Yes it’s the total size. Could it be that tombstones or data that nodes no longer own is not being copied/streamed to the data center in AWS?
From: Jeff Jirsa <jji...@gmail.com> Reply-To: "user@cassandra.apache.org" <user@cassandra.apache.org> Date: Monday, August 7, 2017 at 2:51 PM To: cassandra <user@cassandra.apache.org> Subject: Re: Different data size between datacenters And when you say the data size is smaller, you mean per node? Or sum of all nodes in the datacenter? With 185 hosts in AWS vs 135 in your DC, I would expect your DC hosts to have 30% less data per host than AWS. If instead they have twice as much, it sounds like it's balancing by # of tokens instead, which may be an indication that you're somehow using SimpleStrategy, or your NetworkTopologyStrategy is somehow misconfigured for one or more keyspaces. Can you paste your keyspace replication strategy lines, anonymized as needed? On Mon, Aug 7, 2017 at 1:46 PM, Chuck Reynolds <creyno...@ancestry.com<mailto:creyno...@ancestry.com>> wrote: Yes to the NetworkTopologyStrategy. From: Jeff Jirsa <jji...@gmail.com<mailto:jji...@gmail.com>> Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>> Date: Monday, August 7, 2017 at 2:39 PM To: cassandra <user@cassandra.apache.org<mailto:user@cassandra.apache.org>> Subject: Re: Different data size between datacenters You're using NetworkTopologyStrategy and not SimpleStrategy, correct? On Mon, Aug 7, 2017 at 11:50 AM, Chuck Reynolds <creyno...@ancestry.com<mailto:creyno...@ancestry.com>> wrote: I have a cluster that spans two datacenters running Cassandra 2.1.12. 135 nodes in my data center and about 185 in AWS. The size of the second data center (AWS) is quite a bit smaller. Replication is the same in both datacenters. Is there a logical explanation for this? thanks
