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From Maxim Potekhin <potek...@bnl.gov>
Subject Re: Multiple indexes - how does Cassandra handle these internally?
Date Mon, 24 Jan 2011 02:05:06 GMT
Not silly at all, sorry for eschewing clarity in Latin usage:

millions, not thousands.

Here in the States, we typically use M for millions.
Anyhow, my system generates 1 million (large) records every three days,

Cheers,
Maxim



On 1/23/2011 8:35 PM, David McNelis wrote:
>
> Silly question, M us thousand or million?  In print, thousand is M, fwiw
>
> Sent from my Droid
>
> On Jan 23, 2011 7:26 PM, "Maxim Potekhin" <potekhin@bnl.gov 
> <mailto:potekhin@bnl.gov>> wrote:
> > Aaron -- thanks!
> >
> > I don't have examples like Timo.
> >
> > But,
> >
> > I'm keen to use multiple indices over a database
> > of 300M rows.
> >
> >
> > Maxim
> >
> >
> > On 1/23/2011 3:28 PM, Aaron Morton wrote:
> >> Timo / Maxim
> >> Could you provide a more concrete example and I'll try to look into 
> it tonight.
> >>
> >> Cheers
> >> Aaron
> >>
> >>
> >> On 22/01/2011, at 5:01 AM, Maxim Potekhin<potekhin@bnl.gov 
> <mailto:potekhin@bnl.gov>> wrote:
> >>
> >>> Well it does sound like a bug in Cassandra. Indexes MUST commute.
> >>>
> >>> I really need this functionality, it's a show stopper for me...
> >>>
> >>> On 1/21/2011 10:56 AM, Timo Nentwig wrote:
> >>>> On Jan 21, 2011, at 16:46, Maxim Potekhin wrote:
> >>>>
> >>>>> But Timo, this is even more mysterious! If both conditions are 
> met, at least
> >>>>> something must be returned in the second query. Have you tried 
> this in CLI?
> >>>>> That would allow you to at least alleviate client concerns.
> >>>> I did this on the CLI only so far. So value comparison on the 
> index seems to be done differently than in the nested loop...or 
> something. Don't know, don't know the code base well enough to debug 
> this down to the very bottom either. But it's actually only a CF with 
> 2 cols (AsciiType and IntegerType) and a command in the CLI so not too 
> time-consuming to reproduce.
> >


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