With two nodes, you are exposed to split brain issues, as long as you do not set minimum_master_nodes = 2.
It is recommended to use an odd number of nodes and at least 3 nodes with minimum_master_nodes = 2 to avoid split brain. Jörg On Tue, Oct 28, 2014 at 12:24 PM, Frank Evers <[email protected]> wrote: > Hi all, > > We noticed unwanted synchronisation behaviour using two nodes with > elasticsearch-1.3.4. The nodes got disconnected from each other after a > network failure and both started running their own cluster. One node got > new data pushed to it, the other didn't. After restarting the node that got > the most recent data, it joined up with the other one. This resulted in the > loss of all the new data from the master node since the network failure. > > Is this expected behaviour? If so, how can we prevent this scenario from > occurring again? > > Thanks, > > Frank > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/3bd69bfd-001c-4c62-bfde-616c1f1695c8%40googlegroups.com > <https://groups.google.com/d/msgid/elasticsearch/3bd69bfd-001c-4c62-bfde-616c1f1695c8%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAKdsXoEDS%3DZzerCHoLU%3DcsadamujEQtutcL4rd7d6t%3DR-vUOvg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
