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From Alexey Kuznetsov <akuznet...@apache.org>
Subject Re: Is it possible to enable both REPLICATED and PARTITIONED?
Date Mon, 10 Oct 2016 16:32:22 GMT

First of all, cache mode and number of backups could be set only once - on
cache start.
So, if you know the size of your cluster you could set number of backups
before cache start.
But, I think it is not reasonable to set number of backups equals to number
of nodes.
If you need 100% high availability, just use replicated cache. But I would
recommend to think about how many nodes at once can be lost?
May be it is reasonable to set backups = 2? The more backups you choose -
the more memory will be consumed by backup partitions and also
grid will spend time in rebalancing data.
What is your use case?

On Mon, Oct 10, 2016 at 11:18 PM, Tracy Liang (BLOOMBERG/ 731 LEX) <
tliang36@bloomberg.net> wrote:

> Thanks, and PARTITIONED mode could have any number of backups right? I
> want backups for high availability and also my dataset is large. I guess I
> will use PARTITIONED mode and configure number of backups based on actual
> needs in that case right?
> From: user@ignite.apache.org
> Subject: Re: Is it possible to enable both REPLICATED and PARTITIONED?
> Hi, Tracyl.
> Actually, REPLICATED cache is a PARTITIONED cache win backups on all nodes.
> But, why did you need  this?
> On Mon, Oct 10, 2016 at 10:46 AM, Tracyl <tliang36@bloomberg.net> wrote:
>> As subject shows.
>> --
>> View this message in context: http://apache-ignite-users.
>> 70518.x6.nabble.com/Is-it-possible-to-enable-both-
>> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
> --
> Alexey Kuznetsov

Alexey Kuznetsov

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