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Posted to user@cassandra.apache.org by mcasandra <mo...@gmail.com> on 2011/02/18 00:40:14 UTC
Health of the cluster
I have just started setting up Hector. I have 2 node cluster running in
"foreground" for my test so that I can watch everything. One big question
came to my mind that as I increase the cluster how do I verify the health of
the cluster. How do I see that it is all good.
Since I am new I can't quantify from what I mean by in good health. But I
guess what I mean is that key distributions are fine.
CF levels are being maintained for the keys.
Check consistency, how many stale or old object versions are sitting around.
Also, do I need to repair/cleanup anything etc.
I have been using Oracle so far so in Oracle for instance I look at ADDM/AWR
report or internal tables (dba*) tables that will give more insight.
Here things become more complicated because of RF, hinted hand off etc.
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Re: Health of the cluster
Posted by Aaron Morton <aa...@thelastpickle.com>.
Have a read of this page http://wiki.apache.org/cassandra/Operations
Aaron
On 18/02/2011, at 12:40 PM, mcasandra <mo...@gmail.com> wrote:
>
> I have just started setting up Hector. I have 2 node cluster running in
> "foreground" for my test so that I can watch everything. One big question
> came to my mind that as I increase the cluster how do I verify the health of
> the cluster. How do I see that it is all good.
>
> Since I am new I can't quantify from what I mean by in good health. But I
> guess what I mean is that key distributions are fine.
>
> CF levels are being maintained for the keys.
>
> Check consistency, how many stale or old object versions are sitting around.
>
> Also, do I need to repair/cleanup anything etc.
>
> I have been using Oracle so far so in Oracle for instance I look at ADDM/AWR
> report or internal tables (dba*) tables that will give more insight.
>
> Here things become more complicated because of RF, hinted hand off etc.
> --
> View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Health-of-the-cluster-tp6038092p6038092.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.