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From Thamizh <>
Subject Re: nodetools cfstats question
Date Thu, 29 Sep 2011 10:47:41 GMT
please check [default@unknown] help create column family;
These are default values,  until you explicitly mentioned on CF creation.


From: Sanjeev Kulkarni <>
Sent: Thursday, 29 September 2011 10:33 AM
Subject: nodetools cfstats question

Hey guys,
I'm using a three node cluster running 0.8.6 with rf of 3. Its a freshly installed cluster
with no upgrade history.
I have 6 cfs and only one of them is written into. That cf has around one thousand keys. A
quick key_range_scan verifies this.
However when I do cfstats, I see the following for this cf.

Number of Keys (estimate): 5248
Key cache capacity: 200000
Key cache size: 99329

What is the definition of these three output values? Both the Number of Keys and Key Cache
size are way over what they should be.
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