Re: how to dismiss a ignite server node.

[Вячеслав Коптилин <sl...@gmail.com>]

Hello,

If you don't have configured 3rd party cache store or backups,
then there is only one possible way, I think.
You need to
 - store all the data from the node you want to shut down,
 - shut down the node
 - upload stored data back to the cluster.

It can be done via an external database, for example.
If the data set is not huge, you can try to use a new partitioned cache
(with node filter/backups) or replicated cache.

Thanks.

2018-02-23 10:00 GMT+03:00 shawn.du <sh...@neulion.com.cn>:

> Hi,
> Suppose I have several ignite server nodes which compose a cluster.
> all data in PARTITIONED mode, and with no backups.
> It is possible to dismiss a node without restarting and data lose?
> if possible, what are the steps?
>
> Thanks
> Shawn
>
>

Re: how to dismiss a ignite server node.

["slava.koptilin" <sl...@gmail.com>]

Hi Shawn,

Perhaps, it will be a good idea to propose this feature on dev-list to see
what dev community thinks.

Best regards,
Slava.



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Re: how to dismiss a ignite server node.

[David Harvey <dh...@jobcase.com>]

ElasticSearch has this feature (where you exclude a node) and we use it all
the time in production.

For example, if AWS has planned maintenance on instance with local SSDs, we
want to add a new node, and remove the old node, without a temporary
decrease in the number  of backups.   If you are running with one backup,
your choices are to add another backup for all partitions, or stop a node
and run with no backups for some period of time.   Neither is attractive.
 I want to add a new node, and to remove all data from the old node,
without loosing protection.

-DH

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Re: how to dismiss a ignite server node.

[vkulichenko <va...@gmail.com>]

Shawn,

I doubt this feature makes much sense as it doesn't really add value. If you
need to avoid data loss, using backups (and sometimes persistence) is a
must, and with backups you can easily achieve functionality you're
describing.

-Val



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