Hi everyone, We are currently using ignite 2.7 and I have some basic questions in regards to ignite’s behavior during PME. After referring to ignite’s documentation and the cwiki’s section about PME(partition map exchange under the hood) the following has been made apparent. When a new node joins the cluster (be it a client, or a server node) topology will change. Now is my understanding correct in the following issues? 1) if the node joined is a server node a PME will occur and data will be rebalanced among nodes correct ? 2) if the newly node joined is a client is my understanding correct that PME AND data rebalancing should not occur ? If they do occur why is it so since according to the docs in a client node no data are stored and it does not participate in computations (at least not without explicitly requesting from another node that computations should be handled in a cluster group that contains the clients). 3) if a new node is added to the cluster and PME and rebalancing starts does it mean that the cluster for the duration of PME is not responding to requests to serve data from caches and computations? 4) if 3 above is true that would mean that the logic of the app that uses the ignite infrastructure must account for that possibility yes? Thank you all in advance.
Evangelos Morakis
