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Posted to user@storm.apache.org by Chengwei Yang <ch...@gmail.com> on 2014/05/12 10:10:08 UTC
If supervisor fail and will not be restarted
Hi List,
I see the storm fault-tolerance page said that the storm supervisor is
stateless and so as it can be just restarted after fail.
I'm wondering if the fail supervisor will not be restarted, what will
happening? Is the only side-effect is that the nimbus can not ask the
*failed* supervisor to start worker anymore, so some kind of wast of
resource, is this true? Does it hurt current running worker?
--
Thanks,
Chengwei
Re: If supervisor fail and will not be restarted
Posted by Chengwei Yang <ch...@gmail.com>.
On Mon, May 12, 2014 at 05:25:32PM +0530, Srinath C wrote:
> The current running workers will not get affected but if any of the worker
> processes crash, they will not get relaunched - basically the topology will
> remain disfunctional until the supervisor is started again and it re-spawns the
> worker process.
Yeah, thanks, the situation I suppose is the worker alive, but the
supervisor died, so there is no need to re-launch worker process[es].
What will be hurt if I left the supervisor dead?
--
Thanks,
Chengwei
>
>
> On Mon, May 12, 2014 at 1:40 PM, Chengwei Yang <ch...@gmail.com>
> wrote:
>
> Hi List,
>
> I see the storm fault-tolerance page said that the storm supervisor is
> stateless and so as it can be just restarted after fail.
>
> I'm wondering if the fail supervisor will not be restarted, what will
> happening? Is the only side-effect is that the nimbus can not ask the
> *failed* supervisor to start worker anymore, so some kind of wast of
> resource, is this true? Does it hurt current running worker?
>
> --
> Thanks,
> Chengwei
>
>
Re: If supervisor fail and will not be restarted
Posted by Srinath C <sr...@gmail.com>.
The current running workers will not get affected but if any of the worker
processes crash, they will not get relaunched - basically the topology will
remain disfunctional until the supervisor is started again and it re-spawns
the worker process.
On Mon, May 12, 2014 at 1:40 PM, Chengwei Yang
<ch...@gmail.com>wrote:
> Hi List,
>
> I see the storm fault-tolerance page said that the storm supervisor is
> stateless and so as it can be just restarted after fail.
>
> I'm wondering if the fail supervisor will not be restarted, what will
> happening? Is the only side-effect is that the nimbus can not ask the
> *failed* supervisor to start worker anymore, so some kind of wast of
> resource, is this true? Does it hurt current running worker?
>
> --
> Thanks,
> Chengwei
>