hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Erik Holstad" <erikhols...@gmail.com>
Subject Re: Row with many-many columns
Date Thu, 18 Dec 2008 16:59:42 GMT
Hi!
I'm not totally sure about this, but I think that 1 family is stored in 1
HStore which
consists of multiple HStoreFiles which in their turn consists of mapfiles
and an index file.

Regards Erik

On Wed, Dec 17, 2008 at 8:52 AM, Slava Gorelik <slava.gorelik@gmail.com>wrote:

> Hi.
>
> I think it should be faster, even for the reason that each column family is
> separate map file (correct me if i wrong).It means when you will ask for
> specific column family, HBase will not open other map files.
> Btw, the functionality to get particular column family will be released in
> 0.19 : https://issues.apache.org/jira/browse/HBASE-857
>
>
> Best Regards.
>
>
> On Wed, Dec 17, 2008 at 5:59 PM, Michael Dagaev <michael.dagaev@gmail.com
> >wrote:
>
> > Hi, all
> >
> >    Let there is a row with A, B, and C column families. Let C column
> > family many-many columns (qualifiers). As I understand, retrieve of
> > such a row is slow. What if  I retrieve only A and B columns but not C
> > ? I guess it will be much faster. Is it correct?
> >
> > Thank you for your cooperation,
> > M.
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message