Consistent ID is involved in partition to node mappings. So if node preserves its consistent ID during restarts it picks the same partitions.
--Yakov 2015-07-08 18:22 GMT+03:00 Atri Sharma <atri.j...@gmail.com>: > I still don't understand why the consistent Id is needed honestly... > On 8 Jul 2015 20:49, "Yakov Zhdanov" <yzhda...@gridgain.com> wrote: > > > I think that this should be added to configuration so user has > opportunity > > to override auto assigned one since in case you change ifconfig of the > host > > or add/remove network card consistent ID will be changed and node > launched > > on the host will not pick up the same partitions as before. > > > > > > -- > > Yakov Zhdanov, Director R&D > > *GridGain Systems* > > www.gridgain.com > > > > 2015-07-07 20:48 GMT+03:00 Dmitriy Setrakyan <dsetrak...@apache.org>: > > > > > To my knowledge, nodes are already started with consistent hash code > used > > > for affinity, which survives restarts. Can someone clarify why we need > > the > > > consistent ID as well? > > > > > > D. > > > > > > On Tue, Jul 7, 2015 at 5:45 AM, Ira Vasilinets < > ivasilin...@gridgain.com > > > > > > wrote: > > > > > > > Alexey, > > > > > > > > I do not want to remove default implementation of consistentId. If > user > > > > would like to configure consistentId, he should write xml file per > > node. > > > > I will be glad if someone propose more elegant solution =) > > > > > > > > On Tue, Jul 7, 2015 at 2:07 PM, Alexey Kuznetsov < > > > akuznet...@gridgain.com> > > > > wrote: > > > > > > > > > Ira, usually we have xml file with node config and start several > > nodes. > > > > > What would happened if user specify consistent id in spring xml > file > > > and > > > > > start several nodes with same config? > > > > > Or in this case user should write as much xml files as much nodes > he > > > > going > > > > > to start? > > > > > > > > > > > > > > > On Tue, Jul 7, 2015 at 6:00 PM, Ira Vasilinets < > > > ivasilin...@gridgain.com > > > > > > > > > > wrote: > > > > > > > > > > > ClusterNode.consistentId is consistent globally unique node ID > and > > > > should > > > > > > be the same after node restart. Node consistent id is a string > that > > > > > > contains node's addresses and port discovery number by default. > > After > > > > > > restarting node default consistentId could change. I think that > > > > > > IgniteConfiguration should have possibility to configurate > constant > > > > > node's > > > > > > consistentId. > > > > > > > > > > > > On Tue, Jul 7, 2015 at 1:31 PM, Dmitriy Setrakyan < > > > > dsetrak...@apache.org > > > > > > > > > > > > wrote: > > > > > > > > > > > > > Ira, > > > > > > > > > > > > > > Can you please describe what a consistent ID is? > > > > > > > > > > > > > > D. > > > > > > > > > > > > > > On Tue, Jul 7, 2015 at 3:27 AM, Ira Vasilinets < > > > > > ivasilin...@gridgain.com > > > > > > > > > > > > > > wrote: > > > > > > > > > > > > > > > Hi! > > > > > > > > > > > > > > > > I looked throught IgniteConfiguration methods and noticed > that > > we > > > > do > > > > > > not > > > > > > > > have posibility to configure node consistentId. I think > > > > > > > IgniteConfiguration > > > > > > > > should have methods setConsistentId and getConsistentId. > > > > > > > > > > > > > > > > Thoughts? > > > > > > > > > > > > > > > > Kind Regards, > > > > > > > > Ira. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > Alexey Kuznetsov > > > > > GridGain Systems > > > > > www.gridgain.com > > > > > > > > > > > > > > >
