incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Roshan Dawrani <roshandawr...@gmail.com>
Subject Re: The mutations to delete sub-columns can't be batched?
Date Tue, 28 Dec 2010 04:28:37 GMT
Hi,

I think I may have found another oversight on the Hector API.

OrderedRows has a convenient peekLast() method, but it is missing in
OrderedSuperRows.

I am trying to get the rows in a batched manner, and being able to peek at
the last one to make it the start key of the next batch is convenient.

Of-course, I am able to pick the last row in a not-so-convenient way, but
the API should be symmetrical.


On Mon, Dec 27, 2010 at 10:22 PM, Nate McCall <nate@riptano.com> wrote:

> Huh. That appears to be an oversight on our part. I'll add an
> addSubDeletion to the Mutator class in trunk. Thank you for bringing
> this up.
>
> On Sun, Dec 26, 2010 at 10:47 PM, Roshan Dawrani
> <roshandawrani@gmail.com> wrote:
> > There doesn't really seem to be an inherent limitation in batching
> > sub-column deletes.
> >
> > Pelops seem to be doing it -
> >
> http://pelops.googlecode.com/svn/trunk/src/org/wyki/cassandra/pelops/Mutator.java
> > [deleteSubColumn() / deleteSubColumns()]
> >
> > Is it worth an improvement request on Hector?
> >
> > On Mon, Dec 27, 2010 at 10:07 AM, Roshan Dawrani <
> roshandawrani@gmail.com>
> > wrote:
> >>
> >> Which "No"?
> >>
> >> 1) No, it is "not" correct correct that they can't be batched, or
> >>
> >> 1) No, they can't be batched
> >>
> >> :-)
> >>
> >>
> >> On Mon, Dec 27, 2010 at 10:04 AM, Jonathan Ellis <jbellis@gmail.com>
> >> wrote:
> >>>
> >>> On Sun, Dec 26, 2010 at 9:14 AM, Roshan Dawrani <
> roshandawrani@gmail.com>
> >>> wrote:
> >>> > Is it correct that mutations that delete subcolumns of a super column
> >>> > can't
> >>> > be batched - unlike inserts and deletes of normal columns?
> >>>
> >>> No.
> >>>
> >>> --
> >>> Jonathan Ellis
> >>> Project Chair, Apache Cassandra
> >>> co-founder of Riptano, the source for professional Cassandra support
> >>> http://riptano.com
> >>
> >>
> >>
> >> --
> >> Roshan
> >> Blog: http://roshandawrani.wordpress.com/
> >> Twitter: @roshandawrani
> >> Skype: roshandawrani
> >>
> >
>



-- 
Roshan
Blog: http://roshandawrani.wordpress.com/
Twitter: @roshandawrani <http://twitter.com/roshandawrani>
Skype: roshandawrani

Mime
View raw message