Hello, Igniters!
I would like to discuss the implementation of ticket IGNITE-6871. In our Ignite instance there are more than 1000 caches and about 10 cache groups. To minimize the probability of data loss we need to alert when a critical level of redundancy in cluster is reached. So, we need some metric, which will count a minimal partition redundancy level for a cache group. Now there are no MXBeans for cache groups. And since cache groups were introduced, some metrics from CacheMetricsMXBean actually show information about the cache group, but not about the cache. I can implement the new metric (minimal partition redundancy level for cache group) in CacheMetricsMXBean, the same way it was before. In such case we’ll whether need to monitor this metric for all caches or to get somehow information about cache to cache group relation and to monitor this metric for only one cache per cache group. But it’s not transparent to an administrator which cache groups are existing and which caches belong to which cache group. Alternatively, I can implement a new type of MXBean for cache groups and add a new metric to this MXBean. Maybe it will be useful later to add to this MXBean some other cache group related metrics, which now are implemented in CacheMetricsMXBean. So, should I extend existing CacheMetricsMXBean or create a new type of MXBeans for cache groups?
