cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Nate McCall <>
Subject Re: Definition of QUORUM consistency level
Date Fri, 09 Jun 2017 03:11:30 GMT
> So, for the quorum, what we really want is that there is one overlap among
> the nodes in write path and read path. It actually was my assumption for a
> long time that we need (N/2 + 1) for write and just need (N/2) for read,
> because it's enough to provide the strong consistency.

You are write about strong consistency with that calculation, but if I want
to issue a QUORUM read just by itself, I would expect a majority of nodes
to reply. How it was written might be immaterial to my use case of reading
'from a majority.'

Nate McCall
Wellington, NZ

Apache Cassandra Consulting

View raw message