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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

  • You have 123GB free of 125GB, you can safely set the swap to disabled. – Tero Kilkanen Jan 9 at 19:28

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