Dmitriy Pavlov commented on IGNITE-8111:

[~garus.d.g], just wondering, why did you need to change the buffer size?
setWalBufferSize(512 * 1024)

Will tests fail without this change?

Remaining change and tests looks good, so if we can find answers about this 
parameter I would like to merge your changes.

> Add extra validation for WAL segment size
> -----------------------------------------
>                 Key: IGNITE-8111
>                 URL: https://issues.apache.org/jira/browse/IGNITE-8111
>             Project: Ignite
>          Issue Type: Improvement
>    Affects Versions: 2.4
>            Reporter: Ivan Rakov
>            Assignee: Denis Garus
>            Priority: Major
>              Labels: newbie
>             Fix For: 2.6
> Currently we can set extra small DataStorageConfiguration#walSegmentSize (10 
> pages or even less than one page), which will trigger multiple assertion 
> errors in code.
> We have to implement validation on node start that WAL segment size has 
> reasonable value (512KB or more).

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