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From Anton Lyska <ant...@wildec.com>
Subject Re: Fastest way to find is a row exist?
Date Fri, 04 Jan 2013 15:32:45 GMT
Hi,

using KeyOnlyFilter will prevent sending value via netrwork

04.01.2013 17:24, Jean-Marc Spaggiari пишет:
> Hi,
>
> What's the fastest way to know if a row exist?
>
> Today I'm doing that:
>
> Get get_entry_exist = new Get(key).addColumn(CF_DATA, C_DATA);
> Result entry_exist = table_entry.get(get_entry_exist);
>
> But should this be faster?
> Get get_entry_exist = new Get(key);
> Result entry_exist = table_entry.get(get_entry_exist);
>
> There is only one CF and one C on my table.
>
> Or is there an even faster way?
>
> Also, is there a way to make that even faster? I think BloomFilters
> can help, right?
>
> Thanks,
>
> JM
>


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