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From sankalp kohli <>
Subject Re: write load while idle?
Date Mon, 26 Aug 2013 19:12:01 GMT
Storing OpsCenter data on the same cluster you are monitoring might not
work well. I had an issue in which Cassandra had issues and OpsCenter wont
load. You might want to store this data in some other cluster or create a
fake DC and assign OpsCenter data to that fake DC.

On Thu, Aug 22, 2013 at 4:55 PM, Nate McCall <> wrote:

> Yep - OpsCenter stores it's own data in Cassandra. Thus the activity.
> You could also turn on debug logging for StorageProxy on one of the nodes
> if you really want to know.
> On Thu, Aug 22, 2013 at 6:18 PM, Robert Coli <> wrote:
>> On Fri, Aug 16, 2013 at 4:46 PM, Keith Freeman <> wrote:
>>> I have a 3-node cluster running 1.2.8, and with no clients connected
>>> (for about an hour) opscenter is showing a heartbeat-like pattern for total
>>> writes in the "Cluster Reads & Writes" panel on the dashboard ranging from
>>> about 10/sec to 26/sec.  Total reads on the other hand are showing a
>>> straight line hovering just barely above 0/sec.  There are no compactions,
>>> etc. (the logs are totally quiet).
>>> Is this normal?  I'm new to cassandra so maybe this is normal but I
>>> couldn't find an explanation in the docs and it seems pretty high for an
>>> idle system.
>> That doesn't seem normal to me, but then I don't run Opscenter. Have you
>> tried turning off OpsCenter to see if it changes?
>> Also, those writes have to go.. somewhere? If you inspect memtables or
>> flush, where do you see data being stored or flushed?
>> =Rob

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