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From Andrey Mashenkov <amashen...@gridgain.com>
Subject Re: Using 3rd party DB together with native persistence (WAS: GettingInvalid state exception when Persistance is enabled.)
Date Mon, 02 Apr 2018 12:51:55 GMT

It is very easy for user to shoot himself in a foot... and they do it again
and again.... e.g. like this one [1].


On Thu, Mar 8, 2018 at 11:28 PM, Dmitriy Setrakyan <dsetrakyan@apache.org>

> To my knowledge, the 2.4 release should have support for both persistence
> mechanisms, native and 3rd party, working together. The release is out for
> a vote already:
> http://apache-ignite-developers.2346864.n4.nabble.
> com/VOTE-Apache-Ignite-2-4-0-RC1-td27687.html
> D.
> On Mon, Feb 26, 2018 at 2:43 AM, Humphrey <hmmlopez@gmail.com> wrote:
>> I think he means when *write-through* and *read-through* modes are
>> enabled on
>> the 3rd party store, data might be written/read to/from one of those
>> persistence storage (not on both).
>> So if you save data "A" it might be stored in the 3rd party persistence,
>> and
>> not in the native. When data "A" is not in the cache it might try to look
>> it
>> up from the native persistence, where it's not available. Same could
>> happen
>> with updates, if "A" was updated to "B" it could have changed in the 3rd
>> party but when requesting for the data again you might in one case get "A"
>> an other case "B" depending on the stores it reads the data from.
>> At least that is what I understand from his consistency between both
>> stores.
>> --
>> Sent from: http://apache-ignite-users.70518.x6.nabble.com/

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