> The old blocks are deleted via the existing delete path.
I see. Thanks for explaining.



On Wed, Jun 26, 2024 at 7:57 PM Stephen O'Donnell
<sodonn...@cloudera.com.invalid> wrote:

> > Just curious as to what happens to the original key blocks. Do we intend
> to
> clean it up?
>
> The cleanup is the same as when deleting a key, and then writing it again.
> The old blocks are deleted via the existing delete path. If there is a
> snapshot covering the key, the old blocks will be retained as usual.
>
> Overwriting a key in Ozone is effectively the same as a delete and a create
> in a single call. The atomic rewrite change simply blocks the change if the
> key was changed. Otherwise the functionality is unchanged.
>
>
> On Wed, Jun 26, 2024 at 11:34 AM Sadanand Shenoy <sshe...@apache.org>
> wrote:
>
> > Thanks for working on this, I tried out the rewrite CLI with/without
> > modifying the key and it works.
> > +1 for the merge.
> >
> > Just curious as to what happens to the original key blocks. Do we intend
> to
> > clean it up?
> > If the answer is yes, having snapshots can cause trouble here as it would
> > refer to older blocks.
> >
> > On Tue, Jun 25, 2024 at 7:18 PM Stephen O'Donnell
> > <sodonn...@cloudera.com.invalid> wrote:
> >
> > > +1 for the merge from me. Disclaimer - I was involved in the changes on
> > > this branch.
> > >
> > > Thanks,
> > >
> > > Stephen.
> > >
> > > On Tue, Jun 25, 2024 at 1:32 PM Attila Doroszlai <
> adorosz...@apache.org>
> > > wrote:
> > >
> > > > Hi Ozone developers,
> > > >
> > > > I would like to propose merging into master the feature branch
> > > > HDDS-10656-atomic-key-overwrite, which was used to develop Atomic Key
> > > > Overwrite.
> > > >
> > > > There are scenarios where it would be desirable to replace a key in
> > > > Ozone, but only if the key has not changed since it was read.  The
> > > > commits in the branch implement a minimal change to allow this
> feature
> > > > in the Ozone API.
> > > >
> > > > Checklist for feature branch merge:
> > > >
> > > >
> > >
> >
> https://cwiki.apache.org/confluence/display/OZONE/Atomic+Key+Overwrite+and+Key+Replacement+-+HDDS-10656
> > > >
> > > > This vote will be open for at least a week.
> > > >
> > > > thanks,
> > > > Attila
> > > >
> > > > ---------------------------------------------------------------------
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> > > > For additional commands, e-mail: dev-h...@ozone.apache.org
> > > >
> > > >
> > >
> >
>

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