Hello! Do you have a reproducer which highlights the issue?
Having said that, I don't really recommend having long-lived nodes outside BLT. Maybe it was expected to be a supported scenario, but I doubt it is tested very much. Nowadays it is assumed that all non-BLT nodes get added after baseline auto-adjust. You can try the following: declare a persistent data region on a subset of nodes (ones which should hold data) and create all caches on that data region. Declare a persistent small default region for logistical reasons only (mixed in memory-persistent clusters are problematic). Also, why not just use client nodes in place of non-data-holding? Regards, -- Ilya Kasnacheev вт, 8 сент. 2020 г. в 05:59, xingjl6280 <xingjl6...@163.com>: > Hi Denis, > > thanks for your reply. > I did some experiment. Seems the non-BLT node only works for PARTITIONED > cache mode, but not for REPLICATED. > For REPLICATED mode, the non-BLT node startup will stuck without any > exception. > So this is the design, right? > > My cluster holds many semaphore and atomicRef to sync biz logic, therefore > I > cannot afford any data partition loss. > > > Regards, > Johnny > > > Denis Mekhanikov wrote > > When you have persistence configured in your cluster, some set of nodes > > form a baseline topology (BLT). Those are the nodes that store the data > > and > > persist it on their disks. > > Nodes outside of the BLT can query the data stored on other nodes that > are > > in the BLT. > > Normally nodes are not added to the baseline automatically when they join > > the cluster. It requires manual actions or configuration of baseline > > auto-adjustment: > > > https://www.gridgain.com/docs/latest/developers-guide/baseline-topology#baseline-topology-autoadjustment > > > > You can add the nodes that you want to store and persist the data to the > > baseline. Others can work as "compute-only" nodes. > > If you want to optimize the work of nodes that are outside of the BLT, > > consider using a near cache: > > https://www.gridgain.com/docs/latest/developers-guide/near-cache > > > > More information about the Baseline Topology feature: > > https://www.gridgain.com/docs/latest/developers-guide/baseline-topology > > > > Denis > > > > > > -- > Sent from: http://apache-ignite-users.70518.x6.nabble.com/ >
