I am using Apache Ignite 2.8.0. i am running my server without persistence. i have some records in my cache. it shows "totalAllocatedSize":18869600. Now i cleared my cache, again it shows as the same "totalAllocatedSize":18869600.(i don't have any records in my cache) why it shows like this, actually i don't have any records in cache, so it need to be show as 0. but it shows the previous value i got when some records in my cache.. why it's behave like this? or How i will get my actual memory used right now?
Like many databases, Apache Ignite will not de-allocate memory it has already allocated. You can see that you have space available by decreased fillFactor metric.