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From Schubert Zhang <zson...@gmail.com>
Subject Re: How to permanently delete one key ?
Date Wed, 28 Apr 2010 09:47:03 GMT
I think even through the real deletion is done when compaction.
The get/get_range_slices should not return the deleted-marked keys (or
columns).

Schubert


On Wed, Apr 28, 2010 at 1:39 PM, Jeff Zhang <zjffdu@gmail.com> wrote:

> Thanks Lu, it's helpful.
>
>
> On Wed, Apr 28, 2010 at 11:42 AM, Greg Lu <greg@openplaces.org> wrote:
> > Hey Jeff,
> > I think this article addresses your
> > question:
> http://spyced.blogspot.com/2010/02/distributed-deletes-in-cassandra.html
> > -Greg
> >
> > On Tue, Apr 27, 2010 at 10:14 PM, Jeff Zhang <zjffdu@gmail.com> wrote:
> >>
> >> Hi all,
> >>
> >> I use the thrift api to remove one key, and then use the
> >> get_range_slices to get all the keys and find that the key which I
> >> deleted is still there. I refer to the thrift api doc which says
> >> get_range_slices will apply to all the keys including the deleted
> >> keys. So my question is how can I delete one key permanently, my guess
> >> is that cassandra won't delete the key at once just mark the deleted
> >> keys. So when will cassandra do the real deletion operation?
> >>
> >>
> >> --
> >> Best Regards
> >>
> >> Jeff Zhang
> >
> >
>
>
>
> --
> Best Regards
>
> Jeff Zhang
>

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