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From "Hiller, Dean" <Dean.Hil...@nrel.gov>
Subject Re: can we wipe CF data dir and run repair(is this safe?)
Date Fri, 01 Mar 2013 02:44:49 GMT
Yeah, we are not sure how upgradesstables is doing as it keeps startign back at 0%…..is it
percentage complete on just one file(I thought it would add up all the files and give me percent
complete on all).  At the very least, repair gives me way better info on percent complete
with a simple disk space check since I know all nodes should be around 140G as it has been
even for months (except during some compactions though it always settled and became stable).

Dean

From: Michael Kjellman <mkjellman@barracuda.com<mailto:mkjellman@barracuda.com>>
Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Date: Thursday, February 28, 2013 5:48 PM
To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Subject: Re: can we wipe CF data dir and run repair(is this safe?)

Only thing I'm worried with on this is that repair tends to be slower for me than upgradesstables
in practice whenever I've tried to do something similar. And you still will need to do a cleanup
afterwards anyways.

Sometimes just leaving it alone and not poking every two seconds might be the best bet (assuming
C* isn't dying while your trying to do the upgradesstables op)

From: Edward Capriolo <edlinuxguru@gmail.com<mailto:edlinuxguru@gmail.com>>
Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Date: Thursday, February 28, 2013 4:41 PM
To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Subject: Re: can we wipe CF data dir and run repair(is this safe?)


If you are reading at quorum you are ok. However if your reading at one you suffer a chance
of getting an empty return until repair is complete.
On Thursday, February 28, 2013, Hiller, Dean <Dean.Hiller@nrel.gov<mailto:Dean.Hiller@nrel.gov>>
wrote:
> My goal is tweaking the bloomfilter down and needing to run
> upgradesstables is really not working out and I figure wipe the CF on one
> node and then run repair to get all his data back with the new
> bloomfilter.  We backed up one node and tried this and it seems to workŠis
> this ok or will I have issues?
>
> Why is it not working out you askŠ.Well, we keep seeing an upgradesstables
> on our nreldata CF go to 100% and then start all over again at 0% so we
> killed it as it is already taking over 24 hours not sure it is getting
> anywhere.
>
> Thanks,
> Dean
>
> On 2/28/13 12:25 PM, "Michael Kjellman" <mkjellman@barracuda.com<mailto:mkjellman@barracuda.com>>
wrote:
>
>>Is your goal to rebuild a cf from scratch?
>>
>>On Feb 28, 2013, at 11:24 AM, "Hiller, Dean" <Dean.Hiller@nrel.gov<mailto:Dean.Hiller@nrel.gov>>
wrote:
>>
>>> Title says it all.  Anyone know?
>>>
>>> Thanks,
>>> Dean
>>
>>Copy, by Barracuda, helps you store, protect, and share all your amazing
>>
>>things. Start today: www.copy.com<http://www.copy.com>.
>
>
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