Hello Riak-users We have 9 node Riak-cluster, that we use to store user accounts.
Some of the crucial data fields of user account are indexed using I2, so that we can do secondary index queries based on them. Today, we tested how our cluster performs when few nodes go down, and results were not very good. If more than 2 nodes go down, all I2 queries will start failing, returning HTTP 500, with "insufficient vnodes available" error. After nodes are up again, things start working again. Normal object CRUD operations worked fine. Is this to be expected behaviour ? Funny thing is, that we have other cluster, with same configuration but with 6 nodes, for other environment, and that also experiences same problems when more than 2 nodes go down, so it does not seem to have anything to do with percentage of nodes being down.. Our ring size is 256, and current Riak version is 2.2. Both clusters were first created years ago, with Riak 1.4, if memory serves, and I believe we tested this same thing back then, and I2 queries did not stop working this easily then.. Any help would be appreciated!
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