Hi, @seyeony! In general Ignite need some heap for temp objects when loading entries to cache. I would recommend to use such very raw approximation: 200 bytes for entry, so max_heap = 200 * max_entries_numbers + 512MB (for Ignite system needs).
But to have a clear answer - take a heap dump and find what takes memory. -- Alexey Kuznetsov GridGain Systems www.gridgain.com
