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From "Durity, Sean R" <>
Subject RE: [EXTERNAL] Re: Cluster size "limit"
Date Wed, 13 Mar 2019 17:30:54 GMT
If you can change to 8 vnodes, it will be much better for repairs and other kinds of streaming
operations. The old advice of 256 per node is now not very helpful.


From: Ahmed Eljami <>
Sent: Wednesday, March 13, 2019 1:27 PM
Subject: [EXTERNAL] Re: Cluster size "limit"

Yes, 256 vnodes

Le mer. 13 mars 2019 à 17:31, Jeff Jirsa <<>>
a écrit :
Do you use vnodes? How many vnodes per machine?
Jeff Jirsa

On Mar 13, 2019, at 3:58 PM, Ahmed Eljami <<>>

We are planning to add a third datacenter to our cluster (already has 2 datacenter, every
datcenter has 50 nodes, so 100 nodes in total).

My fear is that an important number of nodes per cluster (> 100) could cause a lot of problems
like gossip duration, maintenance (repair...)...

I know that it depends on use cases, volume of data and many other thing, but I would like
that you share your  experiences with that.



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