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Posted to user@cassandra.apache.org by Dan Hendry <da...@gmail.com> on 2010/12/10 16:42:14 UTC

Estimate Keys - JMX

Recent versions of Cassandra (I noticed it in RC1, which is what I am using)
add a very cool "estimateKeys" JMX operation for each column family. I have
a quick question: Is the value an estimate for the number of keys on a
particular node or for the entire cluster?

 

I have a 5 node cluster (RF=2) and am getting wildly different estimates
from different nodes. For example, one says ~50 million and another ~75
million. 

 

Dan Hendry

(403) 660-2297