Memory on host hadoop5.vm is overcommitted. The total memory allocation is 10.5 GiB bytes but there are only 11.5 GiB bytes of RAM (11.5 GiB bytes of which are reserved for the system). Visit the Resources tab on the Host page for allocation details. Reconfigure the roles on the host to lower the overall memory allocation. Note: Java maximum heap sizes are multiplied by 1.3 to approximate JVM overhead.