I am running an HBase cluster that swaps 20 pages per second on the region
servers. We are seeing this in the cloudera manager when we have continuous
high read/write rates.
Also, we are using 38M of swap space according to free.
We have 64GB RAM on the regions. I see our memory cached is 50GB and memory
uses is 12GB.
I have not set vm.swappiness = 0 yet, but will soon and test.
How much swapping is acceptable?
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