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Posted to user@zookeeper.apache.org by Zili Chen <wa...@gmail.com> on 2019/09/19 14:37:59 UTC
Ephemeral znode deleted infers session expired?
Hi ZooKeepers,
I'd like to know whether an ephemeral znode deleted infers its
corresponding session expired.
The original situation is that when I create a leader latch as
ephemeral sequential znode. When the znode got deleted others possibly
become new leader so that I'd like to forbid any further operations from
the former leader. I'm thinking of achieve this for free if zookeeper
already confirms that the following operations should be failed by
SessionExpiredException.
Best,
tison.
Re: Ephemeral znode deleted infers session expired?
Posted by Zili Chen <wa...@gmail.com>.
Thanks for your answer Michael!
Best,
tison.
Michael Han <ha...@apache.org> 于2019年9月21日周六 上午4:06写道：
> >> I'd like to know whether an ephemeral znode deleted infers its
> corresponding session expired.
>
> Yes as far as I know - assuming no one else was messing up with the same
> ephemeral node.
>
> On Thu, Sep 19, 2019 at 7:39 AM Zili Chen <wa...@gmail.com> wrote:
>
> > Of course it is ensured that no other operations delete this leader latch
> > znode.
> >
> > Best,
> > tison.
> >
> >
> > Zili Chen <wa...@gmail.com> 于2019年9月19日周四 下午10:37写道：
> >
> > > Hi ZooKeepers,
> > >
> > > I'd like to know whether an ephemeral znode deleted infers its
> > > corresponding session expired.
> > >
> > > The original situation is that when I create a leader latch as
> > > ephemeral sequential znode. When the znode got deleted others possibly
> > > become new leader so that I'd like to forbid any further operations
> from
> > > the former leader. I'm thinking of achieve this for free if zookeeper
> > > already confirms that the following operations should be failed by
> > > SessionExpiredException.
> > >
> > > Best,
> > > tison.
> > >
> >
>
Re: Ephemeral znode deleted infers session expired?
Posted by Michael Han <ha...@apache.org>.
>> I'd like to know whether an ephemeral znode deleted infers its
corresponding session expired.
Yes as far as I know - assuming no one else was messing up with the same
ephemeral node.
On Thu, Sep 19, 2019 at 7:39 AM Zili Chen <wa...@gmail.com> wrote:
> Of course it is ensured that no other operations delete this leader latch
> znode.
>
> Best,
> tison.
>
>
> Zili Chen <wa...@gmail.com> 于2019年9月19日周四 下午10:37写道：
>
> > Hi ZooKeepers,
> >
> > I'd like to know whether an ephemeral znode deleted infers its
> > corresponding session expired.
> >
> > The original situation is that when I create a leader latch as
> > ephemeral sequential znode. When the znode got deleted others possibly
> > become new leader so that I'd like to forbid any further operations from
> > the former leader. I'm thinking of achieve this for free if zookeeper
> > already confirms that the following operations should be failed by
> > SessionExpiredException.
> >
> > Best,
> > tison.
> >
>
Re: Ephemeral znode deleted infers session expired?
Posted by Zili Chen <wa...@gmail.com>.
Of course it is ensured that no other operations delete this leader latch
znode.
Best,
tison.
Zili Chen <wa...@gmail.com> 于2019年9月19日周四 下午10:37写道：
> Hi ZooKeepers,
>
> I'd like to know whether an ephemeral znode deleted infers its
> corresponding session expired.
>
> The original situation is that when I create a leader latch as
> ephemeral sequential znode. When the znode got deleted others possibly
> become new leader so that I'd like to forbid any further operations from
> the former leader. I'm thinking of achieve this for free if zookeeper
> already confirms that the following operations should be failed by
> SessionExpiredException.
>
> Best,
> tison.
>