we are using many hadoop clusters
for now we are using swap size - 16G
free -g total used free shared buff/cache available Mem: 125 1 123 0 0 123 Swap: 15 0 15
but as all know swap is very slow memory that actually use the disk
in some hadoop component as zookeeper server , swap should be disables!!!
but I have the feeling that in hadoop machine swap should be the min
I think I need to decrease it to 4G ,
but I want to get more opinions