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Posted to user@hbase.apache.org by gomes <sa...@gmail.com> on 2014/07/13 23:54:35 UTC
Is there an advantage of placing related regions on the same region
server/host?
I have few tables, and I have pre partitioned the tables. I would like to
achieve reduced latency. I am just thinking of placing related regions on
the same region server/host. For example, table 1 contains 3 regions
[a,b,c], and table 2 contains 3 regions[x,y,z]. (a,x) contains the data for
some group of users, (b,y) contains the data for some group of users, and
(c,z) and so on.
If I have two region servers, instead of placing [a,b,c] on one server, and
[x,y,z] on other server, is there an advantage of placing related regions
(a,x), (b,y), (c,z) among the region servers?
Note: I also make sure the regions will not be divided further, or there
will be manual intervention needed to divide the regions further.
--
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Re: Is there an advantage of placing related regions on the same
region server/host?
Posted by Esteban Gutierrez <es...@cloudera.com>.
Hello gomes,
Sounds like you are looking for the functionality described by HBASE-10576,
I the meantime if both table share the same keys it might be easier to
merge the tables using different CFs. Would that work for you?
cheers,
esteban.
--
Cloudera, Inc.
On Sun, Jul 13, 2014 at 7:50 PM, Ted Yu <yu...@gmail.com> wrote:
> The co-location of regions from two tables would benefit your query if you
> utilize server side processing, through coprocessors.
> This way, client requests to regions a and x, e.g., can be combined.
>
> Cheers
>
>
> On Sun, Jul 13, 2014 at 6:25 PM, gomes <sa...@gmail.com> wrote:
>
> > Yes.
> >
> >
> >
> > --
> > View this message in context:
> >
> http://apache-hbase.679495.n3.nabble.com/Is-there-an-advantage-of-placing-related-regions-on-the-same-region-server-host-tp4061296p4061299.html
> > Sent from the HBase User mailing list archive at Nabble.com.
> >
>
Re: Is there an advantage of placing related regions on the same
region server/host?
Posted by Ted Yu <yu...@gmail.com>.
The co-location of regions from two tables would benefit your query if you
utilize server side processing, through coprocessors.
This way, client requests to regions a and x, e.g., can be combined.
Cheers
On Sun, Jul 13, 2014 at 6:25 PM, gomes <sa...@gmail.com> wrote:
> Yes.
>
>
>
> --
> View this message in context:
> http://apache-hbase.679495.n3.nabble.com/Is-there-an-advantage-of-placing-related-regions-on-the-same-region-server-host-tp4061296p4061299.html
> Sent from the HBase User mailing list archive at Nabble.com.
>
Re: Is there an advantage of placing related regions on the same
region server/host?
Posted by gomes <sa...@gmail.com>.
Yes.
--
View this message in context: http://apache-hbase.679495.n3.nabble.com/Is-there-an-advantage-of-placing-related-regions-on-the-same-region-server-host-tp4061296p4061299.html
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Re: Is there an advantage of placing related regions on the same region server/host?
Posted by Ted Yu <yu...@gmail.com>.
By related regions, do you mean query would typically involve both regions ?
Cheers
On Jul 13, 2014, at 2:54 PM, gomes <sa...@gmail.com> wrote:
> I have few tables, and I have pre partitioned the tables. I would like to
> achieve reduced latency. I am just thinking of placing related regions on
> the same region server/host. For example, table 1 contains 3 regions
> [a,b,c], and table 2 contains 3 regions[x,y,z]. (a,x) contains the data for
> some group of users, (b,y) contains the data for some group of users, and
> (c,z) and so on.
>
> If I have two region servers, instead of placing [a,b,c] on one server, and
> [x,y,z] on other server, is there an advantage of placing related regions
> (a,x), (b,y), (c,z) among the region servers?
>
> Note: I also make sure the regions will not be divided further, or there
> will be manual intervention needed to divide the regions further.
>
>
>
> --
> View this message in context: http://apache-hbase.679495.n3.nabble.com/Is-there-an-advantage-of-placing-related-regions-on-the-same-region-server-host-tp4061296.html
> Sent from the HBase User mailing list archive at Nabble.com.