (indefinitely) until the primary node comes > back online. So primary ownership of data would not be changed but your keys > could be living on another physical node if any of the primary replicas were > down. > > So to answer your question directly: Yes (in the narrowest definition) > > > On March 24, 2014 at 10:34:22, Jeff Peck ([email protected]) wrote: > >> Thank you. So, does that mean that no redistribution of data would occur >> unless the node is manually removed? >> >> - Jeff >> >> >> On Mar 24, 2014, at 1:31 PM, Seth Thomas <[email protected]> wrote: >> >>> Jeff, >>> >>> When a node is no longer responding a process called hinted handoff[1] >>> takes over and ensure that your N (replication) value is met by allowing >>> other nodes to temporarily take responsibility for the vnodes of the downed >>> node. This node can return to the cluster and will resume operations for >>> the vnodes it’s primarily responsible for or you could remove the node[2] >>> from the cluster which would redistribute the primary responsibly among the >>> remaining nodes. I’d also give our docs on replication[3] a look for more >>> information. >>> >>> Seth Thomas >>> >>> [1] >>> http://docs.basho.com/riak/latest/theory/concepts/glossary/#Hinted-Handoff >>> [2] >>> http://docs.basho.com/riak/latest/ops/running/nodes/adding-removing/#Removing-a-Node-From-a-Cluster >>> [3] http://docs.basho.com/riak/latest/theory/concepts/Replication/ >>> >>> >>> On March 24, 2014 at 9:33:17, Jeff Peck ([email protected]) wrote: >>> >>>> Is there a description of what happens internally when a node goes down? I >>>> am curious if any there would be any sort of reshuffling or redistribution >>>> of data in the remaining vnodes? Or would the node simply be unavailable >>>> until restarted? >>>> >>>> Thanks, >>>> Jeff >>>> _______________________________________________ >>>> riak-users mailing list >>>> [email protected] >>>> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
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