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Posted to user@ignite.apache.org by John Wilson <sa...@gmail.com> on 2017/10/03 22:22:07 UTC

Atomicity Mode and WAL

Hi,

What is the purpose and difference in the use of the WAL in atomic mode vs.
in transaction mode?

Thanks

Re: Atomicity Mode and WAL

Posted by Konstantin Dudkov <kd...@ya.ru>.

Hi John,

"The purpose of the WAL is to propagate updates to disk in the fastest 
way possible and provide a recovery mechanism for scenarios where a 
single node or the whole cluster goes down."

see, 
https://apacheignite.readme.io/docs/distributed-persistent-store#section-write-ahead-log

WAL operates with page memory, so there is no difference between cache 
modes and settings.

04/10/2017 01:22, John Wilson пишет:
> Hi,
> 
> What is the purpose and difference in the use of the WAL in atomic mode 
> vs. in transaction mode?
> 
> Thanks

-- 
Regards, Konstantin.