Hi Stephane, Ignite has a check: it sums all JVM heaps and off-heap sizes for all nodes in the cluster that you run on the same host, and check if it takes more then 80% of host RAM OR *there's less then 4GB left*:
https://github.com/apache/ignite/blob/ef6764e99c318a857ec92d6a270d8ef621cfde66/modules/core/src/main/java/org/apache/ignite/internal/IgniteKernal.java#L1753 So your system just have only 1.5GB, so you always will see this message, while "required" size less than "available" and there's still some space for OS and your tools you can ignore this message. Plus, even if you will require more space then your RAM capacity, I believe you use SWAP, don't you? so it's still okay to run Ignite, but please, remember that you can have poor performance due to lack of RAM. Thanks, Mike. -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/
